80 results about "Rice wheat" patented technology

According to the rice cultivation seedbed field surface terrain and cultivation depth integrated measurement method and the rice cultivation seedbed preparation equipment, a rotary cultivator serves as a measurement platform, and a double-antenna GNSS and an IMU are installed on a rack and a dragging plate respectively so as to measure the course angle, the pitch angle and the roll angle of the cultivator and the rotation angle of the dragging plate relative to the rack; establishing a vehicle body coordinate system; establishing a spatial position vector of the deepest soil cutting point of the rotating blade and a carriage profiling point under a vehicle body coordinate system; during rotary tillage operation, a homogeneous coordinate transformation method is adopted to synchronously measure three-dimensional coordinates of the deepest soil cutting point and the profiling point under coordinates of the east, north and sky, and a deepest soil cutting point set and a profiling point set are constructed; combining the two point sets, extracting plane coordinates of the farmland boundary, and arranging plane grid points; estimating the field terrain height of each plane grid point by using the profiling point set; and estimating the tilling bottom layer terrain height of each plane grid point by using the deepest soil point set, and calculating the tilling depth of each grid point. The invention has high efficiency and accuracy, and belongs to the mechanical agricultural equipment manufacturing technology.

The invention relates to the technical field of soil ecological restoration and farmland cultivation management, in particular to an ecological regulation and control method for synergistically reducing compound obstacles of yellow soil rice-oil rotation cropland. The method is implemented by stages according to agricultural time: S1, mixing crushed straw, a composite functional microbial agent, a decomposed organic fertilizer and a calcium magnesium phosphate fertilizer into 0-15cm before rice transplanting; s2, after the rice is harvested, deep scarification is conducted by 20-25 cm, and a ridge culture structure is constructed; s3, interplanting astragalus sinicus after the ridges are built and before the oilseed rape is sown; s4, after the oilseed rape is harvested, the oilseed rape straw and the astragalus smicus are turned and pressed by 20-25 cm, lime is applied, and high water holding capacity is maintained in a short time; and S5, interannual circulation. Through microorganism-structure-nutrient coupling, thin, plate and sticky yellow soil is relieved synergistically, aggregate and air permeability are improved, root growth is promoted, and stable yield is increased.

The invention relates to the field of plant growth regulators, in particular to a conditioner group for improving the grain quality and the rice quality of direct seeding rice and a preparation and use method thereof.The preparation method of a conditioner in the initial heading stage comprises the following steps that 1, 6-benayl aminopurine is dissolved in a diluted hydrochloric acid solution in a assisted mode, and a 6-benayl aminopurine solution is obtained; step 2, adding choline chloride into the solution obtained in the step 1, stirring to obtain a mixed solution, transferring the mixed solution into a volumetric flask, and adjusting the pH value; 3, abscisic acid powder is dissolved with absolute ethyl alcohol, volume metering is carried out after dissolution to form a stock solution, and then PH adjustment is carried out. Two conditioners are included and sprayed in the initial heading stage and the full heading stage respectively, glumous flower degeneration can be reduced, the photosynthetic production capacity of the upper three leaves after flowering can be improved, assimilation substances are promoted to be transferred to grains, especially the filling state of vulnerable grains is improved, and the yield of the seedlings is increased. Finally, the grain number, the maturing rate, the grain weight and the yield are improved, meanwhile, the head rice rate of rice can be improved, and the protein content is reduced, so that the palatability of rice is improved.

The application discloses a kind of Wuchang pure rice instant rice and its double-screw extrusion preparation method, belong to the field of grain deep processing.The instant rice is only raw material with Wuchang rice flower fragrance broken rice, is made into by pure physical process such as smashing, precision moisture loss type, double-screw segmented extrusion gelatinization (sleeve 3-4 area 85~110 DEG C, 5-6 area 40~50 DEG C, 7-8 area 61~108 DEG C, end plate pressure 39.4~65.5 Bar, screw rotation speed 250~340 rpm), granulation, gradient drying shaping), without adding any auxiliary material.Product starch ripening degree is greater than or equal to 95%, boiling water is rehydrated for 5~8 minutes, cooking rice rate is greater than or equal to 2.8:1, finished product moisture content is 9.0%~10.0%, bulk density is 690~830 g / L, grain is neat, after brewing, cooking, frying, grain is distinct, quick-frozen reheating is stable, suitable for whole scene such as family instant food, pre-cooked fried rice, group meal and outdoor meal replacement, realize broken rice high-value utilization.

This invention discloses a honeycomb-structured, micro-pressure-enhanced, and efficacious plant-based soft film powder substrate and its preparation method, belonging to the field of cosmetic technology. The soft film powder substrate, by weight, comprises 15-30 parts sodium alginate, 5-12 parts calcium sulfate, 3-8 parts Tremella fuciformis polysaccharide, 20-40 parts fine-particle-size rice starch, 10-25 parts coarse-particle-size rice flour, 2-6 parts frozen-cell-broken Ophiopogon japonicus extract, and 2-6 parts frozen-cell-broken Polygonatum odoratum extract. This invention constructs a honeycomb porous framework using gradient particle size powders, optimizes the alginate-calcium ion intelligent cross-linking system, and prepares highly active plant extracts using ultra-low temperature freezing and cell wall disruption. It controllably constructs a honeycomb gel network, achieving excellent micro-pressure-enhanced penetration and moisturizing effects, while also possessing excellent thermal stability, cold storage stability, and light stability. This solves the technical problems of existing soft film powders, such as poor film-forming structure, weak penetration-enhancing effect, insufficient stability, and low utilization rate of active ingredients. The formula is mild and safe.

The invention relates to the technical field of biology, and particularly discloses a method for regulating expression of an SH3.1 gene to reduce rice seed shattering and application of the method. The method for reducing the seed shattering of the rice comprises the following steps: inhibiting the expression of an SH3.1 gene in receptor rice to obtain target rice of which the seed shattering is lower than that of the receptor rice. The inventor adopts a CRISPR / Cas9 technology to edit an SH3.1 gene at a fixed point, and knocks out the SH3.1 gene of an introgression line GIL291 of an African cultivated rice IRGC104038 segment by causing frameshift mutation, so that a new rice germplasm with obviously reduced seed shattering is obtained. High seed shattering is an important factor restricting yield increase of African cultivated rice, the rice seed shattering is reduced, high-yield germplasm resources of rice are innovated, and the method has important significance on new variety cultivation, environmental sanitation and grain safety. The method has great application and popularization values.

The application discloses a method for evaluating rice field and dry land crop removal of soil heavy metal flux based on model estimation, relates to the field of agricultural environmental science and technology, and determines the planting mode characteristics and the estimation range of the crop removal of soil heavy metal flux under various planting modes in a target region through a standardized field test, and constructs a standardized crop heavy metal absorption parameter database, wherein the planting modes include single-cropping rice, double-cropping rice, rice-oil rotation, rice-tobacco rotation and leafy dry land crops, and the planting mode characteristics include planting cycles and crop types. Through the construction of the standardized crop heavy metal absorption parameter database, the combination of the planting mode characteristics and the dynamic change data of the heavy metal form of rhizosphere soil, the removal ability of crops to soil heavy metals can be more accurately quantified, meanwhile, the crop heavy metal absorption parameter database integrates the biomass, heavy metal concentration and flux calibration data, eliminates the interference of environmental variation, and forms a reliable heavy metal removal flux estimation range.

The utility model discloses an intelligent irrigation device for wild rice, which belongs to the technical field of agricultural irrigation devices and comprises a water delivery pipeline, a drainage pipeline and electromagnetic valves, the electromagnetic valves are mounted at the input end of the water delivery pipeline and the output end of the drainage pipeline, and an irrigation component is arranged between the water delivery pipeline and the drainage pipeline and comprises a plurality of permeation pipes. A sealing assembly is arranged in the irrigation component, and adjusting sub-assemblies are arranged at the two ends of the sealing assembly. By arranging the irrigation component, irrigation water pushes the driving connector through the check block under the action of water pressure, and the driving connector and the driven connector drive the arc-shaped plate to slide in the sliding groove to the state that the open groove is aligned with the permeation holes, so that the irrigation water can be discharged from the permeation holes and permeates into soil; the effects of saving irrigation water and preventing the seedlings from being washed away are achieved, after irrigation is completed, the closed assembly is reset through the reset spring, the closed part of the arc-shaped plate is aligned with the permeation hole, and the permeation pipe is prevented from being blocked by soil and water in the soil is prevented from permeating into the permeation pipe.

The invention provides a three-season rice seedling raising method for a facility greenhouse vineyard, and belongs to the technical field of planting. According to the method, through the steps of grape field planting, ridging, spraying device arrangement, rice seedling raising time arrangement, temperature management and the like, a composite planting system of three seasons of rice seedlings under grape trellis is constructed for the first time, and the single production function of a greenhouse is upgraded to a multi-element output carrier of fruits and vegetables and grains by accurately matching the grape dormancy period with time windows of early, middle and late rice seedling raising; the traditional limitation that one greenhouse is used for one purpose is broken through, space-time efficient configuration of land resources is achieved, and a brand new solution is provided for multifunctional utilization of facility agriculture. According to the method for the three-season rice seedlings under the grape trellis, the land utilization rate and economic benefits are improved, idle space is converted into synergistic space, a sustainable practical path is provided for income increase of farmers, and the method has important demonstration significance for promoting agricultural green and high-quality development.

The invention relates to the technical field of food processing, in particular to a preparation method of rice straw and corncob instant rice. Comprising the following steps: rice straw treatment: crushing, removing impurities, adding a decomposition agent, adding urea to adjust the carbon nitrogen ratio, spraying water, and composting and fermenting at the temperature of 60-65 DEG C; corncob treatment: crushing, adding water to immerse corncobs, carrying out water pretreatment, heating and soaking, and removing impurities; mixing the treated rice straws, corncobs and rice according to a ratio, adding water to soak for 30-60 minutes, washing until the water is clear, adding water according to a rice-water ratio of 1: (1.2-1.8), steaming for 30-60 minutes, and braising for 10-20 minutes; and rehydration treatment: taking the cooked rice grains, putting the cooked rice grains in boiling water, covering the boiled water, and treating the cooked rice grains by a twin-screw extrusion method for 20-40 minutes. According to the invention, the rice straws and the corncobs are used as agricultural wastes, the wastes are turned into wealth through technical transformation, and the production cost is reduced.

This invention discloses a rapeseed seed coating agent and a method for mechanized transplanting using dual-purpose rice-oilseed trays, relating to the field of agricultural seedling technology. The rapeseed seed coating agent comprises the following components: a carbon dioxide trap, a compound fungicide, a plant growth regulator, and a solvent. The mechanized transplanting method for dual-purpose rice-oilseed trays includes seed drying, disinfection, substrate preparation, tray sowing, darkening treatment, and seedling management. This invention optimizes the concentration, ratio, and frequency of seed coating agent components with those of seedling fertilization, achieving robust rapeseed seedling cultivation. It is suitable for rice and rapeseed seedling cultivation in rice-oilseed rotation areas, solving the problem of incompatible transplanting equipment for rice and rapeseed mechanized transplanting. It has advantages such as low seedling cost, simple process, high qualification rate, and suitability for large-scale production.

The invention relates to the technical field of fertilizing machines and tools, and provides a rice-oil rotation biochar variable rate fertilizing device and a rice-oil rotation biochar variable rate fertilizing method. The rice and oil rotation biochar variable rate fertilization device comprises a fertilization box, a first partition plate and a second partition plate divide the inner space of the fertilization box into a first cavity, a second cavity and a third cavity, a first baffle is rotationally arranged on the side wall of the first cavity, and a second baffle is rotationally arranged on the side wall of the second cavity; a third baffle is rotationally arranged on the side wall of the third cavity, a first connecting rod is connected between the first baffle and the second baffle, and a second connecting rod is connected between the second baffle and the third baffle. According to the rice-oil tanker biochar variable rate fertilization device provided by the invention, the angles of the first baffle, the second baffle and the third baffle can be adjusted at the same time only by adjusting any one of the first baffle, the second baffle and the third baffle, so that the flows in the three chambers can be controlled at the same time, and the mixing proportion of different materials during fertilization can be accurately controlled.

A method for detecting cutting width, cutting height, and crop density in a rice-wheat combine harvester is proposed. This method utilizes a trained semantic segmentation model, UANet, to obtain unharvested areas. The world coordinates of pixels in the unharvested areas are obtained through coordinate transformation between pixel coordinates and the world coordinate system. The actual cutting width is then calculated, and the plant height data for the selected plant height measurement area is obtained. After random downsampling and K-means clustering of the plant height data, the maximum average value within the maximum value interval is calculated as the actual plant height. Combined with the header height, the actual cutting height is obtained. By inputting rice and wheat ear images and density detection boxes into a trained improved YOLOv5 model, the density of rice and wheat ears can be obtained from the number of ears in the density detection boxes. Ultimately, this method ensures the accuracy of cutting width, cutting height, and crop density detection.

The invention belongs to the technical field of rice cultivation, and particularly relates to a black pearl rice cultivation method which comprises the following steps: S1, seed selection: hybridizing rice in Dabie Mountain of Hubei province; s2, breeding: performing detoxification treatment on the seeds, drying in the sun for 1-2 days, selecting full seeds with high maturity, and cleaning the seeds twice with saline water; land with fertile soil is selected, it is ensured that all land parcels can be planted in a unified mode, and watering is convenient; s4, sufficient base fertilizer application, wherein operation is conducted through a fertilizer sowing machine; s5, ploughing: performing fine preparation and raking, making the upper part virtual and the lower part solid, and performing fine soil preparation; s6, sowing: sowing uniformly by using a rotary tillage drill seeder; s7, watering: watering within one day after sowing; s8, closed weeding, wherein weeding closed liquid medicine is sprayed on the second day after watering; the black pearl rice cultivated through the method is high in yield, good in rice taste and high in quality, the cultivation method is convenient to operate, the breeding work intensity is relieved, the breeding work efficiency is improved, and the method has important significance in accelerating the new variety cultivation process.

The invention provides a'rice + 'rotation farmland methane emission inhibitor as well as a preparation method and application thereof, and belongs to the technical field of environmental protection, in particular to the preparation method of the'rice +' rotation farmland methane emission inhibitor, which comprises the following steps: S1, recycling a used spontaneous heating patch, taking out contents, and grinding the contents into powder; s2, performing ultrasonic water washing on the powder obtained in the step S1 to remove salt and impurities; s3, soaking the washed powder in the step S2 by using a hydrogen peroxide solution to obtain an oxidized material; and S4, grinding the oxidized material obtained in the step S3 to obtain the methane emission inhibitor. The methane emission inhibitor provided by the invention can effectively reduce the greenhouse gas emission of rice + crop rotation soil, is simple in preparation method and low in raw material cost, and has a great application prospect.

1. Name of the product in this design: Food Can (Rice, Red Bean, and Corn Juice). 2. Purpose of this design: This design is used to hold liquids. 3. The key design point of this design product lies in the combination of shape and pattern. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

This invention relates to the field of saline-alkali land improvement machinery technology, and discloses a rotary tiller for washing salt in saline-alkali land used in rice-oilse rotation. The tiller includes a main frame, with drive boxes fixedly connected to both sides of the main frame. A motor is housed within each drive box. A shaft support opening is provided on the inner side of the drive box, through which a main shaft is movably mounted. A passive lever is fixedly connected to one side of each end of the main shaft. Drive gears are movably sleeved at both ends of the main shaft, with active levers fixedly connected to the inner side of each drive gear. Rotary tillage blades are evenly arranged around the periphery of the middle section of the main shaft. A material box is fixedly installed on the top of the main frame. This invention, by adding a material box to the main frame and creating a cavity and material distribution port within the main shaft that communicate with the material box, allows for the simultaneous mixing of soil amendment materials into the soil during deep tilling of saline-alkali land. This enhances the soil's salt-holding capacity after deep tilling and washing, breaking the vicious cycle of salt accumulation at the top and stagnation at the bottom, and effectively improving the soil structure of saline-alkali land.

The utility model provides a desilting device for rice and fish planting, which comprises a planting pool and planting plates, the planting plates are planted on the surface of the planting pool, a partition plate is arranged at the bottom of the planting pool, a water injection pipe is arranged on a space layer at the partition position of the partition plate, and a high-pressure spray head is installed on the water injection pipe. According to the device, the motor is started and drives the auger to rotate, so that the auger drives sludge at the bottom of the planting pool to move, the auger conveys the sludge to the inclined plate, the sludge is flushed with water through the flushing spray head, the sludge is continuously conveyed to the dredging pump, the dredging pump is started, and the sludge is conveyed to the planting pool. According to the rice field planting device, the sludge accumulated at the bottom of the planting rice field can be intelligently pumped out, and the sludge is pumped and stored, so that the situation that the sludge at the bottom of the rice field planting device is gradually accumulated and is inconvenient to clean is avoided.

The embodiment of the present application provides a method, system and equipment for intelligent assessment of rice blast disease grade and initial screening of disease resistance, the method comprising: S1: collecting image data of wild rice leaves infected with rice blast, performing instance segmentation on the image data by improving the YOLOv8‑Seg segmentation model, and obtaining segmentation results, wherein the improvement measures include: GhostHierarchicalNet backbone network, CAHSFPN neck network and LSDECS Head segmentation head; S2: based on the segmentation results, counting the number of pixels and their proportion of diseased leaves and diseased areas, and combining the disease resistance identification technical regulations to obtain disease grade assessment results; S3: based on the disease grade assessment results repeated multiple times, screening wild rice materials with strong disease resistance. This method can effectively improve the accuracy and efficiency of crop disease assessment, provide support for large-scale wild rice disease resistance screening, and thus promote the development of rice blast resistance breeding.

The present application belongs to the field of crop cultivation technology, and relates to a rice-rice-wheat one-year three-crop cultivation method. The cultivation method comprises: (1) early rice cultivation: early rice is sowed in early to middle February, early rice season substrate is applied when land preparation, and early rice is harvested in late June to early July; (2) late rice cultivation: after early rice is harvested, early rice straw is returned to field in full amount and late rice season substrate is applied, then land preparation is carried out to mix early rice straw and late rice season substrate into mud evenly, late rice is sowed after land preparation, and late rice is harvested in late October to early November; (3) wheat cultivation: wheat is sowed in early to middle November after late rice is harvested, land preparation is carried out by shallow rotary tillage with a depth of 10-12 cm, and wheat season substrate is mixed into the sowing layer, and wheat is harvested in early to middle March of the next year. The present application solves the double problems of frequent diseases and soil compaction in the rice-rice-wheat one-year three-crop system.

The invention provides an agricultural rice planting and cultivating device, and relates to the field of rice cultivation, the agricultural rice planting and cultivating device comprises a cultivation box, a liquid outlet pipe and an impeller mechanism are arranged in the cultivation box, a support is arranged on the liquid outlet pipe, a motor is arranged on the outer side of the cultivation box, the motor is in transmission connection with the support, the impeller mechanism comprises a shell mechanism and an impeller, the shell mechanism is connected with the support, and the shell mechanism is communicated with the liquid outlet pipe; the impeller is arranged in the shell mechanism; two key bars are rotationally arranged on the cultivation box, the key bars are axially and movably connected with the shell mechanism and the impeller, and the two key bars are in belt transmission connection; a rice tray is arranged in the cultivation box, a touch rod floats in the rice tray, a switch is arranged on the rice tray and is opposite to the touch rod, the switch is electrically connected with a motor, and a floating plate is arranged in a pipe body in a floating mode, makes dynamic contact with the switch, detects the water level, controls starting and stopping of the motor and supplies water and cuts off water. And the sleeve shell reversely rotates along with the impeller, so that the water absorbing and spraying efficiency is improved.

The invention relates to the technical field of agricultural soil improvement, and particularly discloses a straw and green manure synergistic returning method in a fallow period in a rice-vegetable rotation area, which takes land to nourish land as a core, and aims to solve the problems of rice-vegetable rotation soil degradation and short fallow period in a hot area. Through precise time sequence connection, cooperative turning and pressing in the optimal period (from the full blooming period to the initial pod period of the green manure) and an original dry tillage and wet retting decomposition process (sunning upturned soil for 2-3 days after turning and then irrigating for field retting for 7-10 days), efficient cooperative utilization and rapid decomposition of the straw and the green manure in the temporary fallow period are achieved. According to the method, an endogenous-driven land cultivation mode is constructed, soil organic matter can be remarkably increased (0.2%-0.4% can be increased continuously in three years), the soil structure is improved, acidification is corrected, application of chemical nitrogen fertilizer of next-stubble vegetables is reduced by 30%-50%, a complete'land cultivation-land cultivation 'ecological and benefit closed loop is formed, the problem that soil is unbalanced in use and cultivation under high-intensity cultivation is effectively solved, and the method is suitable for large-scale popularization and application. The method has remarkable ecological, economic and social benefits.

The results of the first and second grain classifications for the first and second periods in a given field can be compared from the perspective of the yield difference. [Solution] The grain discrimination system comprises a grain discrimination machine that classifies grains in each field into multiple grain states: damaged rice, discolored grains, immature rice, and whole grains; a state classification unit that classifies the weight or proportion of the multiple grain states for each field over multiple periods for multiple fields; a storage device that stores the grain classification results from the state classification unit separately for each field over the multiple periods; and a display device that displays a comparison screen that shows the first and second grain classification results, which indicate the weight or proportion of the multiple grain states for a predetermined field input into the field input unit during the first and second periods input into the period input unit, for comparison on the comparison screen, which displays the first and second harvest yields for each predetermined field during the first and second periods, and a harvest yield difference value, expressed as negative or non-negative, obtained by subtracting the first harvest yield from the second harvest yield for the same field.

This invention relates to the field of rice-oilseed rape rotation technology, specifically to a method for achieving year-round increased yield and efficiency of rice and oilseed rape through soil fertilization during the rapeseed season. The invention provides a method for achieving year-round increased yield and efficiency of rice and oilseed rape through soil fertilization during the rapeseed season, comprising: Rapeseed season: Before rapeseed sowing, the land is tilled and the previous crop straw is rotary tilled into the soil; fertilization strips are set up before sowing, and base fertilizer is applied using a deep strip application method, combined with row sowing of rapeseed; Rice season: After rapeseed harvest and before rice transplanting, the land is rotary tilled and prepared, rapeseed straw and applied base fertilizer are rotary tilled into the soil, and rice seedlings are transplanted; the transplanting density is 20-40 seedlings / m². 2 This invention utilizes a combined soil fertilization method of deep plowing and strip deep application after tilling during the rapeseed season, while controlling the transplanting density during the rice season to 20-40 clumps / m². 2 This will enable the development of a complete set of rice-oilseed rotation methods, achieving a synergistic improvement in annual yield and fertilizer utilization efficiency; and will also enhance the frost resistance of rapeseed and the rice quality of rice.

The utility model provides a rice planting and transporting device, which belongs to the field of rice planting and transporting, and comprises a floating plate and a floating seat arranged on the floating plate, a placing groove is arranged at the top of the floating seat, an anti-running rope is arranged on the side wall of the floating seat, and a hook is arranged at one end of the anti-running rope. The blocking mechanism can separate the rice seedlings; the splicing mechanisms are arranged on the left side wall and the right side wall of the floating plate and can splice the multiple floating plates together for transportation, two or more floating plates can be spliced through the splicing mechanisms, and therefore the area of the whole spliced floating plate can be enlarged to 2-3 times that of an original single body, the single-time seedling transportation amount is remarkably increased, and the seedling transportation efficiency is improved. The large-area planting requirement is met, and the transportation efficiency is improved.

1. Name of the product in this design: Packaging Box (Rice Bean and Corn Juice). 2. Purpose of this design product: packaging box for products. 3. The key design features of this product are the combination of shape and pattern. 4. The image or photograph that best illustrates the design's key points: a 3D model.

A rice-fish-water spinach co-culture system and a field management method therefor. A plurality of fish ponds are provided in a rice field, the rice field being planted with rice, and fishes and water spinach being grown in the fish ponds, such that a rice-fish-water spinach co-culture system is formed in which rice and water spinach are intercropped on a horizontal structure, and rice, water spinach and fish breeding are combined on a vertical structure. The system can reduce the risk of the agricultural non-point source pollution of water bodies, improves the nutrient recycling efficiency of the system, produces diversified agricultural products, and protects the ecological environment of rice fields.

The invention relates to the technical field of agricultural planting. The invention provides a winter rape straw mulching no-tillage direct seeding planting method which comprises the following steps: (1) collecting straws on the earth surface of a to-be-planted area, ditching on the earth surface of the to-be-planted area, and constructing a planting bed; (2) precisely sowing on the planting bed, and covering the straw collected in the step (1) on the surface. The three-layer structure of the subsoil layer, the seed layer and the straw covering layer is innovatively constructed, and the problem of'high seedlings' caused by seed suspension in the traditional straw returning mode is effectively solved. According to the method, the straw covering layer is used for preserving heat and soil moisture and inhibiting weed and bird damage, meanwhile, the subsoil layer is used for ensuring that seed implantation is stable, the emergence rate and the overwintering survival rate of the oilseed rape are remarkably increased, and cooperation of straw resource utilization and high yield and high efficiency of the oilseed rape in the rice-oil rotation cropping mode is achieved.

The invention provides a first season rice harvesting stubble height and ratooning rice yield prediction method, and relates to the technical field of agricultural planting. The method comprises four core modules including first rice variety whole growth period selection, first-season rice harvesting stubble height determination, second-crop rice effective ear calculation and ratooning rice yield prediction, wherein the whole growth period of the first rice variety is determined through a formula (1) and a formula (2) in combination with regional climate characteristics, and the influence of cold dew wind is avoided; a 6-9-point sampling method is adopted to observe the lengths of base nodes and inverted 1-4 nodes of rice plants and axillary bud vitality, empirical values of fixed heights are abandoned, and the heights of low stubbles, medium stubbles and high stubbles are scientifically divided; on the basis of the first rice effective ears, the axillary bud ear percentage and the harvester pressure loss correction rate, second-crop rice effective ears are calculated through a series of formulas (4); and predicting the yield of ratooning rice by using a series of formulas (5) in combination with parameters such as the grain setting rate and the maturing rate. The method realizes whole-process mechanized dry direct seeding and ratooning rice cultivation, can increase the annual yield per unit area, saves the cost, and is suitable for large-scale planting of ratooning rice.