54 results about "Monocropping" patented technology

The invention relates to a method for constructing a high-yielding cotton population structure of a jujube and cotton intercropping drip irrigation cotton field in Xinjiang. The method includes steps of creating a suitable population environment in the drip irrigation high-yielding cotton field; preparing seeds; sowing the seeds; irrigating; applying fertilizers; chemically regulating the cotton field; controlling diseases, insects and weeds; performing topping; and harvesting and the like. The method has the advantages that the high-yielding cotton population structure of the jujube and cotton intercropping drip irrigation cotton field in Xinjiang can be constructed; and as shown by investigation for a plurality of fields, specific indexes of the high-yielding population structure include that the maturity of selected cotton varieties is 5-8 days earlier than the maturity of local mono-cropping main cotton varieties, the period between a sowing stage and a boll opening stage is 148-156 days, cotton reaches the boll opening stage on 12-20 September under a jujube and cotton intercropping condition, the cotton assuredly reaches the boll opening stage on 12-20 September under the jujube and cotton intercropping condition, the maximum leaf area index is 3.9-4.3, the plant height is 69-77cm, the plant width is 51-58cm, the light interception rate of the cotton at a peak polling stage is higher than 80%, the fruit branch number is 8.6-9.2, the number of unit-plant bolls is 3.9-4.3 per plant, the actual number of harvesting plants is 15380-17450 per mu (net area), and the boll yield is 61581-71337 per mu.

The invention provides a method for relay intercropping a silage corn in a single-culture alfalfa field in summer. The method comprises the following steps: A. sowing the alfalfa in lines; B. cradling the alfalfa and performing field management: the cradling action for the second time is performed on the premise of irrigation five days before or that the soil moisture content after rain is appropriate; C. interplanting the corn, in the same day when the alfalfa is cradled for the second time, sowing the corn directly; D. managing the corn: dressing 60 kg of ammonium bicarbonate or 25 kg of urea per mu for the corn in the bell stage, and immediately watering or applying during raining; E. cradling the alfalfa: in the corn growth period, not cradling the alfalfa; F. harvesting the corn: using a cornstalk silage harvester to remove stubbles and harvest the alfalfa, and mixing the corn and the alfalfa to be ensiled. The method makes full use of time and space difference between the alfalfa and the corn in the growth process, takes full advantage of the land source, and completely uses the water resource and photo-thermal resource from July to September, to improve the comprehensive grass yield, make up insufficient yield of the alfalfa in summer, and also solves the problem that the alfalfa is difficult to harvest in the rainy season.

The invention provides a high-yield planting method of interplanting pepper and corn to control diseases and pests, and belongs to the technical field of agricultural cultivation. The method comprises the following steps: pepper and corn are planted according to the field distribution of 8-10 rows of pepper and 2 rows of corn; the planting specification of pepper is that the row spacing is 40 cm and the planting spacing is 35 cm, and pepper is planted by single plant; the planting specification of corn is that the row spacing is 35 cm and the planting spacing is 30cm, and corn is planted by double plants; and pepper and corn are planted at an interval of 60 cm. The method has the benefits that dry hot pepper yield of pepper reaches 1935.63 kg / hm<2> to 2063.49 kg / hm<2>, increasing by 18% to 26%; capsaicin content is increased by 19% to 23%; vitamin C content in pepper is increased by 12% to 13%; corn yield is increased by 27% to 28%; and compared with single cropped pepper, the control effect on epidemic diseases of pepper reaches 47% to 56%, the control effect on helicoverpa assulta of pepper reaches 42% to 55%, and the incidence rate of diseases and insects is remarkably reduced.

The invention discloses a pea and tobacco intercropping method. According to the method, based on the technical background of tobacco monoculture in the southwestern tobacco-growing area, pea seeds are sown on two sides of a tobacco ridge after laminas on the lower middle portion of tobacco are harvested or after harvest is completed, and a plastic net is hung on a tobacco stem as the climbing support of a pea, and then pea and tobacco intercropping is achieved. The pea and tobacco intercropping method has the advantages that the multiple crop index of land is improved; fertilization is not needed for pea planting, a large quantity of nitrogenous fertilizer and potash fertilizer left in tobacco land can be utilized, and the economical benefit of tobacco farmers is increased by 1000-1200 yuan / mu; the tobacco stem is used as the climbing carrier of the pea, and cost of 200-400 yuan / mu for building a support for the pea is saved; and due to the fact that the height of the tobacco stem can not meet climbing requirements of the pea, the plastic net is laid on the top of the tobacco stem by the applier to enable the pea to continue to climb after reaching to the top of the tobacco stem, and technical prejudice of technicians in the field is overcome.

The invention relates to a planting method for saline-alkali soil cyperus esculentus-chenopodium quinoa intercropping, and belongs to the technical field of crop planting. The method specifically comprises the following steps of (1) soaking seeds and germinating; (2) conducting soil preparation and fertilizing; (3) ridging cyperus esculentus, conducting mulching film covering planting, and intercropping two rows of the chenopodium quinoa in two ridges of the cyperus esculentus; (4) conducting field management. Through the intercropping of the cyperus esculentus and the chenopodium quinoa, it is avoided that the yield is seriously reduced after the planting of chenopodium quinoa continuous cropping, the phenomenon of 'land resting' caused by the long-term single cropping of the chenopodiumquinoa is prevented, the utilization of soil is improved, the yield of the cyperus esculentus and the chenopodium quinoa is improved, higher economic benefits are obtained, and the intercropping planting model lays the foundation for the large-scale popularization and planting of the saline-alkali soil cyperus esculentus and chenopodium quinoa.

The invention discloses a method for breeding alpinia oxyphylla seedlings under rubber trees. According to the method, the alpinia oxyphylla seedlings are bred among rubber tree rows in a rubber forest land with the gradient ranging from 0 degree to 15 degrees, wherein the plant spacing between every two rubber trees is 2-3 m, the row spacing is 6-8 m, the tree age is 10 years and above, the shading degree under the rubber trees is appropriately 70-90%, the plant and row spacing of the rubber trees is large, the general plantation density is that the plant and row spacing is 3m * 7m, the land utilization rate is low, if only the rubber trees are planted, water and soil loss is severe, soil fertility is lowered, and the ecological environment is prone to damage; weeds grow easily if only the rubber trees are planted, and management cost is high. According to the method, resource use efficiency of a rubber tree plantation is give full play, comprehensive benefits of the rubber tree plantation are increased, the alpinia oxyphylla seedlings are bred under the grown rubber trees, the land utilization rate of the rubber forest land can be raised, growth of weeds is inhibited, cost of breeding the alpinia oxyphylla seedlings can be lowered, economic benefits are increased, and the method is an effective measure for comprehensively upgrading the rubber and alpinia oxyphylla seedling breeding industries.

The invention discloses a method for preventing and controlling nitrate leaching loss of soil in a dry farming land of North China Plain by utilizing a mode of interplanting corn and soybean. Aiming at the problems that a dry farming land of the North China Plain is rainy and hot synchronously, the fertilizing amount of single culture of corn is large, the residual quantity of nitrate nitrogen in soil is large, the risk of nitrogen leaching loss is very high, the method effectively controls nitrate leaching loss of soil by interplanting corn and soybean summer sowing season. According to the invention, appropriate irrigation is performed during sowing; open type management is adopted during the growing period of crops; optimized fertilization is performed to corn bands and soybean bands respectively; the fertilizing amount is subjected to the local recommended fertilizing amount of corresponding crops, and fertilizer is applied between rows of corresponding crops; and during the critical growing period of the crops, if rain water is sufficient, irrigation is not performed, and if no rain comes or rain water is insufficient, appropriate irrigation is performed. The method can be implemented to effectively prevent and control the risk of nitrate pollution of a dry farming land of North China Plain, and has relatively remarkable economic benefits and environmental benefits.

The invention discloses a soil improvement method for planting fruit trees, and relates to the technical field of soil improvement. The method is used for solving the problems that soil for planting the fruit trees in the prior art is low in organic matter content and low in fruiting rate. The method comprises the steps of A, green manure planting, wherein a single-cropping green manure planting method is adopted during two years of soil fallow, sweet clovers and vicia villosa are rotated, and the harvested sweet clovers and the vicia villosa are crushed and turned over in the fallow land; B,deep tillage of soil, wherein the soil in step A is subjected to deep tillage, and the deep tillage depth of the soil is 60-90 cm; C, high edges and wide ditches are dug, wherein the land in step B isdivided into a plurality of land strips with the width of 4.5 m, deep ditches are dug in the inner sides of the land strips, the soil of the deep ditches is evenly paved on the outer sides of the land strips to form the high edges, the ground plane of the land strips serves as a reference plane, the depth of the deep ditches is 30 cm, and the height of the high edges is 30 cm. The method has theadvantages that the content of organic matter in the soil is improved, fruit hanging of the fruit trees is facilitated, and waterlogging is prevented; meanwhile, the fruit trees are planted on the high edges, and wide-furrow plantation of shade-tolerant crops increases the land utilization rate.

The invention discloses a cultivation method for intercropping of corn and pepper, and relates to a cultivation method for corn and pepper. The problems that the lower middle portion of an existing monoculture corn population is insufficient in illumination and low in solar energy utilization rate, the top of a monoculture pepper population is excessively illuminated, and sunscald is likely to happen are solved. The method comprises the steps of 1 land selection and soil preparation, 2 seed selection and treatment, 3 intercropping mode, 4 pepper seedling raising and seedling management, 5 proper corn sowing and reasonable close planting, 6 proper pepper transplanting, 7 scientific fertilization, 8 precision management and 9 proper harvesting. The relative illumination intensity of the lower middle portion of the corn population is improved by 10.7-43.1% compared with monoculture corn; illumination of the top layer of the pepper population is only 50-60% that of a monocropping pepper population, the yield of fresh pepper is 5,344 kg / hm<2>, the corn yield is 11,642 kg / hm<2>, and the yield is increased by 11.5% compared with monocropping of corn. The method is used for the field of corn and pepper planting.

The invention discloses an unmanned aerial vehicle agricultural pesticide application method. The method comprises the following steps: calculating the demand quantity of a specific application objectper unit area of a single plant according to historical data of a single cropping farmland and a planting forest region; forming a spraying maintenance table according to the calculation result of the demand quantity and the plant variety, and forming an allergy maintenance table according to the variety of the applied material and the plant variety; storing a spraying maintenance table and the allergy maintenance table into a pesticide application scheme maintenance table; forming a daily pesticide application flight task table according to the pesticide application scheme maintenance table,performing unmanned aerial vehicle preset path planning on each task in the daily pesticide application flight task table, and storing the preset path planning and the daily pesticide application flight task table; and executing the flight task on time according to the daily pesticide application flight task table, and before execution, selecting the throwing object required by the unmanned aerial vehicle loading flight task and scheduling the selected unmanned aerial vehicle. The method is used for scheduling the unmanned aerial vehicle to intelligently apply pesticide to farmlands and forest areas. The problem that an unmanned aerial vehicle cannot be dispatched to complete a pesticide application task is solved.

The invention provides an interplanting and crop rotation combined planting method of salvia miltiorrhiza and millet. According to the technical scheme, on the same land parcel, a salvia miltiorrhiza and millet interplanting mode is adopted in the first year: salvia miltiorrhiza in four rows in two ridges and millet in four rows are interplanted; a salvia miltiorrhiza and millet in-place crop rotation interplanting mode is adopted in the second year: salvia miltiorrhiza is planted in row width spaces of the millet interplanted in the first year, and millet is interplanted in a crop rotation manner in row width spaces of the salvia miltiorrhiza planted in the first year. A sustainable production planting method of the salvia miltiorrhiza is established, salvia miltiorrhiza and millet interplanting modes and methods are created and comprise the interplanting mode of salvia miltiorrhiza in two ridges (including four rows) and millet in four rows; a transplanting method of the salvia miltiorrhiza covered with black films; an in-place crop rotation interplanting method of the salvia miltiorrhiza and the millet. Various barriers including worse pest and disease damage, descending of yield and quality, difficulty in large-area crop rotation and the like due to monocropping and continuous cropping in production of the salvia miltiorrhiza are eliminated.

The invention discloses a compound ecological growing method of grapes and agaricus bisporus. The method comprises the steps of preparation and fermentation of raw materials for growing, season arrangement, bed neatening, material spreading, sowing, spawn running, earthing, fruiting and harvesting. Compared with a grape sole cropping method, the method has the advantages that the yield and quality of grapes can be increased, the land can be used more efficiently and three-dimensionally, the soil can be obviously improved, cyclic utilization of agricultural wastes can be achieved and conditions are provided for increasing farmers'income.

The invention discloses a rapid improving method for soil nutrient storage capacity and soil fertility of saline-alkali farmland in an irrigation area. The rapid improving method comprises the steps that straw and lignin fibers are evenly spread on the surface layer of the saline-alkali farmland after autumn harvest, deep ploughing and pressing burying are carried out to form a biomass interlayer,and upturned soil is sunned for overwintering; irrigating salt leaching is carried out in spring, a mixture of modified zeolite, medical stone, nanoscale zero-valent iron (nZVI), AM fungal inoculum and water-soluble polymer polyacrylamide (PAM) is spread, meanwhile, base fertilizer is applied according to soil texture, and rotary tillage and film mulching are carried out; and sole cropping, intercropping or multiple cropping of green manure are carried out, and ploughing, pressing and returning to the field are carried out, and the steps are cyclically used at regular intervals. According tothe rapid improving method for soil nutrient storage capacity and soil fertility of the saline-alkali farmland in the irrigation area, saline-alkali obstacles can be reduced for a long time, the soilagglomeration process is accelerated, the soil nutrient storage is increased, the soil carbon pool accumulation is promoted, and the multi-process mutual feedback synergistic promotion is realized.

The invention belongs to the technical field of crop-rotation planting of tobacco plants and discloses a double-cropping planting method for tobacco plants and autumn peas. The method comprises the steps: tobacco plant-autumn pea crops-for-rotation link: carrying out land preparation, and carrying out basal fertilizer application; autumn pea planting: carrying out sowing, carrying out fertilizer and water management, and carrying out harvesting; autumn pea-tobacco plant crops-for-rotation link: carrying out land preparation, carrying out ridge forming, carrying out basal fertilizer application, and carrying out mulching; and tobacco plant planting: carrying out seedling raising, carrying out transplanting, carrying out field management, and carrying out mature picking and curing. Accordingto the method, the problem on tobacco field soil obstacle caused by the existing tobacco plant planting single-cropping continuous-cropping mode can be effectively solved, soil nutrients are balanced, root system development is promoted, accumulation of harmful substances and plant diseases and insect pests are reduced, the yield and quality of tobacco leaves and comprehensive economic results ofa tobacco field are improved. Shown by experiments, by the method, organic matters of soil can be increased by 10%-20%, the structure of an arable layer is improved obviously, the incidence rate of diseases is lowered by 55%, the first-class tobacco ratio of the tobacco leaves is increased by 5%-7%, the chemical ingredient coordination and sensory evaluation score of the tobacco leaves are improved obviously, and the comprehensive economic results of farmers are increased by 15%-20%.

The invention relates to a high-yield planting method for winter corn and belongs to the technical field of planting, and particularly relates to a culture technology of winter corn. The invention provides the high-yield planting method for winter corn which is high in germination rate, strong in frost-resistance and strong in water and fertilizer absorption. The high-yield planting method for winter corn is characterized by comprising the following steps of: I, a seeding stage: a frostless region must be selected for planting winter corn; II, seeding specification and density: for high-yield culture of winter corn, the seeding specification is specified cultivation with wide and narrow row spacing, and a wide and narrow row spacing compound region is determined due to monoculture or intercropping; III, selection of a parcel of field suitable for planting winter corn: a parcel of field which has irrigation and drainage conditions and is loose in soil are selected to plant winter corn, the soil is maintained moist frequently, and robust growth of plants is promoted; and VI, film coverage: as the air temperature is relatively low for winter corn, the field capacity of the soil is reduced as a result of ending of rainy seasons, less rainfall and much wind.

The invention discloses a high-yield planting method of traditional-Chinese-medicine semen cuscutae. The high-yield planting method disclosed by the invention has the beneficial effects that by adoption of a selective seeding technology, the premature senility of host soybeans, even death, is avoided, the production output values of the semen cuscutae and hosts are increased and the comprehensivebenefit is improved; flat seeding and sole cropping of the hosts are adopted for parasitism of medicinal semen cuscutae and a wide-narrow row planting technology is adopted, so that the ventilating and light-transmitting space of the host soybeans is enlarged, the edge effect of the host is obvious, the light-energy utilization rate is increased, the fruiting rate of the medicinal semen cuscutae is increased and the comprehensive benefit is improved; a three-dimensional composite planting technology is adopted, the symbiotic period among the crops is short, the host soybeans have sufficient growth space and independent growth time in spite of hosting of the semen cuscutae, and then due to local excellent light-heat conditions, water and fertilizer conditions and field-management technicalmeasures and the like, not only can wheat, watermelons and soybeans be harvested, but also the dry seeds of the semen cuscutae can be harvested; not only are excellent natural resources such as light,heat, water, fertilizer utilized fully, but also the land utilization rate is increased, the soil fertility is improved and the economic income of farmers is increased.

The invention discloses an efficient planting method for intercropping semen coicis and early-maturing soybeans. According to the efficient planting method, the semen coicis and the soybeans are intercropped, so that cropping index, yield and income all can be increased in the manner of utilizing the empty land space in time difference and space difference in the early growth period of the semen coicis to intercrop a batch of soybean; the rhizobium of the soybeans can be fully utilized to fix nitrogen and increase nitrogen, and the available nutrients of soil can be added and supplied to the semen coicis after the soybean leaves are buried for improving and fertilizing the soil; on the basis of the characteristics of short symbiotic stage and high complementation of ecological benefits of the semen coicis and the soybeans, the maximal benefit of the land can be acquired; according to the method, the traditional mode of singly planting the semen coicis is broken through; the high and short crops are intercropped in a strip form, so that a height difference is formed, the growing season and the microclimate condition are fully utilized, the soil fertility, space and optical energy are reasonably utilized and the cropping index is increased; according to the efficient planting method, the yield of the semen coicis is more than or equal to the yield of singly planted semen coicis, 0.4 hectare of soybeans per hectare are additionally harvested and the purpose of increasing yield and income of the farmer is achieved.

The invention discloses a method for controlling rice blast and sheath blight by intercropping sagittaria sagittifolia in a rice field, and particularly relates to a method for planting rice and sagittaria sagittifolia in an intercropping way and harvesting mature rice and mature sagittaria sagittifolia in sequence. Field experiment results prove that with intercropping, rice and sagittaria sagittifolia have the symbiotic period in the field, so that the rice sheath blight infection rate of the rice intercropping cultivation is lower than that of rice monoculture; in an elongation stage, a heading stage, a filling state and a milk-ripe stage, the disease occurrence rates of the rice intercropping cultivation are respectively lower than that of the rice monoculture by 64.29%, 88.24%, 25% and 60%; furthermore, the rice blast infected leaf rate of the rice intercropping cultivation is lower than that of the rice monoculture on the whole, and the average control effect reaches up to 31.33%. Compared with the prior art, the method does not use chemical pesticides when being used for controlling the rice sheath blight and the rice blast, thus having obvious ecological economic benefits and guaranteeing the safe production of agricultural products; furthermore, field operation is convenient, and thus the method is convenient for actual popularization and application.

The invention relates to the field of crop planting, in particular to an intercropping method of cotton and peanuts. To increase the yield of the peanuts and cotton in the unit planting area, the intercropping method of the cotton and peanuts is provided. Six rows of peanuts are intercropped every four rows of cotton, and a spacing band with the width being 30-50 cm is arranged between a cotton sowing band and a peanut sowing band. The cotton and peanuts are intercropped, and the unit yield of the peanuts and cotton can be obviously increased; compared with mono-cultured cotton and peanuts, the average increasing yield of the cotton is 10-15%; the average increasing yield of the peanuts is 5% or above; according to the comparison between the intercropping mode under other proportion conditions and the proportion condition that six rows of peanuts are intercropped every four rows of cotton, the growing rates of the unit yield of the cotton and peanuts reach a maximum.

The invention belongs to the technical field of crop rotation planting of tobacco and discloses an efficient two-cop one-year planting method for tobacco-rapeseeds in a cold tobacco region in the north. The method comprises the following steps: performing crop rotation engagement of tobacco-rapeseeds, namely preparing a land and applying a basic fertilizer; planting rapeseeds, namely performing seed sowing, field management and maturation harvesting; performing crop rotation engagement of rapeseed-tobacco, namely preparing the land, forming ridges, applying a basic fertilizer, and performing film covering; and planting tobacco; namely performing seedling breeding, transplanting, field management and maturation harvesting and baking. By adopting the method, the problem of soil problems caused by a single-crop continuous cropping mode in conventional tobacco planting in a tobacco region in the north can be effectively solved, soil nutrients can be balanced, development of root systems can be promoted, accumulation of harmful substances and diseases and insects can be reduced, the yield of tobacco leaves can be increased, the quality of the tobacco leaves can be improved, and the comprehensive economic benefits of a tobacco field can be increased. By adopting the method, the content of organic matter in soil can be increased by 15-25%, structures of plough layers are remarkably improved, the occurrence rate of diseases and insects can be reduced by 60%, the ratio of high-quality cigarette of the tobacco leaves can be increased by 5-7%, chemical component harmony and sensory evaluation of the tobacco leaves is remarkably improved, and the comprehensive economic benefits of farmers can be increased by 15-20%.

The invention discloses a calcium adding efficient ecological planting method in a corn and peanut intercropping mode. According to the method, 'flower cultivating 25' is taken as an experimental material, in corn||peanut 3:4 intercropping and peanut monoculture planting modes, different amounts of added calcium are set for treatment, and the yield of peanuts, the net photosynthetic rate of leavesand differences of the physiological property of the peanuts are studied; the study result shows that by adding calcium suitably, the yield of the peanuts in intercropping and monoculture modes can be further increased conveniently, the yield increasing effect on middle rows in the intercropping mode under the calcium adding premise is significantly higher than that of the monoculture mode, and acalcium fertilizer is applied additionally to increase the net photosynthetic rate of the peanuts, improve the activity of CAT, POD and SOD of peanut leaves in the monoculture and intercropping modes, and reduce the content of MDA of the peanut leaves. It is shown that calcium applying is beneficial for increasing the yield of the peanuts, improving the adaptability of the peanuts to shading, andimproving the photosynthetic production capacity of the peanuts.

The invention relates to a method for constructing a high-yielding cotton population structure of a jujube and cotton intercropping drip irrigation cotton field in Xinjiang. The method includes steps of creating a suitable population environment in the drip irrigation high-yielding cotton field; preparing seeds; sowing the seeds; irrigating; applying fertilizers; chemically regulating the cotton field; controlling diseases, insects and weeds; performing topping; and harvesting and the like. The method has the advantages that the high-yielding cotton population structure of the jujube and cotton intercropping drip irrigation cotton field in Xinjiang can be constructed; and as shown by investigation for a plurality of fields, specific indexes of the high-yielding population structure include that the maturity of selected cotton varieties is 5-8 days earlier than the maturity of local mono-cropping main cotton varieties, the period between a sowing stage and a boll opening stage is 148-156 days, cotton reaches the boll opening stage on 12-20 September under a jujube and cotton intercropping condition, the cotton assuredly reaches the boll opening stage on 12-20 September under the jujube and cotton intercropping condition, the maximum leaf area index is 3.9-4.3, the plant height is 69-77cm, the plant width is 51-58cm, the light interception rate of the cotton at a peak polling stage is higher than 80%, the fruit branch number is 8.6-9.2, the number of unit-plant bolls is 3.9-4.3 per plant, the actual number of harvesting plants is 15380-17450 per mu (net area), and the boll yield is 61581-71337 per mu.

The invention relates to the technical field of biology, and particularly relates to a comparative transcriptome analysis method for peanut leaf gene differential expression under intercropping corn. The method comprises the steps that an RNA-seq technology is utilized for comparing and analyzing differential expression genes of peanut functional leaves in the pod expansion period under peanut single cropping and intercropping corn stress; differential genes related to metabolic pathways are taken as main genes, important genes and key metabolic pathways formed by peanut pod yield under intercropping corn stress are excavated, and a theoretical basis is provided for reducing adverse effects of intercropping corn stress on peanut yield by means of a directional chemical regulation and control technology; and the relative expression level of candidate differential expression genes is verified through qRT-PCR detection, and finally the qRT-PCR detection result is roughly consistent with multiple changes in transcriptome sequencing analysis. The transcriptome sequencing analysis method is accurate, feasible, effective and simple.

The present invention discloses a farmland wind-erosion-preventing planting method in desert oasis areas. Wheat is sown in late ten-day of March of the first year, after the wheat is harvested, high stubble and straw covering are conducted, no-till is conducted, winter rape is replanted in a timely manner, corn is sown after the rape is harvested the following year, harvesting is conducted in thesame year, crop planting and farming pattern of the third year are the same as those of the first year, crop planting and farming pattern of the fourth year is the same as those of the second year, and the cycle is repeated; monocropping wheat is applied with 225 kg.hm<-2> of a nitrogen fertilizer and applied with 150 kg.hm<-2> of a P2O5 phosphorus fertilizer, and the winter rape is applied with 300 kg.hm<-2> of ammonium dihydrogen phosphate before sowing; 10 days after turning to green and in an initial flowering stage, 225 kg.hm<-2> of urea or ammonium nitrate is applied respectively combined with irrigation; and corn is applied with 360 kg.hm<-2> of the nitrogen fertilizer and 225 kg.hm<-2> of the P2O5 phosphorus fertilizer. Beneficial effects are as follows: the technology can increase soil cover of farmlands, reduces soil wind erosion caused by soil bareness, and can also maintain high and stable crop yields.

The invention discloses a double cropping rice yield increase method and relates to the technical field of agricultural planting. The method includes the following steps of during planting of double cropping rice, reducing application of chemical nitrogen fertilizer and adopting green manure for mixed cropping to achieve yield increase of double cropping rice. During adoption of the green manure for mixed cropping, four patterns are applied, wherein astragalus sinicus L. is adopted for monoculture AS under the first pattern, astragalus sinicus L. and ro-phanus sativus L.var.raphahistroides areadopted for mixed cropping AR under the second pattern, astragalus sinicus L. and lolium perenne L. are adopted for mixed cropping AL under the third pattern, and astragalus sinicus L., ro-phanus sativus L.var.raphahistroides and lolium perenne L. are adopted for mixed cropping ARL under the fourth pattern. Through research, it is determined that by adopting the green manure for replacing partialbasal application of chemical nitrogen fertilizer, increase of the yield of the double cropping rice is facilitated, and a great effect can be achieved by adopting astragalus sinicus L. for monoculture and adopting astragalus sinicus L. and ro-phanus sativus L.var.raphahistroides for mixed cropping.

The invention relates to the technical field of agriculture and discloses a suitable planting method for increasing the yield and increasing the harvest in red soil drylands. The method includes: selecting potato varieties with strong draught tolerance and early maturity, selecting compact and semi-compact corn varieties suitable for intercropping, and selecting summer soybean varieties with strong draught tolerance in the later stage; adopting the planting pattern of intercropping of potatoes, spring corn and summer soybean, wherein the potatoes are planted in trenches in the middle and laterJanuary of each year and harvest in mid-May, the spring corn is sown in early April, and the summer soybean is sown in 20-30 days after the potatoes are harvested. The pattern of intercropping of thepotatoes, spring corn and summer soybean, the summer soybean is planted after harvest of the early maturing potatoes, reasonable layout is achieved, the conventional one-year single cropping mode ischanged into one-year three-cropping interplanting mode, the utilization efficiency of water, light and heat resources is increased, and the income is also increased.

The invention discloses a high-yield and high-efficiency cultivation method for improving the survival rate of radix bupleuri by intercropping corn and radix bupleuri. The method comprises the steps of land selection, soil preparation, fertilization, corn planting and field management, radix bupleuri seed treatment, radix bupleuri sowing time management, radix bupleuri sowing method management, radix bupleuri fertilization, field management and radix bupleuri harvesting. Planting of the radix bupleuri is taken as the principal thing, the radix bupleuri is intercropped with the corn in the first year, and the fleshy roots of the radix bupleuri are harvested in the second year. A cultivation mode of intercropping the radix bupleuri and the corn is adopted, the requirement that the radix bupleuri is shade-loving in the seedling stage and is photophilous in the middle and later periods is fully met, the emergence rate and survival rate of the radix bupleuri are increased, and the yield isgreatly increased. The corn and the radix bupleuri are intercropped, the land coverage rate is increased due to the planting of the corn in the seedling stage of the radix bupleuri, the growth of field weeds is effectively reduced, the problem of breeding of single-cropping weeds of the radix bupleuri is solved, the investment of labor force is reduced, and the method is a light and simple planting mode. The principles of complementary advantages and balanced utilization of nutrients are fully exerted on the absorption of soil nutrients by intercropping of the corn and the radix bupleuri, andbalanced absorption of nitrogen, phosphorus and potassium is realized in the aspect of nutrient types.

The invention discloses a method for breeding alpinia oxyphylla seedlings under rubber trees. According to the method, the alpinia oxyphylla seedlings are bred among rubber tree rows in a rubber forest land with the gradient ranging from 0 degree to 15 degrees, wherein the plant spacing between every two rubber trees is 2-3 m, the row spacing is 6-8 m, the tree age is 10 years and above, the shading degree under the rubber trees is appropriately 70-90%, the plant and row spacing of the rubber trees is large, the general plantation density is that the plant and row spacing is 3m * 7m, the land utilization rate is low, if only the rubber trees are planted, water and soil loss is severe, soil fertility is lowered, and the ecological environment is prone to damage; weeds grow easily if only the rubber trees are planted, and management cost is high. According to the method, resource use efficiency of a rubber tree plantation is give full play, comprehensive benefits of the rubber tree plantation are increased, the alpinia oxyphylla seedlings are bred under the grown rubber trees, the land utilization rate of the rubber forest land can be raised, growth of weeds is inhibited, cost of breeding the alpinia oxyphylla seedlings can be lowered, economic benefits are increased, and the method is an effective measure for comprehensively upgrading the rubber and alpinia oxyphylla seedling breeding industries.

The invention discloses an efficient planting method for intercropping of annual triple-cropping wheat, corn and beans. The planting method includes the steps of land preparation, wherein the land subjected to rotary tillage is prepared into a ridged field the width of which is 160 cm; sowing, wherein a combined sowing machine is adopted for completing sowing of the wheat, beans and corn accordingto a line ratio of 6:1:2 in the ridged field, the bandwidth of the wheat and corn is 80 cm, the line spacing of the wheat is 12 cm, the plant spacing of the wheat is 25-45 cm, the line spacing of thecorn is 40 cm, and the plant spacing of the corn is 25-45 cm; staggeredly planting the beans and the corn in lines between the wheat and the corn, wherein the spacing among the beans, the wheat and the corn is 15 cm, and the plant space of the beans is 25-45 cm. According to the provided efficient planting method for intercropping of the annual triple-cropping wheat, corn and beans, the yield isincreased by 10-40% under comparison with monoculture. By means of the method, the land utilization efficiency is improved, biological fertilizer culture of farmland is also achieved, and the method is an intensive, sustainable and efficient planting method.