34results about How to "Realize full return to field" patented technology

The invention discloses a double-cropping no-tillage seedling-throwing straw-to-farmland rice high-yield and high-efficiency production method which comprises the following steps of: a, cleaning a ditch and draining in winter, to be specific, ditching to let rice field leakage water go in winter so as to keep no accumulated water on a field surface before seedling throwing of early season rice; b, performing no-tillage planting and management on the early season rice, to be specific, growing seedlings of the early season rice by using a plastic soft tray, throwing the seedlings when the seedlings have 3.5-4.5 leaves, and wetting as well as irrigating the early season rice in the whole process; c, utilizing straws of the early season rice, to be specific, remaining high stubbles while harvesting the early season rice; d, performing no-tillage planting and management on late rice, to be specific, growing seedlings of the late rice by using the plastic soft tray or growing the seedlings in a dry manner without the tray, and adopting an irrigation mode of irrigating shallowly and exposing the field; e, utilizing the straws of the late rice, to be specific, remaining high stubbles while harvesting the late rice. The double-cropping no-tillage seedling-throwing straw-to-farmland rice high-yield and high-efficiency production method solves the problems of great tillage labor intensity, slow nutrient transformation, easy runt seedlings and no growth of the rice, late maturity, low yield and the like of soil gleyization and secondary soil gleyization rice production in south rice areas, is a matured production technology for improving low-yield rice fields in soil gleyization and secondary soil gleyization, and achieves great application and generalization values in the aspects of reducing agricultural production cost, improving soil organic matters, decreasing fertilizer applying amount, increasing rice yield, improving moisture and fertility preservation performances of soil and the like.

The invention discloses an organic fertilizing method of returning all wheat straw to field; a complete ditch system is established for autumn sowing wheat seeds, the wheat is sown by adopting strip or band shaped wide-narrow rows, apart from applying fertilizer in sowing season and seedling period, livestock and poultry manure organic fertilizer is applied to wide lines or empty rows of the wheat field in a plurality of periods; rice straw is turned and buried by combining intertill of the wide lines and the empty rows from winter to shooting stage; wheat stubble is kept 25-30cm when the wheat is mechanically harvested, then the rest wheat straw is buried in the wheat field ditches; the wheat field is irrigated, and paddy rice is planted in the empty rows among the wheat stubble, thus forming a band-shaped layout; only a chemical fertilizer is applied as a base fertilizer used in paddy rice plantation and as a tillering fertilizer, and the other base fertilizer adopts livestock and poultry manure organic fertilizer; when the water supply of the paddy field is cut off for field drainage, the wheat straw buried in the field ditch is taken out and distributed in the wide lines or empty rows of the paddy field, 1-4 days before finishing field drainage and rewatering, the livestock and poultry manure organic fertilizer is applied as a panicle fertilizer in the wide lines or empty rows of the paddy field. The organic fertilizing method of returning all wheat straw to field has the advantages of simple operation, and can effectively realize resource recycling of straw and livestock and poultry manure.

The invention discloses a method of cultivating rice by layer construction and utilization of straw and soil and solves the problems of crop stalk returning, soil aeration and water-fertilizer coupling. The method includes the steps of 1, performing a bed-furrow project on a rice field for the whole year; 2, performing moisture management before each season of crop harvesting; 3, treating stalks of crops of each season; 4, clearing beds and furrows and spreading soil; 5, planting crops; 6, performing field management; 7, harvesting the crops. The method has the advantages that the soil arable layer structure is changed, and a mud layer, a straw layer and a soil layer are formed from top to bottom; the method is good for deeply placing chemical fertilizers and improving availability of the fertilizers; water content of bed soil is decreased, soil aeration is improved, and availability of natural rainfall is improved; the rice field production process is free of tillage, straw burning and field steeping, ecological benefits are significant, operational energy consumption is reduced, haze is decreased, and irrigation water is decreased.

The invention discloses a double-cropping straw-returning farming method for wheat and maize, comprising the following steps: (A), lofting a ridge surface; (B), ploughing a ridge furrow; (C), spreading base fertilizer; (D), sowing the maize; (E), returning the wheat straws to the field; (F), furrow deepening and hilling; (G), cleaning the furrow and covering the seeds; (H), managing the field; (I), burying the straws; and (J), ploughing and planting the wheat. Summer maize is planted in the winter wheat stubbles; the method is free of tillage and holes, and rational in close planting; each ridge is sowed in drill in two rows; the wheat straw is covered between the rows of the maize ridge surface; the maize straw is collected in the ridge furrow, buried and returned to the field; the water and soil is conserved; the environment is protected; fertility is collected and water is stored; the fertility is increased and the soil is improved; the production of wheat and maize is stable and high; in a 5-year period, the ridge furrow moves towards the same direction; the ridge surface at the field edge is irregular; other ridge surfaces are standard so that the ploughing layer of the full field can be 30cm deep; the soil organic matters are largely increased so that the method is a farming method for improving middle / low-production field and providing high-production field; and the economic benefits, the social benefits and the ecological benefits are increased.

The invention discloses a double-cropping rice based ecological ditch cultivation method for triple-cropping winter crops, aiming to solve the problem about crop straw returning to field, soil aeration and water and fertilizer coupling. The double-cropping rice based ecological ditch cultivation method includes the steps of 1), executing ditching engineering in a late rice field; 2), performing water management before harvesting late rice; 3), treating late rice stalks; 4), utilizing a chained ditcher to clean ditches and spread out mud; 5), planting winter crops; 6), performing field management; 7), harvesting the winter crops. The double-cropping rice based ecological ditch cultivation method has the advantages that an arable layer structure of soil is changed; full amount field returning and deep burying treatment of the crop straws can be realized at one step, and meanwhile, fertilizer is deeply applied, utilization rate of the fertilizer can be increased; water content of ditch soil is lowered, soil aeration is improved, and utilization rate of natural precipitation can be improved; no-tillage and non-straw burning of the winter crops are realized, and ecological effect is obvious in that operation energy consumption, haze and irrigation water can be reduced.

The invention discloses a double-cropping rice based ecological ditch direct-seeding cultivation method for triple-cropping early rice, aiming to solve the problem about crop straw returning to field, soil aeration and water and fertilizer coupling. The double-cropping rice based ecological ditch direct-seeding cultivation method includes the steps of 1), executing ditch engineering in a winter crop field; 2), performing water management before harvesting winter crops; 3), treating winter crop stalks; 4), cleaning ditches and spreading out mud; 5), directly seeding early rice; 6), performing field management; 7), harvesting the early rice. The double-cropping rice based ecological ditch direct-seeding cultivation method has the advantages that an arable layer structure of soil is changed; deep application of fertilizer is benefited and utilization rate of the fertilizer is beneficially increased; water content of ditch soil is lowered, soil aeration is improved, and utilization rate of natural precipitation can be improved; no-tillage, no-straw burning and no-filling and soaking of field water in transplanting the early rice are realized; and ecological effect is obvious in that operation energy consumption, haze and irrigation water can be reduced.

The present invention relates to a forward-rotating rotary cultivation whole straw mulch-durying method. It is mainly characterized by that it utilizes the rotation of rotary tiller blade shaft to drive stubble-burying blade to mulch-bury the straw. Said blade shaft is forwards rotated, and its rotating speed is 340-500 rpm, and its drive mechanism adopts reduction drive mode of gear drive or gear and chain drive. Besides, said invention also provides the concrete operation steps of said method.

The invention discloses a harvester which comprises a harvesting device and a traveling device, as well as a threshing processing device 1 and a rotary tilling device 2, wherein the threshing processing device 1 is arranged at the upper part of the back of a header of the harvester, the rotary tilling device 2 is arranged at the lower part of the back of the header, and a straw outlet 3 of the threshing processing device 1 is arranged in front of the rotary tilling device 2. The harvester can realize the total returning of straw while harvesting, thereby fully recycling straw resources, saving the resources, and improving the soil moisture under the condition of realizing the scientific environmental protection.

The present invention provides an under-mulch-plastic-film drip irrigation area promoting type corn straw returning-field method. According to the method, the straw composting rate is regulated by using a straw composite decomposition bacterial agent and an excitant and by covering a under-mulch-plastic-film drip irrigation system with a degradable mulch plastic film, and according to the growth and development requirement law of corn in the under-mulch-plastic-film drip irrigation area on nutrients, the nutrients required by corn are timely supplemented and the soil fertility is improved so as to achieve the scientific management and the efficient use of the straws. In the prior art, the under-mulch-plastic-film drip irrigation area corn straw returning-field causes the soil microorganism action so as to compete the nutrients with the corn seedlings, such that the problems of corn seedling weakening, corn seedling death and yield reducing are caused. With the method of the present invention, the problems in the prior art are solved, the rural environment is improved, and the technical difficulty of the under-mulch-plastic-film drip irrigation area corn straw returning-field is broken through.

The invention discloses a wheat field interplanting no-tillage rice direct seeding method. The method is used for directly seeding rice after wheat is harvested. By adopting proper operation, a large amount of labor cost is reduced, the later use amount of fertilizer is reduced, the rice grows well, the yield is high, the organic matter content of soil is high, and meanwhile the occurrence of the phenomenon that wheat straw is incinerated after wheat is harvested is avoided.

The invention discloses a rice cultivation method based on a rice-rice-oil triple cropping system. The method comprises the following steps of not performing ploughing, not applying herbicides, not irrigating field soaking water, not performing rotary tillage before planting of next crop, keeping a field surface dry, performing harvesting and crushing on a previous crop to obtain crushed straws ofthe previous crop, and leaving stubbles of the previous crop after harvesting; pressing down stubbles of the previous crop, and carrying out seed sowing of the next crop; and after stubbles of previous crop are rebounded, enabling the crushed straw of previous crop to cover on stubble surface of previous crop. According to the method, the soil plough layer structure is changed, a straw layer, a seed fertilizer layer and a soil layer are formed from top to bottom, full-amount returning of the crop straw is achieved at a time, the straw is converted into a covering object, seeds and fertilizerare covered, and the covering object is used for covering the seeds and the fertilizer. The fertilizer utilization efficiency is favorably improved, and the optimal coupling of crop straw treatment, mechanical production and crop growth is realized. Chopped straw is arranged above the seeds to serve as a protective layer, so that sun protection, rain erosion prevention and bird damage prevention are achieved.

The invention discloses a double-cropping rice based ecological ditch transplanting cultivation method for triple-cropping early rice, aiming to solve the problem about crop straw returning to field, soil aeration and water and fertilizer coupling. The double-cropping rice based ecological ditch transplanting cultivation method includes the steps of 1), executing ditch engineering in a winter crop field; 2), performing water management before harvesting winter crops; 3), treating winter crop stalks; 4), cleaning ditches and spreading out mud; 5), transplanting early rice; 6), performing field management; 7), harvesting the early rice. The double-cropping rice based ecological ditch transplanting cultivation method has the advantages that an arable layer structure of soil is changed, a sludge layer, a straw layer and a soil layer are formed from top to bottom; deep application of fertilizer is benefited and utilization rate of the fertilizer can be increased; good water discharge capacity of narrow ditch surfaces and good water-holding capacity of the ditches are utilized; no-tillage, no-straw burning and no-filling and soaking of field water in transplanting the early rice are realized; and ecological effect is obvious in that operation energy consumption, haze and irrigation water can be reduced.

A method for planting rice in wheat field without ploughing includes such steps as harvesting wheat by retaining high stubble (20-30cm), inserting the wheat straw in ground, irrigating, applying N fertilizer, retting for 5-7 days, transplanting rice seedlings in throwing mode, keeping 3-5 cm water layer, wet management in middle phase, and being in the milk by shallow water layer.

The invention relates to an oil-rice rotation method. The method comprises the steps that a compartment ditch is dug in a field surface, a compartment surface and compartment ditches distributed in the two sides of the compartment surface are formed, then oilseed rape is planted on the compartment surface, and field management is conducted; the oilseed rape is harvested, first fertilizer is spreadon the compartment surface on the harvesting day, then oilseed rape straw is collected and smashed, then rice is sown on the day without rotary tillage, the straw is returned to the field, a first fertilizer layer, a first seed layer and a first straw layer which are sequentially distributed from bottom to top are formed on the compartment surface, the rice is harvested, second fertilizer is spread on the compartment surface on the harvesting day, then rice straw is collected and smashed, then the oilseed rape is sown on the day without rotary tillage, the straw is returned to the field, anda second fertilizer layer, a second seed layer and a second straw layer which are sequentially distributed from bottom to top are formed on the compartment surface; and rice harvesting, oilseed rape planting, oilseed rape harvesting and rice planting are repeated to achieve oil-rice rotation. Accordingly, efficient oil-rice rotation can be achieved, and the straw and land resources are utilized tothe maximum extent.

The invention discloses a no-tillage direct seeding method for seeds. The no-tillage direct seeding method comprises the following steps of not performing ploughing, not applying herbicide, not irrigating field soaking water, not performing rotary tillage before planting of next crop, keeping the field surface dry, carrying out harvesting and crushing on the previous crop to obtain the crushed straw of the previous crop, and leaving the stubbles of the previous crop after harvesting; pressing down stubbles of the previous crop, and performing seed sowing of the next crop; and after stubbles ofprevious crop are rebounded, enabling the crushed straw of previous crop to cover on stubble surface of previous crop. The invention also discloses an oilseed rape cultivation method based on a rice-rice-oil triple cropping system; and the soil plough layer structure is changed, a straw layer, a seed fertilizer layer and a soil layer are formed from top to bottom, full-amount returning of crop straw is achieved at a time, the straw is converted into a covering, seeds and chemical fertilizer are covered, the fertilizer utilization efficiency is improved, and optimal coupling of crop straw treatment, mechanical production and crop growth is achieved.

The invention provides a front-loading push pressing type machine for returning straw to rows, capable of being variable in a single row and dual rows. The front-loading push pressing type machine comprises a grass raking disk, a grass raking disk bearing seat, a main machine frame, an upper machine frame, a lower machine frame, a lifting oil cylinder, front brackets, a lower connecting frame, a grass raking disk supporting rod, a pressure spring shaft, a pressure spring, a right angle clip and a supporting plate. In different connecting manners of components, a single-row push pressing type machine for returning straw to rows can be formed, a dual-row push pressing type machine for returning straw to rows can also be formed, and the front-loading push pressing type machine is simple and convenient to mount and can be adapted to matching requirements of various planting machine tools. During operations, the front-loading push pressing type machine disclosed by the invention is mountedat a counter weight position in front of a tractor, the lifting oil cylinder of the machine for returning straw to rows is used for controlling lifting of the machine tools, the grass raking disk is subjected to side force in the advancing direction to turn, flexible teeth on the grass raking disk are used for separating and poking the straw to two sides, and the purpose of returning the straw tothe rows can be realized; and through regulating the mounting hole position of the supporting plate, the working angle of the grass raking disk is determined, the positions of the front brackets are regulated, and the width of the rows on which the straw is returned can be determined. The front-loading push pressing type machine disclosed by the invention is breakthrough of a protective cultivation whole-course mechanized technique, and difficult problems of sowing under whole-quantity straw covering can be solved.

The invention provides a method for composting corn straw field in-situ earth surface strips. The method comprises the steps of firstly, crushing corn straw and covering the earth surface with the crushed corn straw; then, pushing the crushed corn straw, covering on seeding belts of next-stubble crops, to the two sides, cleaning bare to-be seeded belts which are not covered by the corn straw, andarranging a strip-shaped straw covering belt with width of 30-60cm between the every two adjacent to-be-seeded belts; pressing the middle parts of the covering belts to form composting belt trenches,applying a composting material to the composting belt trenches, and adjusting the carbon-nitrogen ratio of the composted material to (20 to 1)-(30 to 1); then, filling the composting belt trenches with part of the straw so as to form strip-shaped composting belts; using a strip tillage and stubble cleaning machine to perform shallow ploughing operation treatment, and covering the strip-shaped composting belts with surface soil; pressing the strip-shaped composting belts to obtain the corn straw field in-situ earth surface decomposing belts. The method provided by the invention can realize total crop return of the corn straw, cooperatively uses livestock breeding wastes, is high in cyclic utilization rate, effectively improves field fertility, reduces the applying quantity of chemical fertilizer and is convenient and fast in whole operation, thus being worth popularizing.

The invention discloses a soil turning and stubble burying machine which comprises at least one shovel knife and a traction frame, wherein the shovel knife has a certain width and is horizontally arranged; the traction frame is arranged above the shovel knife; the two sides of each shovel knife are respectively fixed on the traction frame by a connecting seat; the front end of the traction frame is connected with an external traction device; a soil guide plate and a soil turning device are sequentially arranged above the inclined rear of the shovel knife; the traction frame is driven to make horizontal motion by the external traction device; the external traction device can drive the shovel knife to scoop up the soil of a plough layer and enable the scooped soil of the plough layer to be sent onto the soil turning device along the soil guide plate; the traction frame is provided with a transmission mechanism which can output power so as to drive the soil turning device to overturn, so that the soil, conveyed to the upper part of the soil turning device, of the plough layer can be overturned and covered on the scooped ground surface. The soil turning and stubble burying machine can maintain the granular structure of the soil to the utmost extent while deeply burying full amount of straw and returning the straw to field, thus being especially beneficial to promoting the development of environment-friendly agriculture; the straw burning is replaced by burying via the machine, so that the agriculture carbon emission is reduced, and the agricultural sustainable development is promoted.

The invention relates to the technical field of agriculture planting, and discloses a method for inter-planting rice in wheat field with ultra-high stubble. The method comprises the steps that in the middle-late grain-filling stage of wheat, treated rice seeds are sown on the surface of the wheat field in a broadcast mode, when the wheat is harvested, about 30 cm of high stubble is reserved, and after the wheat is subjected to threshing, straw is scattered on the spot or buried into dead furrows nearby; the method further comprises the step of field management of wheat harvest, such as water management, fertilizer management, chemical weed control and disease and insect control. By means of the method, all wheat straw returning is achieved, soil can be improved, agricultural sustainable development can be promoted, and the situations that farmers burn the straw in the open air and environments are polluted are avoided; besides, the land does not need to be cultivated and no machines are needed to transplant rice seedlings so that the fuel consumption of the machines can be reduced; compared with common rice direct sowing, the cultivated land is saved.

Disclosed is an ecological utilization method for straws from a rice paddy with shrimps in the northern Jiangsu area. The ecological utilization method includes the following steps: straw treatment, aquatic plant planting and water control. By using the ecological utilization method, the problem of heavy loss caused by death of procambarus clarkia and young procambarus clarkia due to the possibility that the quality of water in the rice paddy with shrimps becomes poor within short time after water overflows when the straws from rice paddy with shrimps are returned to the field is mainly solved, the straws from a rice paddy with shrimps are totally returned to the field by improving a returning way, returning quantity and utilization way of the straws and taking technical measures such as water quality control, aquatic plant layout and benthonic organism cultivation, zero discharge of water overflowing the field is realized in the whole process, and 150 Kg or above of young procambarusclarkia is cultured per mu.

The invention discloses a double-cropping no-tillage seedling-throwing straw-to-farmland rice high-yield and high-efficiency production method which comprises the following steps of: a, cleaning a ditch and draining in winter, to be specific, ditching to let rice field leakage water go in winter so as to keep no accumulated water on a field surface before seedling throwing of early season rice; b, performing no-tillage planting and management on the early season rice, to be specific, growing seedlings of the early season rice by using a plastic soft tray, throwing the seedlings when the seedlings have 3.5-4.5 leaves, and wetting as well as irrigating the early season rice in the whole process; c, utilizing straws of the early season rice, to be specific, remaining high stubbles while harvesting the early season rice; d, performing no-tillage planting and management on late rice, to be specific, growing seedlings of the late rice by using the plastic soft tray or growing the seedlings in a dry manner without the tray, and adopting an irrigation mode of irrigating shallowly and exposing the field; e, utilizing the straws of the late rice, to be specific, remaining high stubbles while harvesting the late rice. The double-cropping no-tillage seedling-throwing straw-to-farmland rice high-yield and high-efficiency production method solves the problems of great tillage labor intensity, slow nutrient transformation, easy runt seedlings and no growth of the rice, late maturity, low yield and the like of soil gleyization and secondary soil gleyization rice production in south rice areas, is a matured production technology for improving low-yield rice fields in soil gleyization and secondary soil gleyization, and achieves great application and generalization values in the aspects of reducing agricultural production cost, improving soil organic matters, decreasing fertilizer applying amount, increasing rice yield, improving moisture and fertility preservation performances of soil and the like.

The paddy field mechanized farming technique relates to farmland farming technology. The steps are as follows: after harvesting, spread the straw evenly, then pour water into the field, and then carry out rotary tillage with water and leveling compound operations. The invention has the advantages of short farming cycle, time saving and labor saving. features.

The invention provides a rear-mounted four-row corn straw strip collecting machine. The rear-mounted four-row corn straw strip collecting machine comprises a rack, an upper suspension, a lower suspension, a stretching hydraulic cylinder, a limiting spring, an outer support, finger plate supporting arms, an adjuster, finger plates and a limiting buckle. During operation, the machine is connected with a rear suspension of a tractor, lifting of the machine is controlled by a suspension system, lifting of the outer support is controlled by a hydraulic system, the finger plates naturally float on the ground by means of the weight of the machine, the finger plates rub with the ground through forward power of the tractor to generate rotation during operation, the finger plate distributes straw on the ground to two sides, and straw collection is achieved. The angle between the finger plates is adjusted through the adjuster, so that the width of straw on the ground after straw collection is controlled. The machine is a breakthrough of a whole-process mechanization technology for corn conservation farming, and solves the problem of seeding under full-amount straw coverage.

The invention discloses a double-cropping rice based ecological ditch cultivation method for triple-cropping winter crops, aiming to solve the problem about crop straw returning to field, soil aeration and water and fertilizer coupling. The double-cropping rice based ecological ditch cultivation method includes the steps of 1), executing ditching engineering in a late rice field; 2), performing water management before harvesting late rice; 3), treating late rice stalks; 4), utilizing a chained ditcher to clean ditches and spread out mud; 5), planting winter crops; 6), performing field management; 7), harvesting the winter crops. The double-cropping rice based ecological ditch cultivation method has the advantages that an arable layer structure of soil is changed; full amount field returning and deep burying treatment of the crop straws can be realized at one step, and meanwhile, fertilizer is deeply applied, utilization rate of the fertilizer can be increased; water content of ditch soil is lowered, soil aeration is improved, and utilization rate of natural precipitation can be improved; no-tillage and non-straw burning of the winter crops are realized, and ecological effect is obvious in that operation energy consumption, haze and irrigation water can be reduced.

The invention provides a front push-press type double-row corn straw sorting machine. The front push-press type double-row corn straw sorting machine comprises a straw raking disc, a straw raking discbearing seat, a lower rack, an upper rack, a main rack, a lifting oil cylinder, a pressure spring shaft, a pressure spring, a front bracket, a right-angle clamp and a supporting plate. During operation, the front push-press type double-row corn straw sorting machine is mounted at a front counterweight position of a tractor; the lifting oil cylinder of the sorting machine controls the lifting of amachine tool; the straw raking disc rotates under the action of lateral force in the advancing direction; elastic teeth on the straw raking disc are used for distributing straw to two sides to realize straw sorting; the working angle of the straw raking disc is determined by adjusting a mounting hole position of the supporting plate; and the position of the front bracket is adjusted to determinethe straw sorting width. The front push-press type double-row corn straw sorting machine is a breakthrough of a whole-process mechanical technology of protective tillage, and the problem of sowing under full straw coverage is solved.

The invention provides a front double-row three-column straw cleaning machine. The machine comprises a main machine frame, a connecting frame, a lower support, a cleaning disc frame, a cleaning disc, a hydraulic cylinder, a compressed spring rod, a compressed spring, a short connecting pin, and a long connecting pin. During operation, the front double-row three-column straw cleaning machine is installed at the position of a front counter weight of a tractor, the hydraulic cylinder of the cleaning machine controls a machine tool to ascend and descend, the cleaning disc rotates under lateral force in the advancing direction, and elastic teeth on the cleaning disc distribute straw to the two sides, so that straw cleaning is achieved; and the working angle of a raking disc is determined by adjusting the installation angle of the cleaning disc frame, so that the width of the cleaned straw is determined. The front double-row three-column straw cleaning machine is a breakthrough of a mechanization technology in the whole process of protective farming, and solves the problem that seeding is affected by full-amount straw coverage.

The invention provides a single-row seedling strip tillage and preparation combined machine in a straw row-returning mode. The single-row seedling strip tillage and preparation combined machine comprises a rack, a gearbox, a rotary tillage shaft, a large chain wheel, a small chain wheel, a chain wheel transmission shaft, a spline transmission shaft, a soil pressing plate, a pressure spring rod, apressure spring, a pressing roller, a pressing roller bearing pedestal, rotary blades, roller chains, chain wheel covers, land wheels, lower suspension rods, upper suspension rods, pressing roller connecting rods and the like. The machine can perform rotary tillage operation on a seedling strip under the condition of returning all straws to the field and returning the straws to rows, so that surface hardened soil is improved, the ground temperature is increased, and the water retention capacity of soil is improved. The single-row seedling strip tillage and preparation combined machine is a breakthrough of a protective tillage whole-process mechanization technology.

The invention discloses a double-cropping rice based ecological ditch direct-seeding cultivation method for triple-cropping early rice, aiming to solve the problem about crop straw returning to field, soil aeration and water and fertilizer coupling. The double-cropping rice based ecological ditch direct-seeding cultivation method includes the steps of 1), executing ditch engineering in a winter crop field; 2), performing water management before harvesting winter crops; 3), treating winter crop stalks; 4), cleaning ditches and spreading out mud; 5), directly seeding early rice; 6), performing field management; 7), harvesting the early rice. The double-cropping rice based ecological ditch direct-seeding cultivation method has the advantages that an arable layer structure of soil is changed; deep application of fertilizer is benefited and utilization rate of the fertilizer is beneficially increased; water content of ditch soil is lowered, soil aeration is improved, and utilization rate of natural precipitation can be improved; no-tillage, no-straw burning and no-filling and soaking of field water in transplanting the early rice are realized; and ecological effect is obvious in that operation energy consumption, haze and irrigation water can be reduced.

The invention provides a rear-mounted four-row adjustable corn straw strip collecting machine. The rear-mounted four-row adjustable corn straw strip collecting machine comprises a main machine frame,a left extending frame, a right extending frame, connecting frames, lower brackets, horizontal supporting beams, front brackets, left raking disk bearing seats, right raking disk bearing seats, pressure springs, supporting plates, right angle clamps, lifting oil cylinders, raking disks, and pressure spring shafts. During operation, the rear-mounted four-row adjustable corn straw strip collecting machine is mounted at a rear three-point suspension structure of a tractor through suspension points; the suspension structure of the tractor is used for controlling the lifting of tools; the lifting oil cylinders are used for controlling contracting and extending of the left extending frame and the right extending frame; the raking disks rotate under the stress of lateral force in the advancing direction; elastic teeth on the raking disks are used for toggling straw to two sides, so that straw strip collection is realized; through adjusting the positions of the horizontal supporting beams andthe front brackets, four complete blank strips or three complete blank strips and half blank strips on the left side and the right side can be cleaned out by the strip collecting machine; the rear-mounted four-row adjustable corn straw strip collecting machine disclosed by the invention is a breakthrough of a whole-process mechanized technique of protective tillage; and the difficult problem of sowing under covering of the whole straw is solved.