65results about How to "Reduce the degree of occurrence" patented technology

The invention discloses an organic cultivation method based on rotation of autumn melons, vegetable broad beans, rice and water chestnuts, and relates to the technical field of rotation cropping. The organic cultivation method includes the following steps: (1), establishing an organic cultivation production base; (2), cultivating according to a rotation method; (3), cultivating organic melons, organic vegetable broad beans, organic rice (planting one batch of early-season rice in the first year and the second year of a rotation cycle) and organic water chestnuts according to quality requirements and production technology standards of organic agricultural products, and fertilizing soil by straw turnover and organic fertilizer preparation. The rotation method includes sequentially cultivating the early-season rice, the autumn melons and the vegetable broad beans at the first year, and sequentially cultivating the early-season rice and the water chestnuts at the second year, wherein every two years serve as a rotation cycle. The organic cultivation method has the advantages that the organic melons, the organic vegetable broad beans, the water chestnuts and the organic rice can be cultivated in the same cultivation production base, a high-efficiency ecological circular agriculture cultivation mode, high practicability and operability and high social, economic and ecological benefits are achieved, and the method has a broad promotion and application prospect in the middle and lower reaches of Yangtze River.

The invention relates to a dripping arrow irrigation automatic control system, a manufacturing method of the dripping arrow irrigation automatic control system and a dripping arrow irrigation method. The dripping arrow irrigation automatic control system consists of a reservoir, a water pump, a water level sensor, a conveying main pipeline, a fertilization pipeline, a conveying branch pipeline, a temperature sensor, a main controller, a start controller, a water taking pressure gauge, an electromagnetic valve, a suction and exhaust valve, a fertilization control valve, a filter and a water conveying pressure gauge; the reservoir is arranged at the initial end of the conveying main pipeline; the water level sensor is arranged in the reservoir; the water level sensor is connected with the main controller; the water pump is arranged on the reservoir and is used for drawing a water source in the reservoir; the water taking pressure gauge, the electromagnetic valve, the suction and exhaust valve, the fertilization control valve, the filter and the water conveying pressure gauge are sequentially arranged on the initial section of the conveying main pipeline; the fertilization control valve is mounted on the initial section of the conveying main pipeline; a fertilizer is uniformly conveyed into the conveying main pipeline by the fertilization conveying pipeline. The dripping arrow irrigation automatic control system is scientifically designed, has a reasonable structure and uniform flow, is reasonable in system arrangement, is stable in pressure in the pipelines, has wide applicability and has a wide application range; a dripping arrow takes effects of a water dropper and an insertion arrow, has a small size and high intensity, has powerful use functionality and is convenient to mount and use.

The invention provides a mixture for controlling soil-borne diseases of tobaccos, and a using method of the mixture. The mixture mainly contains the following components: 5-15 parts of rhodiola root extract, 10-20 parts of marigold root extract, 15-35 parts of coptidis rhizome root extract and 50 parts of 95% alcohol. The using method of the mixture comprises the following steps: (1) before the tobaccos are sown, preparing the mixture and water into a solution according to the ratio of 1: 10, evenly spraying the solution to a seedling substrate, wherein 0.1-0.15L of solution is sprayed to every kilogram of substrate, and evenly mixing; after that, normally sowing, and transplanting into a big field after tobacco seedlings grow up to a standard; (2) when the tobaccos are transplanted into the big field, preparing the mixture and water into a solution according to the ratio of 1: (400-600), and filling the solution into seedling holes used for transplanting the tobacco seedlings, wherein each seedling hole is filled with 40-60ml of solution. The mixture has the characteristics of being wide in sterilization range, lasting in effect, non-toxic, safe and the like; after the mixture is adopted, the occurrence rate of the soil-borne diseases of the tobaccos is obviously reduced, and the quality of the tobaccos can be improved.

The invention discloses an organic cultivation and rotation method for watermelons, rice and water chestnuts in spring and summer and relates to the technical field of rotation cropping.The method comprises the steps that 1, an organic cultivation production base is built; 2, cultivation is performed in the following rotation pattern: watermelons, late rice and astragalus smicus are sequentially cultivated in spring and summer in the first year, early rice and water chestnuts are sequentially cultivated in the second year, and two years is a rotation cycle; 3, according to the quality requirements on organic agricultural products and production technological specifications, organic watermelons, organic rice (late rice and early rice) and organic water chestnuts are cultivated, and soil fertilization is realized by means of straw turnover and wet composting of organic fertilizer and planting green manure.Through the organic cultivation and rotation method, cultivation of organic watermelons, organic water chestnuts and organic rice can be carried out in the same organic cultivation production base, the method is an efficient, ecological and cyclic agricultural cultivation method, and the method is scientific and reasonable in technology, high in practicability and operability and suitable for large-scale organic cultivation and has a broad application and popularization prospect in the middle and lower reaches of Yangtze River.

This aims to provide a pipe-slide type mechanical pencil capable of confining the protrusion of a writing lead from a tip pipe, within a predetermined range. The mechanical pencil comprises a rotary drive mechanism constituted to let off a writing lead (10) forward by the forward and backward movements of a chuck (3) arranged in a cylinder (1) thereby to release and grip the writing lead, and to turn a rotor (5) in one direction in response to both the backward motion by a writing pressure received by the writing lead and the forward motion by the release of the writing pressure. Further comprised are a pipe supporting member (8) accommodated in a tip unit (1A) forming the tip of the cylinder, for supporting a tip pipe (7), and a backward drive mechanism for moving back the tip pipe supported by the pipe supporting member, gradually toward the cylinder in response to the rotary drive action of the rotor constituting the rotary drive mechanism.

The invention relates to the technical field of engineering, such as transportation, water conservancy, mines and the like, and provides an anti-rockburst supporting method in tunnel and an anti-rockburst supporting system in tunnel. The anti-rockburst supporting method in tunnel comprises the following steps: forming a shotcrete layer, which has a plurality of grooves, on the surface of a tunnel of surrounding rock; inserting a plurality of prestressed energy-releasing anchor rods in a radial direction of the surrounding rock; controlling the prestressed energy-releasing anchor rods to actively support the surrounding rock, wherein the prestressed energy-releasing anchor rods sideslip and move for a certain distance according to the anti-rockburst needs when the stress of the rod bodys of prestressed energy-releasing anchor rods reaches a preset stress value. The anti-rockburst supporting method in tunnel is scientific and reasonable, can effectively prevent or reduce the occurrence of a rock burst. The anti-rockburst supporting system in tunnel comprises the surrounding rock, the shotcrete layer and a plurality of prestressed energy-releasing anchor rods, a plurality of grooves are formed in the shotcrete layer at intervals, one end of each prestressed energy-releasing anchor rod is embedded in the surrounding rock in the radial direction of the surrounding rock, the other end of each prestressed energy-releasing anchor rod is located at the shotcrete layer. The supporting system can ensure the stability and safety of the tunnel under the condition of rock burst.

The invention discloses a crop rotation organic cultivation method for summer and autumn watermelons, vegetable broad beans, rice and chufas and relates to the technical field of crop rotation cultivation.The method comprises the first step of establishing an organic cultivation production base, the second step of conducting cultivation in a crop rotation mode that the rice, the summer and autumn watermelons and the vegetable broad beans are sequentially cultivated in the first year, the rice and the chufas are sequentially cultivated in the second year, and one crop rotation period is two years, the third step of conducting crop rotation cultivation of organic watermelons, organic vegetable broad beans, organic rice (the rice is cultivated two times in the first year and in the second year within one crop rotation period respectively) and organic chufas according to the quality requirements for organic agricultural products and production technical specifications and fertilizing soil through straw returning application and organic fertilizer composting.By means of the organic cultivation method, cultivation of the organic watermelons, the organic vegetable broad beans, the organic chufas and the organic rice can be achieved in the same organic cultivation production base, practicality and operability are high, very good social, economic and ecological benefits are achieved, and the method has wide application and popularization prospects in the middle and lower Yangtze River.

The invention discloses an organic cultivation and rotation method for muskmelons, rice and water chestnuts in spring and summer and relates to the technical field of rotation cropping.The method comprises the steps that 1, an organic cultivation production base is built; 2, cultivation is performed in the following rotation pattern: muskmelons, late rice and astragalus smicus are sequentially cultivated in spring and summer in the first year, early rice and water chestnuts are sequentially cultivated in the second year, and two years is a rotation cycle; 3, according to the quality requirements on organic agricultural products and production technological specifications, organic muskmelons, organic rice (late rice and early rice) and organic water chestnuts are cultivated, and soil fertilization is realized by means of straw turnover and wet composting of organic fertilizer and planting green manure.Through the organic cultivation and rotation method, cultivation of organic muskmelons, organic water chestnuts and organic rice can be realized in the same organic cultivation production base, and the method is scientific and reasonable in technology, easy to implement, high in practicability and operability and suitable for large-scale organic cultivation and has a broad application and popularization prospect in the middle and lower reaches of Yangtze River.

An image forming apparatus includes a first image forming portion including a first photosensitive member (drum), a first charging device, a first exposure device, a first developing device, and a first transfer device; a second image forming portion including a second drum, and a second charging device, a second exposure device, a second developing device, and a second transfer device; a power source for applying a common voltage to the first transfer device and the second transfer device; and a setting device for variably setting, for a period in which the transfer operation is performed, potentials of the exposed portions of the first and second drums on the basis of currents passing through the first and second transfer devices, respectively, when the common voltage is applied to the first and second transfer devices in a period other than the period in which the transfer operation is performed.

The invention relates to a nutrition supplementation forage and a preparation method thereof for cows in lactation peak period. The nutrition supplementation forage for cows in the lactation peak period is prepared from the following raw materials in parts by weight: 4-13 parts of puffed corn, 6-14 parts of yeast culture, 3-15 parts of corn gluten meal, 5-50 parts of extruded soybean,10-60 parts of fractionation saturated fat,10-20 parts of potassium chloride, 0.44-1.94 parts of rumen bypass choline and 0.06 parts of antioxidant. According to the nutrition supplementation forage and the preparation method, through strict selection of the raw materials and reasonable formula design, the match proportion of the nutrition and energy is balanced. Therefore, nutrient concentration of the forage can be rapidly increased; energy that is scarce in the cows can be supplemented; the rumen digestion rate is strengthened; the organism fat metabolism is promoted; the nutrition supplementation forage and a preparation method enable the milking cows to rapidly increase milk production, increase body condition and avoid the ketosis and abomasum displacement.

The invention discloses a straw granule boiler, which not only can use a wood type biomass granule fuel in a controllable state but also can use a straw type biomass granule fuel in the controllable state. The straw granule boiler comprises a furnace body, wherein a controller system is arranged on the front surface of the left part of the furnace body; a combustion chamber and an air supply system are designed on the left side of the front part of the furnace body; the air supply system comprises an air supply heating chamber; a furnace body material box is designed on the right side of the front part of the furnace body; a biomass granule burner is arranged on the lower part of the front side of the furnace body, and is connected with the furnace body through a flange; an induced draught system is designed on the back side of the furnace body; the lower end of the furnace body material box is connected with a material pipe through a feeding device; the upper part on the left side ofthe biomass granule burner is a combustion chamber I; a combustion chamber II is designed above the left part of the biomass granule burner; the induced draught system comprises a settling chamber I,a settling chamber II, a settling chamber III and a settling chamber IV; an induced draught fan is arranged on the back part of the settling chamber IV; and the induced draught fan is positioned outside the furnace body.

The invention discloses a method for organically cultivating muskmelons, paddy rice, vegetable broad beans and water chestnuts in a crop rotation manner, and relates to the technical field of crop rotation cultivation. The method includes steps of (1), building organic cultivation production bases; (2), cultivating the muskmelons, the paddy rice, the vegetable broad beans and the water chestnuts in crop rotation modes, to be more specific, sequentially cultivating the muskmelons, the late rice and the vegetable broad beans in a first year, and sequentially cultivating the early rice and the water chestnuts in a second year; (3), cultivating the organic muskmelons, the organic paddy rice (the late rice and the early rice), the organic vegetable broad beans and the organic water chestnuts according to quality requirements on organic agricultural products and production technical specifications and fertilizing soil by means of returning straw to fields and composting organic fertilizers. A crop rotation period includes two years. The method for organically cultivating the muskmelons, the paddy rice, the vegetable broad beans and the water chestnuts in the crop rotation manner has the advantages that the organic muskmelons, the organic paddy rice, the organic vegetable broad beans and the organic water chestnuts can be cultivated in the same organic cultivation production bases, and the method is scientific and reasonable in technology and high in practicality and operability and has a good economic benefit and a popularization application prospect in the middle and lower reaches of the Yangtze River.

The invention discloses a paddy-upland rotation organic cultivating method for spring and summer hot peppers, relating to the technical field of rotation cultivation. The paddy-upland rotation organic cultivating method comprises the following steps: (1) establishing an organic cultivation production base; (2) selecting proper hot pepper species; (3) cultivating by adopting the following rotation mode: in first year, sequentially cultivating: spring and summer hot peppers, late rice and vegetable broad beans, in second year, sequentially cultivating: early rice and water chestnut, wherein one rotation period is conducted every 2 years; (4) cultivating organic hot peppers, organic paddy rice (late rice and early rice), organic vegetable broad beans and organic water chestnuts according to the quality requirement and production specification of organic agricultural products, and performing straw returning to the field and wet-composting organic fertilizer to fertilize soil. By adopting the paddy-upland rotation organic cultivating method, not only can organic hot peppers be produced in the same production base, but also the organic paddy rice, organic vegetable broad beans and organic water chestnuts can be produced, so that the practicability and operability are strong, the economic benefits are good, and the paddy-upland rotation organic cultivating method can be popularized and applied in the middle and lower reaches of Yangtze river, and is a scientific and high-efficiency ecological cycle agricultural cultivation method.

The invention belongs to the technical field of cabbage cultivation and concretely relates to a cultivation method of utilizing buckwheat to prevent cabbage clubroot. The technical problem to be solved by the invention is to provide a new choice for cabbage clubroot. The technical scheme of the invention is that a cultivation method of utilizing buckwheat to prevent cabbage clubroot. The cultivation method comprises steps of intercropping or conducting crop rotation between buckwheat and cabbage, first sowing buckwheat in drills in the center of a plantation bed during intercropping and fixedly-planting cabbages on two sides of the buckwheat 30 to 40 hours later, conducting buckwheat to be preceding crop for the cabbage, regularly cultivating buckwheat and then planting cabbage after harvesting buckwheat. Intercropping and rotation crops are buckwheat, which has great prevention effect on crop clubroot and full rot diseases; and compared with traditional chemical pesticides, the cultivation method of utilizing buckwheat to prevent cabbage clubroot is characterized by being safe, free of pesticide residuals and free of pollution to environment.

The invention relates to a benzovindiflupyr-containing compound synergistic bactericidal composition and application thereof. The pesticidal composition comprises benzovindiflupyr and an active component B as active components, wherein the active component B comprises one of a methoxy acrylate bactericide, a sterol synthesis inhibitor and a biogenic bactericide. The pesticidal composition is applied to control of major diseases of fruits and vegetables, has good quick-acting and long-lasting properties, has a novel acting mechanism and many sites, can effectively delay occurrence and development of the pesticide resistance of pathogenic bacteria, and not only has a disease protection effect, but also has a good therapeutic effect. Compared with a single preparation, the compound synergistic composition has the advantages as follows: the dosage is significantly reduced, and pollution of the pesticide to the fruits and the environment is effectively reduced.

The invention discloses an organic cultivation method for crop rotation of eggplant, rice, broad bean and water chestnut, and relates to the technical field of crop rotation cultivation. The organic cultivation method comprises the following steps of (1) building an organic cultivation production base; (2) selecting proper varieties; (3) cultivating by the following crop rotation mode, namely that sequential cultivation in the first year: eggplant, late rice and vegetable broad bean in spring and summer crop; sequential cultivation in the second year: early rice and water chestnut, wherein every two years are used as one crop rotation cycle; (4) cultivating the organic eggplant, organic rice, organic vegetable broad bean and organic water chestnut according to the quality requirements of organic agricultural products and production technique specification, and fertilizing soil through straw field return and retting of organic fertilizer. The organic cultivation method has the advantages that the organic eggplant, organic rice, organic vegetable broad bean and organic water chestnut can be produced in the same production base; the practicality and operability are strong; the method is a scientific high-efficiency ecological circulation agricultural cultivation method, and can be popularized and applied to the middle and lower reaches of the Yangtze River.

The invention discloses a rotation organic cultivation method for over-summer c over-summer capsicum annuum L., vegetable vicia faba, early oryza sativa and eleocharis dulcis, and relates to the technical field of rotation cultivation. The rotation organic cultivation method comprises the following steps: (1) building an organic cultivation production base; (2) selecting proper varieties; (3) implementing a rotation mode: cultivating the over-summer capsicum capsicum annuum L. and the vegetable vicia faba in sequence in a first year, and cultivating the early early oryza sativa and the eleocharis dulcis in sequence in a second year, wherein one rotation period lasts for 2 years; (4) rotationally cultivating organic capsicum annuum L., organic vegetable vicia faba, organic early oryza sativa and organic eleocharis dulcis according to the quality requirements and production technical specifications of organic agricultural products, and fertilizing through straw turnover and wet composting of organic fertilizers. The rotation organic cultivation method has the advantages of very good social, economic and ecological benefits, high practicability and high operability, and can be popularized and applied to middle and lower reaches of the Yangtze river.

The invention discloses a paddy-upland rotation organic cultivation method of summer and autumn hot pepper, and relates to the technical field of rotation cultivation. The paddy-upland rotation organic cultivation method comprises the following steps: (1) selecting an appropriate place to establish an organic cultivation and production base; (2) selecting the early and medium mature hot pepper varieties suitable for local cultivation, including Xiangyan No.3, Xiangyan No.12 and Xiangyan No.13; (3) taking every two years as one rotation cycle, and adopting the following rotation mode for cultivation: sequentially cultivating edamame, summer and autumn hot pepper and vegetable broad bean in the first year; sequentially cultivating early rice and eleocharis dulcis in the second year; (4) performing rotation cultivation of organic hot pepper, vegetable broad bean, early rice, eleocharis dulcis and edamame according to principles of organic agriculture as well as production methods and standards of organic agricultural products; fertilizing soil through returning straws into the field and retting organic fertilizers. The paddy-upland rotation organic cultivation method is an efficient ecological-cycle agricultural cultivation mode, has high practicality and operability as well as good economic, social and ecological benefits, and can be popularized and applied to the middle and lower reaches of Yangtze River.

The invention discloses an organic crop rotation cultivation method for long-season solanum melongena, pisum sativum, early oryza sativa and eleocharis dulcis and relates to the technical field of crop rotation cultivation. The method comprises steps as follows: (1), an appropriate place is selected for establishment of an organic cultivation production base; (2), appropriate varieties of the solanum melongena, the pisum sativum, the early oryza sativa and the eleocharis dulcis are selected; (3), according to a crop rotation mode, the long-season solanum melongena and the pisum sativum are sequentially cultivated in the first year, the early oryza sativa and the eleocharis dulcis are sequentially cultivated in the second year, and every two years is taken as one crop rotation cycle; (4), crop rotation cultivation of organic solanum melongena, organic pisum sativum, organic early oryza sativa and organic eleocharis dulcis is performed according to organic agriculture principles and production modes and standards of organic agricultural products, and soil fertility is improved through straw application and wet composting of organic fertilizer. The organic crop rotation cultivation method is high in practicability and operability, can be popularized and applied to the middle and lower reaches of the Yangtze River, has good economic, social and ecological benefits and is an efficient cultivation mode of ecological and circulatory agriculture.

The invention relates to a method for preventing and treating diseases and pests of a capsicum plant through root dipping in a mixed chemical agent in a field. The method comprises the following steps: (1) mixing a dimethomorph water-based pesticide preparation, an imidacloprid water-based pesticide preparation and water so as to obtain a chemical liquid, wherein the mass ratio of dimethomorph in the dimethomorph water-based pesticide preparation to imidacloprid in the imidacloprid water-based pesticide preparation to water is (5-6): (1-1.5): 10000, and injecting the chemical liquid into a chemical use pool for subsequent usage; and (2) soaking the whole root system of a seedling or a seedling plug into the chemical use pool and carrying out root dipping, allowing the chemical liquid to be fully attached on the root system of the seedling, after root dipping is completed, taking the seedling out of the chemical liquid, and carrying out conventional field planting. According to the invention, through mixing of a pesticide and a bactericide and root dipping, diseases and pests of the capsicum plant in a seedling stage can be prevented and treated for one time; meanwhile, the occurrence degree of diseases and pests of the capsicum plant in an adult-plant stage can be reduced; advanced prevention and treatment of diseases and pests are realized; the usage amount of the pesticide in the adult-plant stage is reduced; and the purposes of reducing the usage amount of the pesticide and saving expense and increasing income for farmers are realized.

The invention discloses an organic cultivation method adopting paddy-upland rotation for long-season Capsicum annuum and relates to the technical field of rotation cropping. The method comprises the following steps: (1) an organic cultivation and production base is established at a properly selected place; (2) middle-late maturing Capsicum annuum varieties including Xiangyan No.3, Xiangyan No.13, Xiangyan No.5, Xiangyan No.15, Xiangyan No.6 and Xiangyan No.16 are selected; (3) according to a rotation mode, the long-season Capsicum annuum and Pisum sativum are cultivated sequentially in the first year, early Oryza sativa and Eleocharis dulcis are cultivated sequentially in the second year, and every two years are taken as one rotation cycle; (4) rotation cropping of organic Capsicum annuum, organic Pisum sativum, organic early Oryza sativa and organic Eleocharis dulcis is performed according to the principle of organic agriculture as well as the production mode and standard of organic agricultural products, and soil is fertilized through retuning of straw to the field and retting. The organic cultivation method adopting paddy-upland rotation has high practicability and operability, can be popularized and applied in the middle and lower reaches of Yangtze River, has good economic, social and ecological benefits and is an efficient ecological and circulatory agricultural cultivation mode.

The invention provides a biomass straw pellet combustor which can not only combust wood biomass pellet fuels under a controllable state, but also can combust straw biomass pellet fuels under a controllable state. The biomass straw pellet combustor comprises a furnace arch, wherein the right end of the furnace arch is fixedly connected with a combustor feed box, the left end of the furnace arch isfixedly connected with an ash box, a drying box is fixedly connected with the combustor feed box, the upper end of the drying box is connected with a feed inlet, the upper surface of the combustor feed box is connected with an air inlet hole, the back surface of the combustor feed box is provided with an ignition hole, the upper part at the front surface of the furnace arch is provided with a fire-watching hole, the lower part of the furnace arch is designed with an ash removal door, the inner surfaces of the front and back of the inner shell of the furnace arch are connected with radiant panels, the upper part of the inner shell of the furnace arch is provided with a secondary air hole, the lower surface of the outer shell of the furnace arch is fixedly connected with a pulley, the lowersurface of the outer shell of the furnace arch is also fixedly connected with a pulley and an air chamber partition plate, the inner shell of the furnace arch and the lower part of the combustor feedbox are designed with reciprocating static grates, the right end of the connecting rod of each grate is connected with a grate speed reduction motor with an adjustment wheel, and the upper surface ofthe furnace arch is provided with a fire-accumulated hole.

The invention discloses an organic crop rotation cultivating method for autumn-crop hot chilies, broad beans, early rice and water chestnuts, and relates to the technical field of crop rotation cultivating. The method comprises the following steps that 1, an organic cultivating production base is built by selecting an appropriate place; 2, appropriate varieties are selected; 3, cultivating is conducted in the crop rotation mode that the early rice, the autumn-crop chilies and the vegetable broad beans are sequentially cultivated in the first year, and the early rice and the water chestnuts are sequentially cultivated in the second year, wherein one crop rotation cycle is two years; 4, crop rotation cultivating of the organic chilies, the vegetable broad beans, the early rice (one crop of the early rice is cultivated in the first year and the second year in one crop rotating cycle separately) and the water chestnuts is conducted according to the quality requirements and the production technology standard of organic agricultural products, and soil is fertilized through straw returning and organic fertilizer composting. The organic crop rotation cultivating method is high in practicability and operability, can be applied and popularized in the middle and lower reaches of Yangtze river and has very good social, economic and ecological benefits.

The invention provides an overflow type hydraulic balance valve with a vibration damping function. The overflow type hydraulic balance valve with the vibration damping function comprises a valve body,wherein a main valve element is slidably arranged in the valve body in a penetrating way; a one-way valve element is slidably arranged in the center of the main valve element in a penetrating way; agap adjusting rod is arranged on the valve body; a gap with adjustable size is arranged between the gap adjusting rod and the one-way valve element; and a control valve element is slidably arranged atone end, far away from an oil inlet cavity, of the valve body in a sleeving way. According to the overflow type hydraulic balance valve with the vibration damping function provided by the invention,under the specific working conditions, through adjusting pretightening forces of two springs, the displacement of the control valve element generated under the oil liquid pressure action of a controloil cavity is larger than the displacement of the main valve element generated under the oil liquid pressure action of the oil inlet cavity, and the opening amount of a balance valve after improvementis promoted to be smaller than the opening amount of a balance valve before improvement, so that the occurrence of the phenomenon of 'nod' is alleviated. Before the gap between the gap adjusting rodand the one-way valve element becomes zero, the one-way valve element and the main valve element do not move relatively, and a valve port of the balance valve cannot be opened, so that the occurrenceof the phenomenon that the system is randomly disturbed instantly so as to enable a load to lose a stationary state is avoided, and the occurrence of a system vibration phenomenon is reduced.

The invention discloses a grape tree form suitable for a simple single-span arched shed and a construction method. The grape tree form is provided with a vertical trunk, wherein a first main vine anda second main vine which reversely extend in the length direction of a ridge are cultivated at the upper end of the grape tree form; a third main vine perpendicular to the main vine is cultivated at the positions, close to the vertical trunk, of the first main vine or the second main vine, wherein the third main vine obliquely extends upwards and then horizontally extends in the width direction ofridges; first fruiting branches are cultivated on the two sides of the first main vine and the two sides of the second main vine at intervals, and V-shaped leaf curtains are cultivated on the two sides of the first fruiting branches through stay wires; and second fruiting branches are cultivated on the two sides of the third main vine at intervals, and the second fruiting branches on the two sides reversely and horizontally extend and are cultivated on a flat canopy frame in the length direction of the ridge to form a horizontal leaf curtain. The frame is concise in shape, formed in one year,suitable for medium and short slight pruned grape varieties; and by virtue of the V-shaped leaf curtains and horizontal leaf curtains, the tree from is high in photosynthetic utilization rate, good in ventilation and light transmission, convenient to operate mechanically, capable of achieving spatial three-dimensional distribution of fruiting parts and capable of enhancing the sightseeing and picking experience feeling.

The invention discloses an organic culture method for crop rotation of autumn pepper, pea, early season rice, water chestnut and green soy bean, and relates to the technical field of crop rotation culture. The method comprises the following steps of (1) selecting a proper place to build an organic culture production base; (2) selecting the proper variety; (3) using a crop rotation mode shown as follows: sequentially culturing green soy bean, autumn pepper and pea in the first year, sequentially culturing early season rice and water chestnut in the second year, and using every two years as one crop rotation period; (4) performing crop rotation culture of organic pepper, organic pea, organic early season rice, organic water chestnut and organic green soy bean according to an organic agriculture principle and organic farm product production mode and standards; fertilizing soil through straw field return and organic fertilizer compost. The organic culture method for crop rotation has the advantages that the practicability and the operability are high; the mode belongs to an efficient ecological cycle agricultural culture mode; the method can be popularized and applied to the middle and lower reaches of Yangtze River, and has good economic, social and ecological benefits.

The invention discloses a method for improving the emergence rate and yield of no-tillage direct seeding oilseed rape, and belongs to the technical field of no-tillage direct seeding of rice stubble oilseed rape. The method includes the steps that fore-rotating rice is subjected to wide-row narrow-space planting, wherein the line spacing is 25-30 cm, operation rows with the width of 40 cm are reserved every 3-4 m, and meanwhile, the operation rows can serve as drainage ditches for later-rotating oilseed rape fields; when rice is harvested, the height of rice stubbles is kept between 20 cm and25 cm, the thickness of straw in the rice field is about 1 cm, and redundant straw is removed from the rice field; no-tillage rice stubble inter-row planting is conducted in the rice field, 150-200 gof oilseed rape seeds are sown in each mu of field, and ditching and cleaning are conducted when the land is idle. The method improves the emergence rate and seedling rate of direct seeding oilseed rape, the ventilation and light transmitting capacity in the later stage of oilseed rape are improved, the anti-freezing and cold-proof capability of the rice stubble direct seeding oilseed rape is enhanced, and the straw is fully utilized.

The invention discloses an organic cultivation method for over-summering eggplants through rice field-upland field rotation, relating to the technical fields of rotation cropping cultivation. The organic cultivation method comprises the following steps: (1) establishing an organic cultivation production base; (2) selecting medium-maturing and late-maturing eggplant varieties, including Xiangza 6#, Xiangza 9# and Zheqie 1#, which are suitable for local cultivation and meet the market requirements; (3) carrying out the rotation cropping modes: sequentially cultivating over-summering eggplants and vegetable-use broad beans in the first year, and sequentially cultivating early season rice and water chestnuts in the second year, wherein a rotation cropping period is two years; and (4) carrying out the rotation cropping on organic eggplants, organic vegetable-use broad beans, organic early season rice and organic water chestnuts according to the quality requirement and production technical specification of organic agricultural products, and preparing organic fertilizer fertilized soil by virtue of straw turnover and wet composting. The organic cultivation method has very good social, economic and ecological benefits and strong practicability and maneuverability and can be popularized and applied in the middle and lower reaches of Yangtze River.

An image forming apparatus includes a first image forming portion including a first photosensitive member, a first charging member to electrically charge the first photosensitive member, and a first exposure member to expose to light the charged first photosensitive member to form an electrostatic latent image, and a second image forming portion including a second photosensitive member, a second charging member to electrically charge the second photosensitive member, and a second exposure member to expose to light the charged second photosensitive member to form an electrostatic latent image. In addition, a power source applies a common voltage to a first transfer portion and a second transfer portion, and a setting portion variably sets, for a period in which a transfer operation is performed, a potential of the exposed portion or the charged portion of the first photosensitive member and a potential of the exposed portion or the charged portion of the second photosensitive member on the basis of a plurality of currents passing through the first transfer portion and a plurality of currents passing through the second transfer portion, respectively, when the plurality of common voltages are applied to the first transfer portion and the second transfer portion in a period other than the period in which the transfer operation is performed.