1621results about "Rice cultivation" patented technology

The invention relates to the technical field of sowing methods, and provides a full-amount straw returning sowing method for high rice yield and rice field emission reduction, which can realize the uniform penetration rate of straws to more than 90%, promote the increase of oxygen content in a plough layer and rhizosphere, effectively promote the oxidation of rice field methane, reduce methane emission and relieve the poison of reducing substances to rice roots. The method effectively relieves the problems of early-stage runt seedlings and later-stage withering of rice under straw returning, saves cost, realizes rice yield increase, and comprises the following steps: 7-10 days before rice harvesting, draining water in a rice field, and adopting a harvester with a straw crushing function and a throwing device for harvesting during harvesting, the method comprises the following steps: chopping straws, uniformly scattering the chopped straws in a field, turning over as soon as possible after rice is harvested, soaking the field in shallow water of 1-2 cm on the field surface for half a day before rice transplanting, performing rotary-tillage-free soil preparation and stubble burying, selecting a rice variety suitable for local climate and soil conditions for seeding, and performing field management and strengthening field disease and pest monitoring after seeding.

The invention discloses an intelligent fish and rice symbiosis ecological control system and method based on the Internet of Things. The system comprises a fish breeding area, a rice irrigation area and a circulating water channel arranged between the fish breeding area and the rice irrigation area. The central control platform is used for collecting a dissolved oxygen (DO) value and a pH value in a water body in real time through a plurality of water quality sensors configured in the system; the dissolved oxygen DO value and the pH value are water quality data; and analyzing the dissolved oxygen DO value, generating a water quality regulation and control instruction, and regulating the oxygenation equipment according to the water quality regulation and control instruction. The automatic buffering agent adding device is used for automatically adding a buffering agent according to an instruction sent by the central control platform; the oxygenation equipment comprises an aeration device and is used for adjusting the content of dissolved oxygen in the water body. According to the intelligent fish and rice symbiosis ecological control system based on the Internet of Things, the fish culture area, the rice irrigation area and the circulating water channel are integrated, effective management and control of the fish and rice symbiosis ecological system are achieved, the water body environment is optimized, and the symbiosis benefits of fishes and rice are improved.

The invention discloses a methylobacterium strain and application thereof, the methylobacterium strain is methylobacterium asperum DSD, and the preservation number of the methylobacterium strain in the China Center for Type Culture Collection (CCTCC) is CCTCC NO: M2023445. The methylobacterium strain disclosed by the invention can be applied to rice planting, the biomass of rice can be improved in a foliage spraying or root application mode, and meanwhile, the cadmium content of the overground part and root system of the rice can be reduced. The operation method is simple and easy to implement, the selected methylobacterium strain has the advantages of being low in cost, easy to obtain, environmentally friendly and the like, and the technical problem that the effect of microorganisms on the aspects of cadmium reduction and growth promotion of rice is single is solved to a certain extent.

Disclosed is a rice and wheat nitrogen nutrition multispectral diagnosis method for precise fertilization by unmanned aerial vehicles (UAVs), including: step 1, acquiring multispectral UAV remote sensing images and collecting agronomic parameters of rice and wheat, and establishing a nitrogen nutrition spectral diagnosis model; and step 2, calculating a critical nitrogen concentration in aboveground parts of rice and wheat based on a critical nitrogen concentration dilution model for amount of dry matter, and further obtaining a critical nitrogen uptake; calculating an actual nitrogen uptake in the aboveground parts of rice and wheat based on the nitrogen nutrition spectral diagnosis model; and obtaining a recommended nitrogen topdressing amount for rice and wheat during corresponding stages based on the critical nitrogen uptake and the actual nitrogen uptake. The present disclosure ensures stable yields of rice and wheat while reducing input of chemical fertilizers and labor, presenting a promising application prospect.

The invention provides a rice endophyte for promoting rice growth and reducing cadmium as well as a preparation method and application of the rice endophyte, and relates to the field of environmental microbiology and agricultural microorganisms. The rice endophyte is stenotrophomonas, is named as Stentrophomonas sp.R5, is preserved in the China Center for Type Culture Collection, the address is Wuhan University, Wuhan, China, the postcode is 430072, the preservation number is CCTCC NO: M 20231758, and the preservation date is September 20, 2023. The rice endophyte not only has the capabilities of producing IAA, dissolving phosphorus, producing siderophores and the like for promoting the growth and development of rice, but also has an efficient inhibition effect on absorption and transportation of cadmium in the rice, particularly, the cadmium reduction amplitude of mature rice grains reaches up to 57.69%, and the rice endophyte has little influence on microbial communities in a soil environment, and has a good application prospect. Excessive interference is not caused, and conversion of available nutrients in the soil is promoted.

The invention discloses application of GGTI298 in prevention and control of rice blast, and belongs to the technical field of rice blast prevention and control. According to the technical scheme, the novel medical application of the GGTI298 is disclosed, and the GGTI298 has good antibacterial activity on magnaporthe oryzae and can inhibit conidia germination and appressorium formation of the magnaporthe oryzae so as to influence pathogenicity. The GGTI298 has a prospect of preventing and treating magnaporthe oryzae infection, and a reference basis is provided for development of antibacterial drugs based on a GGTI298 pilot structure.

The invention provides an agriculture and forestry wet compound system and a comprehensive synergistic method for a rice farming aquatic product area. The agriculture and forestry wet compound system comprises an ecological rice field area, an ecological pond area, a forest and wet compound area, an aquatic product culture area and an ecological hydroponic area. The ecological paddy field area is communicated with the ecological pond area through a pipeline, the ecological pond area is communicated with the forest wetting composite area through a pipeline, the forest wetting composite area is communicated with the aquaculture area through a pipeline, and the aquaculture area is communicated with the ecological hydroponic area through a pipeline. Incoming water containing bottom mud, residual feed and biological debris in the ecological hydroponic area is communicated with the ecological rice field area through a pipeline. Based on different nutrient requirements of each unit, agriculture and forestry wet compounding is taken as a core, and the opposite relationship between water, fertilizer and bait requirements of a rice field and a culture pond and tail water pollution treatment is converted into a coupled adaptive multi-element cooperative relationship.

The invention discloses a composite foliar barrier and application thereof in reducing cadmium accumulation in brown rice. The composite foliar barrier comprises: NaHS concentration of 10-20 μmol / L; melatonin concentration of 20-30 μmol / L; taurine concentration of 0.1-0.5 g / L; surfactant concentration of 0.1-0.3 g / L; and the remainder of water. The composite foliar barrier is sprayed in the tillering stage, heading stage and filling stage of rice, and the spraying amount per mu is 30-50 kg each time. The invention utilizes the synergistic effect of NaHS, melatonin and taurine, adopts surfactant to increase the spreading area, and jointly greatly improves the cadmium reduction effect of brown rice, and the cadmium reduction efficiency can reach more than 85%. The foliar barrier of the invention has simple components, is easy to operate, and has outstanding effect.

The invention provides a water surface floating rice nutrition matrix and a preparation method thereof, the water surface floating rice nutrition matrix is prepared from the following components by mass: 80 parts of crushed soil and 20 parts of a planting matrix, a seedling strengthening agent is applied according to the total amount of the crushed soil and the planting matrix, the usage amount of the seedling strengthening agent is 0.1%, a base fertilizer is applied, and the base fertilizer comprises a compound fertilizer, an organic fertilizer, urea and a slow release fertilizer. According to the invention, crushed soil, a planting matrix, a seedling strengthening agent and a base fertilizer are proportioned, and then water is added for standing and culturing for one day, so that nutrients in the matrix react in a balanced manner, and the nutrient matrix suitable for the growth of floating rice is prepared. The nutrient medium for the water surface floating rice and the preparation method thereof are suitable for the floating rice, one-time fertilization in the early stage and no or less topdressing in the later stage can be achieved under the condition that the requirement for supporting the rice is met, the purposes of saving time and labor are achieved, and normal growth of the rice on the water surface is guaranteed.

The invention discloses a simplified rice nitrogen fertilizer dosage recommendation method based on a nitrogen balance standard, and relates to the technical field of agricultural resource environment. According to the rice nitrogen fertilizer dosage recommendation method based on the nitrogen balance standard, the nitrogen fertilizer dosage can be recommended only by knowing the rice yield and the soil fertility grade, the surplus of nitrogen in soil can be reduced to the maximum extent on the basis of ensuring the crop yield, the environmental loss of active nitrogen is further reduced, and the economic benefit is improved. Therefore, high-yield, high-efficiency, sustainable and healthy development of agriculture is promoted.

The invention provides a method for preparing carbon quantum dot reinforced subcritical artificial humic acid and applying the carbon quantum dot reinforced subcritical artificial humic acid to a rice field, which comprises the following steps: collecting organic wastes, and drying, grinding and sieving the organic wastes to obtain pretreated raw materials; the preparation method comprises the following steps: mixing pretreated raw materials with water, reacting in a hydrothermal carbonization system at 200-280 DEG C for 1-3 hours, modifying through acid-base pretreatment, adjusting a reaction medium or an additive, and naturally cooling to obtain a natural substance subjected to hydrothermal carbonization; carrying out solid-liquid separation on the natural substance subjected to hydrothermal carbonization by using a 100-mesh coarse filter screen to obtain solid-phase hydrothermal carbon and liquid-phase artificial humic acid; carrying out purification treatment on the liquid-phase artificial humic acid for 48 hours by using a dialysis bag to obtain carbon quantum dots and characterizing the carbon quantum dots; the carbon quantum dot reinforced subcritical artificial humic acid is applied to a rice field, and is additionally applied in a fertilization period. Compared with a traditional composting technology, the scheme has the advantages that the carbon conversion rate is increased by 2-3 times, the soil fertility can be improved, and the rice yield is increased.

The invention discloses a water and fertilizer management method for transplanted high-yield indica type two-line hybrid rice, and belongs to the technical field of rice cultivation. Comprising the following steps: (1) applying citric acid chelated calcium magnesium phosphate fertilizer to soil before transplanting; (2) applying coated controlled-release urea and a silicon-zinc fertilizer on the third day after transplanting; (3) when the tiller number reaches 2650,000-2750,000 plants / hm < 2 >, starting intermittent light field drying for three times, and deeply applying potassium magnesium sulphate before field drying; (4) laterally and deeply applying urea and a boron-humic acid chelate when tips of two inverted leaves are exposed; (5) spraying an aqueous solution in a full heading stage, wherein the aqueous solution comprises monopotassium phosphate, chelated zinc and brassinolide. Through staged precise fertilization, special chelating / controlled release fertilizer and water and fertilizer-field drying cooperation, the method has the advantages that the fertilizer utilization rate is increased, the nutritional requirements of rice in each growth period are precisely matched, and water and fertilizer cooperative management is optimized.

The invention discloses a biological control method for rice panicle blight, and belongs to the technical field of agricultural pest control. The method comprises the following steps that healthy and full seeds are selected, and before sowing, the disinfected seeds are soaked in a solution containing bacillus subtilis for pretreatment; the method comprises the following steps: before rice transplanting, applying a mixed bacterial agent 1 containing trichoderma harzianum, bacillus subtilis, bacillus velezensis and bacillus pumilus bacterial liquid into soil; in the booting stage and the pustulation stage of the rice, a mixed bacterial agent 2 of bacillus subtilis and bacillus velezensis is sprayed to the plants respectively. The biological control method adopted by the invention is green and environment-friendly, and does not cause pollution to the environment and agricultural products; the selected microbial strains can effectively inhibit the growth and reproduction of the rice panicle blight germs, so that the occurrence degree of diseases is reduced; after the biological control method is used for a long time, the soil micro-ecological environment can be improved, and the autoimmunity of the rice can be improved.

The invention discloses a fertilization recommendation method combined with a rice seedling raising fertilizer carrying technology in the technical field of agricultural production. The fertilization recommendation method comprises the following steps: S1, acquiring geology and seedling raising states; s2, presetting rice growth requirements; s3, calculating to obtain an additional nutrient amount; s4, dividing the growth cycle of the rice; s5, recommending the fertilization amount according to stages; according to the method, nutrient supply of seedling raising fertilizer is brought into a whole-growth-period fertilization plan, and accurate matching is achieved; on the premise that the yield is not affected, the fertilizing amount in the early and whole growth periods of rice is remarkably reduced, and the fertilizer utilization rate is increased; through dynamic matching of the early-stage fertilizer loading and supplying amount and the middle and later-stage fertilizer needing amount, resource waste caused by excessive fertilization is avoided, and the fertilizer cost is reduced; the nutrient proportion is scientifically distributed according to the nutrient absorption efficiency of each stage, and the fertilizer utilization rate is increased; the final yield can be improved; soil fertility indexes and historical data are combined, the profit and loss trend of soil nutrients is recognized, and cyclic utilization of the soil nutrients is achieved through dynamic matching of the sustained and controlled release fertilizer and the organic fertilizer.

Provided in the present disclosure are a method for increasing the biomass, yield and nitrogen utilization rate of crops, and an iron-rich compound fertilizer. The method comprises: supplementing and applying an iron fertilizer to a crop, wherein the microelement iron in the iron fertilizer can significantly promote the absorption and assimilation of the mineral nutrition of a nitrogen-containing chemical fertilizer by the crop to which the fertilizer is applied, thereby producing a synergistic effect, and the amount of the iron fertilizer applied to the crop is 0.37-0.74 kg per Chinese acre. Moreover, by means of the method provided by the present disclosure, the tillering number and the nutrient absorption and utilization of the crop can be improved after fertilization according to a method for field crops and normal field management of crops, thereby effectively improving the biomass, yield and nitrogen utilization rate of the crop.

The invention relates to the technical field of ratooning rice planting, and particularly discloses a ratooning rice high-yield harvester and a planting method thereof.The method comprises the steps that the two ends of a rice field are filled with soil to form bed surface heightening areas; rice seedling planting is conducted through the modified wide-narrow row rice transplanter, and rice seedlings are transplanted in the mode that seven rows are planted at the same time; drying the field before the first season rice is harvested until the soil water content of the middle bed surface of the rice field is reduced to 40-45% and the soil water content of the bed surface heightening area is reduced to 25-30%, and then starting machine harvesting; a ratooning rice high-yield harvester is adopted for machine harvesting, the telescopic crawler belt keeps the maximum grounding length during straight running, and the telescopic crawler belt retracts to the minimum grounding length when the machine turns around in a bed surface heightening area; according to the planting method, on the premise that excessive field drying and machine tool sinking are avoided, the rolling area of the crawler belt on rice stubbles in the machine tool turning-around process is minimum, and the yield of ratooning rice is increased.

The invention relates to the technical field of rice seedling raising substrates, and discloses a water-saving seedling strengthening substrate for rice seedling raising, which is prepared from the following raw materials in parts by mass: 40 to 50 parts of peat soil, 20 to 25 parts of vermiculite, 15 to 25 parts of yellow mud, 8 to 10 parts of plant fiber leavening, 0.01 to 0.015 part of uniconazole and 1.85 to 1.99 parts of microbial agent. According to the scheme, the peat soil, the vermiculite and the yellow mud are used in a combined mode to obtain the matrix, the three components have a synergistic effect, the high water-holding capacity is achieved, the air permeability and the fertilizer-holding effect of the water-holding matrix can be effectively improved, and the quality of seedlings obtained through cultivation is remarkably improved.

The invention discloses pseudomonas chlororaphis S7-24 for antagonizing xanthomonas oryzae and application of the pseudomonas chlororaphis S7-24, and belongs to the technical field of microorganisms. The pseudomonas chlororaphis S7-24 is preserved in the China Center for Type Culture Collection on November 12, 2025, and the preservation number of the pseudomonas chlororaphis S7-24 is CCTCC NO: M 20252533. The pseudomonas chlororaphis S7-24 provided by the invention is a newly found pseudomonas biocontrol resource, and verification shows that the strain S7-24 has relatively high antagonistic activity on rice bacterial blight and rice bacterial streak, and can be used for effectively preventing and treating rice bacterial blight and rice bacterial streak. The pseudomonas chlororaphis S7-24 provided by the invention is used for preventing and treating rice bacterial leaf blight and rice bacterial leaf streak, can reduce the use amount of chemical pesticides, ensures grain safety, and has better economic and ecological benefits.

The invention belongs to the technical field of agriculture, and particularly relates to a method for promoting rice field carbon sequestration and emission reduction and improving the rice yield through deep soil air injection and oxygenation. According to the method provided by the invention, aiming at paddy field cultivation and tillage environment, paddy field methane emission characteristics and paddy field organic carbon library management design, a soil deep gas injection device is combined with paddy field production management, and soil oxygen content is increased to a corresponding threshold range through soil deep gas injection in combination with a soil organic carbon content background; the organic carbon content of rice field soil and the rice yield are increased while the methane emission of the rice field is reduced.

The invention discloses a ternary sand-fixing water-retaining seepage-proofing fertility-increasing vegetation restoration and reconstruction method, and relates to the technical field of operation methods of sand ecological restoration, and the method comprises the following steps: S1, laying a layer of seepage-proofing material on the surface layer of a target planting area to reduce water seepage and enhance soil water-retaining capacity; s2, mixing a water-retaining agent with local sandy soil to form a water storage layer, and paving the water storage layer on the surface of the impermeable material to ensure that the plant root system can obtain water for a long time; s3, applying an organic fertility intensifier to the water storage layer to improve the organic matter content and nutrient supply capacity of the soil; s4, appropriate plants are selected for planting, after planting, the vegetation growth condition and the soil humidity are checked regularly, a water-retaining agent and an organic fertility increasing agent are supplemented in time according to needs, and it is ensured that the vegetation can grow healthily. The planting method provided by the invention has a remarkable yield increasing effect, the survival rate of plants can be effectively improved, and the effect of fixing sand for a long time is achieved.

The invention provides a high-yield cultivation method for rice-morchella esculenta crop rotation, which specifically comprises the following steps: step 1, remaining previous rice stubbles, and turning over the rice stubbles into soil; step 2, laying a fungus bed substrate on a furrow surface and sowing; step 3, spraying a bacterium-promoting nutrient solution and a protective agent; step 4, after the morchella esculenta is harvested, turning over the fungus bed substrate into soil and applying a base fertilizer; 5, rice is transplanted, and tillering fertilizer, fish protein fermentation liquor and leaf fertilizer are applied; step 6, spraying an insecticide; step 7, harvesting the rice and remaining stubbles, and continuing planting the morchella esculenta; according to the method, the problems of nutrition imbalance, chemical residues, fertilizer efficiency lag and the like in the existing crop rotation technology are solved one by one through the steps of systematic optimization of a fungus bed substrate, nutrition management, base fertilizer preparation and the like.

The invention belongs to the technical field of biological prevention and control, and particularly relates to a Burkholderia paragallinarum D15 and application of the Burkholderia paragallinarum D15. The Burkholderia parakholderia sp. D15 is preserved in China General Microbiological Culture Collection Center (CGMCC) on November 25, 2024, the address is No.3, No.1 yard, Beichen West Road, Chaoyang District, Beijing, and the preservation number is CGMCC NO. 1.61962. The Burkholderia parakholderia sp. D15 has the advantages that the Burkholderia parakholderia sp. According to the invention, a multifunctional strain Burkholderia paragallinarum D15 is separated from the rock wall of Danxia red rock, and the Burkholderia paragallinarum D15 has a relatively good antagonistic effect on most plant pathogens and has a relatively strong bacteriostatic effect on xanthomonas oryzae Xoo causing rice bacterial blight; the compound also has a relatively strong bacteriostatic effect on other pathogenic bacteria causing crop diseases, such as rice sheath blight disease, rice blast, fusarium graminearum, sclerotium rolfsii and ralstonia solanacearum, and lays a foundation for prevention and treatment of rice bacterial blight and development of related biological preparations.

The invention provides application of small peptides in preventing and treating plant diseases and promoting plant growth. The structural formula of the small peptide is shown in the specification. Experimental results show that the small peptide shown in the formula A has the effects of improving the disease resistance of plants and regulating the growth of the plants. The small peptide not only can be used as a plant immune resistance inducer at low concentration to improve the immunocompetence of plants for resisting pathogen invasion, but also can promote plant growth, and has a good application prospect. R1-R2-beta-Ala-Trp-Gly-NH2 Formula A

The invention relates to the technical field of pesticides, and discloses a weeding composition for preventing and controlling alternanthera philoxeroides in a paddy field as well as a preparation method and application of the weeding composition. The weeding composition is prepared from three main effective components and an auxiliary agent, and the mass percent of each component is as follows: 6.00 to 8.00 percent of fluroxypyr, 14.00 to 18.00 percent of prometryn, 40.00 to 60.00 percent of vanillic acid, 5.00 to 13.00 percent of the auxiliary agent and the balance of deionized water. The weeding composition is applied in a stem and leaf spraying mode, that is, 30-45 days after rice transplanting, 100 g of the weeding composition is mixed with 30 Kg of water per mu to be evenly sprayed to the surfaces of plants at a time, the plant control effect and the biomass control effect on alternanthera philoxeroides in a rice field are remarkably better than those of three single dosages of fluroxypyr, prometryn and vanillic acid 30 days and 60 days after the weeding composition is applied, and the weeding composition is safe to rice and free of pesticide residues. The yield of the rice is increased by more than 10.00%, and the composition has the advantages of safety, high efficiency and long lasting period.

The invention discloses a special organic-inorganic compound fertilizer for improving the yield and quality of rice in a rice field, and belongs to the technical field of agricultural fertilizers. The compound fertilizer comprises a three-layer structure consisting of a porous core layer, a quick release coating layer and a biodegradable film, wherein the porous core layer is prepared from ammonium polyphosphate, potassium humate, nano charcoal modified chicken manure, mineral source potassium fulvate and sodium carboxymethyl cellulose-bentonite composite colloid; the quick-release coating layer is prepared from sulfur-resin double-layer coated urea, amino acid chelated zinc, alginic acid complex boron, silica sol, ammonium molybdate, 5-aminolevulinic acid and nano cerium oxide; the biodegradable film is prepared from a film forming solution and a bioactive microbial agent. Through the design of a three-layer structure and the combination of an organic-inorganic-microorganism synergistic technology, accurate matching of nutrient release and a rice fertilizer requirement rule is achieved, meanwhile, soil health and environmental protection are considered, and an innovative solution is provided for green high-yield rice planting.

The invention discloses a composition containing iso-aromatic oxalic acid and taurine and application of the composition in relieving salt stress of crops. The composition is composed of iso-aromatic oxalic acid and taurine according to a mass ratio of 1: (1-4). According to the composition containing the iso-aromatic oxalic acid and the taurine, the iso-aromatic oxalic acid and the taurine are compounded according to the specific mass ratio of 1: (1-4), the growth and salt tolerance of crops can be enhanced through the synergistic effect of the iso-aromatic oxalic acid and the taurine, and especially for common food crops such as wheat and rice, the growth and salt tolerance of the crops can be improved. A good growth state can still be kept in a saline-alkali environment, the germination rate of crops is increased, tender leaves and roots are long, and the application prospect in agricultural production is very wide.

The invention belongs to the technical field of soil conditioners, and particularly relates to a rice field soil conditioner and application thereof. The invention relates to a rice field soil conditioner. The rice field soil conditioner is composed of a compound fertilizer and a complex microbial inoculant, the compound fertilizer is prepared by mixing the following components in parts by weight: 20-30 parts of rice husk biochar, 20-30 parts of shell powder and 10-15 parts of potassium fulvate, the complex microbial inoculant is prepared by mixing the following components: 3-4 parts of paenibacillus polymyxa; 2 to 3 parts of bacillus marinus; and 1.5 to 2 parts of bacillus firmus. The soil conditioner is composed of a compound fertilizer and a complex microbial inoculant, the complex microbial inoculant is formed by mixing three microbial inoculants of paenibacillus polymyxa, paenibacillus marinus and bacillus firmus, and the soil conditioner is beneficial for improving soil fertility and increasing the thousand seed weight of rice, so that the yield of the rice is increased. And the chalky grain rate of the rice can be reduced, the rice roughness, the head rice rate, the amylose content, the gel consistency and the like can be improved, the rice quality can be improved, and the economic benefit of the rice can be improved.

The invention relates to the technical field of agriculture, in particular to a preparation method and an application method of a zinc-rich cadmium-reducing yield-increasing foliar fertilizer. The specific technical scheme is as follows: the zinc-rich cadmium-reducing yield-increasing foliar fertilizer is prepared from the following components in percentage by mass: 20 to 30 percent of porous chitosan, 30 to 40 percent of L-malic acid and 40 to 50 percent of nano zinc oxide. The technical problem that in the prior art, the zinc content of rice cannot be increased, meanwhile, the rice yield cannot be increased, and the cadmium content of rice cannot be reduced is solved.

The invention discloses a method for increasing the yield of ratooning rice, and relates to a fine field management technology. In the whole process from sowing to harvesting, the method comprises the steps that nitrogenous fertilizer, phosphate fertilizer and potash fertilizer are applied in the specific growth stage, shallow water layer irrigation is kept, and water management is conducted immediately after first season rice is harvested so as to promote growth in the regeneration season. In addition, the method further comprises the steps of exogenous spraying of a plant growth regulator in the key growth period and unified management of diseases and pests. According to the technical scheme, the yield and stability of ratooning rice are improved by optimizing fertilization, irrigation and use of a plant growth regulator, and meanwhile environment safety and crop quality are guaranteed.

The invention provides a method for improving biomass, yield and nitrogen utilization rate of crops and an iron-rich compound fertilizer.The method comprises the steps that an iron fertilizer is supplemented and applied to the crops, so that the microelement iron in the iron fertilizer can remarkably promote absorption and assimilation of the applied crops on mineral nutrition of the nitrogenous fertilizer, and the synergistic effect is achieved; wherein the application amount of the iron fertilizer to the crops is 0.37-0.74 kg per mu. And by adopting the method provided by the invention, the tillering number and nutrition absorption and utilization of crops can be enhanced according to a fertilization method of field crops and normal crop field management, so that the biomass, the yield and the nitrogen utilization rate of the crops are effectively improved.