2224 results about "Nitrogen fertilizer" patented technology

The invention relates to nitrogen element fertilizer, in particular to a nitrogen element fertilizer composite synergist and a preparation method thereof. The composite synergist consists of a biochemical inhibitor, a synergist, a nitrogen element stabilizer, a carrier and microelements, the weight portion ratio of the materials is 1:0.01-1: 0.01-0.5: 0.5-1: 0-0.05, wherein the biochemical inhibitor can be a nitrification inhibitor and a urease inhibitor, the synergist can be poly-aspartic acid, and the nitrogen element stabilizer can be hydrolyzed amino acid, humic acid, alginic acid or alginic acid water soluble salt. The preparation method comprises the following steps: crushing the raw materials, screening the raw materials with a sieve of 30 to 100 meshes, and stirring and mixing the raw materials according to the proportion. The nitrogen element fertilizer composite synergist is suitable for growing long acting nitrogenous fertilizer taking urea or ammonium nitrogen fertilizer as raw materials and can be applied to various soils together with urea or ammonium nitrogen fertilizer so as to effectively prolong the fertilizer efficiency period of the urea or the ammonium nitrogen fertilizer. The fertilizer efficiency period can reach 100 to 120 days. The nitrogen element fertilizer composite synergist has remarkable resistance to diseases, drought and lodging, effectively improves the capability of soil to reserve nutrients, and has good effects for off-season crops.

A method preparing controlled release nitrogen in particulate fertilizers which exhibit single growing season availabilities to plants of about 80 percent or higher. The method utilizes relatively low urea and ammonia to formaldehyde mol ratios of about 1.7 urea to 0.1 ammonia to 1 formaldehyde to assure high conversions to controlled release nitrogen with low free ureas, and carefully controlled elevated temperatures, acid dehydration condensation catalyst concentrations and short dehydration reaction times of about 2-4 minutes to provide effective conversion of hydroxymethyl nitrogen compounds by dehydration condensation reaction to controlled release methylene nitrogen compounds. Quick neutralization of the dehydration catalyst in a turbulent mixing reactor minimizes the formation of undesirable methylene nitrogen polymers which are hot water insoluble and unavailable to plants in a single growing season.

The invention relates to a method for accurate fertilization for apple tree. The method decides target yield according to soil fertility based on 4000 kg of high quality organic fertilizer, then determine fertilizer consumption according needed fertilizer, fertilizer supply ability by soil and fertilizer availability, dressing all organic fertilizer, 70% of the nitrogen fertilizer and phosphatic fertilizer and 50% of potassium fertilizer as base fertilizer, taking left fertilizer for additional dressing, dressing the left 30% nitrogen before germination, dressing the left 30% phosphatic fertilizer before flower bud differentiation, dressing left potassium fertilizer during fruit expanding period, spraying fertilizer on leaf in different growing period for 6- 8 times in one year. The productivity and output value are increased by 21.5% and 21.3% respectively, the high- quality fruit rate is increased from 35% to 62%,and the net value is added by 615 yuan per mu.

The fertilizer specially for producing Chinese medicine materials divided into root and stem type, flower and fruit type, and whole herb type. The main material includes nitrogen fertilizer, phosphate fertilizer and potash fertilizer, which are compounded in three ratios of N-P2O5-K2O of 10 to 8 to 7, 22 to 8 to 7, and 27 to 15 to 10. The fertilizer has middle and trace elements Mn, Be, Mg, Fe and Zn in different contents added. The fertilizer is produced into grains of 1.5-8 mm diameter and has heavy metals controlled within the relevant standard.

The invention discloses a composite microbial inoculum organic multielement compound fertilizer which is prepared from microbial inoculum, organic component and inorganic fertilizer. The microbial inoculum is a composite microbial inoculum which comprises the following three types of microbial inocula: resource type microbial inoculum, which contains Bacillus megaterium, thiobacillus thiooxidans, Bacillus mucilaginosus and Bacillus circulans; environment-friendly microbial inoculum, which contains Arthrobacter and Alcaligenes; and antibiotic microbial inoculum, which contains Streptomycs micuoflavus and Streptomyces jingyangensis. The organic component is one or more of cereal crop straw, subsidiary agricultural product dreg, sugar mill bagasse, bran coat, municipal and rural domestic waste, and livestock and poultry dung. The inorganic fertilizer is one or more of nitrogen fertilizer, phosphate fertilizer, potash fertilizer and medium/micro-nutrient element fertilizer. The weight proportion of microbial inoculum to organic constituent to inorganic fertilizer is (5-25):(18-28):(47-77).

A process and apparatus are described for generating electrical energy using grains or other renewable biomass as the fuel, and for producing fertilizer to grow subsequent crops. In the process, a biomass material is incinerated in a firebox of a boiler to power a first turbine to create electricity. An excess air flow is introduced into the firebox to increase NO_x production. The oxidation area of the boiler is operated at a temperature exceeding about 2,000° F., and the flue gases are maintained in the high temperature environment for an increased residence time to increase NO_x production. The flyash from the incinerated biomass is filtered from the flue gases exhausted from the boiler. The NO_x is removed from the filtered flue gases and used to produce a nitrogen fertilizer. The nitrogen fertilizer is blended with the flyash to form a balanced fertilizer product which allows sustainable production of the biomass material.

The invention discloses an organic fertilizer, which comprises the following raw materials including livestock excrement, poultry excrement, organic matters, domestic garbage, meal cake, leaves, rice husks, straw, weeds, crop straw, fire ashes, nitrogen fertilizers, phosphoric fertilizers, potash fertilizers, trace elements, compound bactericides 1 and compound bactericides 2. The invention also discloses a manufacture method of the microbial organic fertilizer. The microbial organic fertilizer disclosed by the invention has the advantages that the technical problems are solved to realize the effect that the household garbage, the leaves, the weeds and the like are perfectly applied to the organic fertilizer, and the defects that in the existing organic fertilizer product, phenomena of root burning and seedling burning more or less exist, the fertilizer effect and the effect period are equivalent to that of chemical compound fertilizers, the soil improvement effect is poor, and the like are overcome.

The invention discloses a special suspension liquid compound fertilizer for saline-alkali soil and a preparation method of the special suspension liquid compound fertilizer. The compound fertilizer comprises the following raw materials in parts by weight: 0.8-7.2 parts of a nitrogen fertilizer, 0.6-1.1 parts of a boric fertilizer, 0.5-0.8 part of EDTA-Zn, 0.5-0.8 part of EDTA-Mn, 2.0-5.0 parts of humic acid powder, 7.0-14.0 parts of a calcium fertilizer 8.0-16.0 parts of a phosphatic fertilizer, 5.0-9.0 parts of a potash fertilizer, 14.0-19.0 parts of an organic matter, 6.0-9.5 parts of a soil conditioner, 0.8-2.0 parts of a microbial agent, 2.0-4.0 parts of a wetting dispersant, 2.0-4.0 parts of an emulsifier, 1.0-3.0 parts of a thickener, 1.5-3.0 parts of an antifreezing agent and 23-30 parts of water. Through reasonable compounding of various nutritional ingredients, especially an efficient synergistic effect among the humic acid, the soil conditioner and the microbial agent, the physical and chemical properties of the soil are well adjusted, re-accumulation of saline matters is avoided, and nutrient elements required for growth and development are provided for crops, thus better growth of roots of the crop is facilitated, the yield and the quality of the crop are improved, and meanwhile, the element deficiency of the crop can be effectively prevented.

The present invention discloses a rhizosphere regulating fertilizer, which mainly consists of the components of the following weight portions: 100 to 500 portions of nitrogen fertilizer, 30 to 300 portions of phosphatic fertilizer, 50 to 400 portions of potassium fertilizer, 50 to 200 portions of fertilizer of middle elements, 10 to 100 portions of micronutrient fertilizer, 20 to 100 portions of organic acid, 5 to 50 portions of organic amine, 5 to 30 portions of biological active substance, and 200 to 1,000 portions of water. The rhizosphere regulating fertilizer has excellent effects on the regulation of the rhizosphere and can be widely used for field crops, cash crops, vegetables and fruit trees. And the rhizosphere regulating fertilizer has the advantages of low cost and stable effects, and can be promoted in a large scale.

The invention relates to a one-time nitrogen supply and fertilizer application method capable of improving applied nitrogen fertilizer effect of cured tobacco. The method is characterized in that: organic fertilizer decomposed cake fertilizer, decomposed pig manure, inorganic potassium nitrate fertilizer, special compound fertilizer for the cured tobacco and calcium superphosphate are used as base fertilizers; the fertilizers are applied in holes uniformly at the same day of transplanting the cured tobacco, tobacco ridges are covered by using a double-color plastic film, furrows of the tobacco ridges are connected with a drainage ditch, and the nitrogen amount of the organic fertilizer is 55 to 65 percent of the nitrogen amount of the base fertilizers; the nitrogen amount of the inorganic fertilizer is reduced by 45 to 55 percent according to the nitrogen amount of the inorganic fertilizers of the local base fertilizers and additional fertilizers, wherein the nitrogen of the potassium nitrate form accounts for 55 to 63 percent; in 25 to 35 days after the cured tobacco is transplanted, the film is uncovered, soil dressing is performed, and first top dressing is performed by using potassium sulfate and adopting a spraying mode; and second top dressing is performed in 40 to 45 days after transplanting, and third top dressing is performed after topping. In the method, the utilization rate of the cured tobacco nitrogen fertilizer is improved by 30 to 70 percent compared with the traditional fertilizer application, and the agricultural utilization rate of the cured tobacco nitrogen element is improved by 63 to 176 percent compared with the conventional fertilizer application; and the method is suitable for southern high-temperature rainy tobacco regions such as Guangdong and the like.

The invention provides a sustained-release organic fertilizer for fruits and vegetables and a preparation method thereof. The sustained-release organic fertilizer for fruits and vegetables consists of lignin, kieselguhr, humic acid, calcium-based silicate minerals, a nitrogen fertilizer, a phosphatic fertilizer, a potassic fertilizer, trace elements, sesame-seed cake and water, wherein the trace elements comprise ferrous sulfate, boron sulphate, crystallized magnesium sulfate and molybdenum sulphate. According to the preparation method, the fertilizer is prepared by dissolving the components, stirring, mixing and granulating. The sustained-release organic fertilizer for the fruits and vegetables is reasonable in formula, the utilization rate of the organic fertilizer and the yield of the fruits and vegetables are improved greatly under the synergistic action of the components, the problems of eutrophy or nutrient deficiency symptoms of crops and water body pollution caused by fertilizer loss are solved effectively, resources are saved, and the cost is reduced; and the preparation method is simple, and is applicable for industrial production.

The invention relates to spring maize cultivation, in particular to a dedicated fertilizer for producing green corn and a preparation and an application method thereof.The fertilizer is composed of urine-based nitrogenous fertilizer, phosphate fertilizer, potash fertilizer, medium elements and trace elements; in the preparation method, the solid raw materials with a grain size of 1.5-4.5mm are selected; then the medium elements are added to humic acid or humic acid salt accounting for 60-100% of the mass percent of the medium elements to be mixed; afterwards, trace elements are added and mixed with the mixture, cementing agent is used for pelleting and producing solid raw materials with a grain size of 1.5-4.5mm for standby use; finally, the medium elements and trace elements mixed for pelleting are uniformly mixed with the urine-based nitrogenous fertilizer, phosphate fertilizer and potash fertilizer.The dedicated corn fertilizer is applied to the corn spring sowing as base fertilizer at one time and no after manuring is not needed.The use level of the urea-based nitrogenous fertilizer in the fertilizer of the invention proportion of the urea-based nitrogenous fertilizer in different release periods are set with proportion of the urea-based nitrogenous fertilizer in different release periods according to fertilizer-demanding characteristics on the nitrogenous fertilizer by the corn in different growth periods to form 4-level supply speed of the fertilizer nitrogen, thus remarkably controlling loss of nitrogenous fertilizer.

The invention relates to a water-holding and cultivating functional compound fertilizer, comprising a nitrogen fertilizer, a phosphate fertilizer a potash fertilizer, a trace element fertilizer, a compound amino acid, a soil conditioner, an organic matter and the like. In addition, the invention relates to a preparation method of the water-holding and cultivating functional compound fertilizer. The invention also relates to use of the water-holding and cultivating functional compound fertilizer for improvement of the growth characters and/or yield of crops.

The invention relates to a fertilizer-mix pesticide with functions of disease controlling, pest controlling, weed controlling, and fertilizer efficiency enhancing. The fertilizer-mix pesticide comprises pesticidal, bactericidal, and herbicidal active components, and a fertilizer efficiency enhancer. With added necessary auxiliary components, a required dosage form is formed. The fertilizer-mix pesticide can be applied on wheat, rice, corn, sugarcane, eucalyptus, tobacco, potato, sweet potato, and vegetables. With the pesticide, underground pests can be dispelled and killed, soil-borne diseases can be controlled, the occurrence of seedling-stage pests and diseases can be controlled, weeds can be effectively prevented and removed, nitrogen fertilizer utilization rate can be improved, nitrogen effective period is prolonged, and phosphate fertilizer and potash fertilizer are activated. With the pesticide, multiple functions such as disease controlling, pest controlling, weed controlling, fertilizer effect enhancing, and the like are provided.

The invention relates to a manganese residue compound fertilizer and a preparation method thereof. Manganese ore leached residue is used as the main raw material, a carbonate-containing fertilizer is added to convert calcium sulfate in the manganese residue into calcium carbonate, and the manganese residue compound fertilizer is prepared from the manganese residue containing the calcium carbonate, the lignin-containing additive, and one or more of nitrogen fertilizer, phosphate fertilizer and potash fertilizer. The carbonate-containing fertilizer and the lignin-containing additive can effectively prevent soil from packing together, keep the acid-base balance in soil, and enhance the fertilizer efficiency. The invention can effectively utilize abundant manganese residue generated in electrolytic manganese industry, and provides an effective way for recycling manganese residue.

The present invention discloses a Chinese milkvetch cultivation method in rice field, and relates to a Chinese milkvetch cultivation and utilization technique under the condition of paddy field rice-green fertilizer rotation cropping system. It is characterized by intersowing Chinese milkvetch seeds in the rice field, and adopting a series of measures of channelling and discharging water after the rice is harvested so as to implement said invention.

The present invention relates to fertilizer, and is especially one kind of long acting corn fertilizer. The long acting corn fertilizer is prepared with ammonium sulfate 200 weight portions, ammonium chloride 500 weight portions, urea 400 weight portions, ammonium carbonate 50 weight portions, diammonium carbonate 250 weight portions, monoammonium carbonate 200 weight portions, potassium chloride 350 weight portions, zinc sulfate 10 weight portions, borax 2.5 weight portions, NAM persistent agent 2.5 weight portions, and bentonite 150 weight portions, and through mixing, palletizing, stoving at 80-100 deg.c and other steps. It has nitrogen fertilizer, phosphate fertilizer and potash fertilizer in the ratio of 20 to 10 to 10, long fertilizer efficiency, and capacity of meeting the requirement of corn in different growth stages.

The present invention discloses a kind of nutritious rice with rich organic selenium and zinc and its production method. The nutritious rice with rich organic selenium and zinc has organic selenium content of 0.16-1.12 mg/kg and zinc content of 0.5-1.5 mg/kg. The nutritious rice with rich organic selenium and zinc is made of paddy with rich organic selenium and zinc, and the paddy with rich organic selenium and zinc is produced through applying selenium and zinc enriched fertilizer compounded with selenite, zinc fertilizer, organic nitrogen fertilizer, phosphate fertilizer and potash fertilizer and multifunctional trace elements during paddy growth.

The invention discloses bacillus megaterium and an application thereof, and belongs to the field of microorganisms. A plant growth promoting bacterium (bacillus megaterium JX15) is collected in the China General Microbiological Culture Collection Center on Dec.20, 2011, the class name is bacillus megaterium and the collection number is CGMCC No.5622. The bacillus megaterium has the beneficial effects that a strain can produce indoleacetic acid with high yield, can be used for nitrogen fixation and can grow by using sparingly-soluble phosphates as phosphorous sources, so as to improve the utilization rates of fertilizers, promote plant root development and absorption of the fertilizers, and increases the contents of soil mineral nitrogen and available phosphorus; the strain has a good effect on promoting growth of peanuts; the high-yield indoleacetic acid promotes the growth and the development of the peanuts; and the nitrogen and phosphate fertilizer utilization rates of the peanuts are relatively high due to the increasing of the contents of the soil mineral nitrogen and the available phosphorus.

The invention relates to a fertilizer formula and an application method of the fertilizer. The selenium-iron-zinc-enriched organic-inorganic fertilizer for producing selenium-iron-zinc-enriched rice is prepared by granulating proportionally mixed selenite, ferrite, zinc salt, nitrogen fertilizer, phosphate fertilizer, potash fertilizer, polyaspartic acid or other salts, decomposed organic fertilizer and silicon fertilizer. The fertilizer is applied to the field as a base fertilizer or supplementary fertilizer 1-4 times. The fertilizer can simultaneously provide selenium, iron and zinc and other nutrient reinforcing substances required by growth of crops. The fertilizer is beneficial to growth of the crops, enhances the absorptivity and conversion rate of selenium, iron and zinc, and can produce selenium-iron-zinc-enriched rice satisfying the Food Standard.

This invention relates to a multifunctional high polymer composite which has the ability of hydrating, water holding and delayed release of chemical fertilizer and its preparation. The feature of the invention is that it is formed formblely by a mixture of high polymer bibulous, delayed release high polymer nitrogenous fertilizer, inorganic phosphate fertilizer, potash fertilizer and polyurethane soft foam. The weight amount of raw materials is that high polymer bibulous 10-40, delayed release high polymer nitrogenous fertilizer 5-20, inorganic phosphate fertilizer 2.5-10, potash fertilizer and polyurethane soft foam 50-51.

The invention relates to the technical field of water-soluble fertilizers and in particular to a water-soluble microbial multi-element solid fertilizer. The solid fertilizer mainly comprises the following ingredients in part by weight: 10-50 parts of ingredient A, 1-60 parts of ingredient B, 5-30 parts of ingredient C, 1-50 parts of ingredient D, 0.1-10 parts of ingredient E, 10-40 parts of ingredient F, and 0.1-10 parts of ingredient G; and the ingredients are mixed thoroughly to produce the water-soluble microbial multi-element solid fertilizer. The ingredient A is water-soluble humic acid, the ingredient B is a nitrogen fertilizer, the ingredient C is a water-soluble phosphorus fertilizer, the ingredient D is a water-soluble potassium fertilizer, the ingredient E is a solid microbial fertilizer, the ingredient F is amino acids, and the ingredient G is trace elements. The water-soluble microbial multi-element solid fertilizer has a high content of effective ingredient, integrates organic fertilizers and inorganic fertilizers, and is a high-quality water-soluble fertilizer which is economical and practical.

Systems and methods of determining nitrogen levels from a digital image and in-season nitrogen measurement and fertilization of non-leguminous crops from digital image analysis are disclosed herein. In particular, a method of determining leaf nitrogen concentration and yield from a digital photograph of a fully developed leaf (collared leaf) of a crop of non-legumes, such as corn, wheat, rice, cotton, potatoes sugarcane, turfgrass or forage grass species. The digital image is processed to determine a dark green color index (“DGCI”), which is closely related to leaf nitrogen concentration and yield. Standardized color disks having known DGCI values are included in the digital photograph and serve as an comparative standard. The comparative standard allows correction of DGCI of samples when using different cameras and/or when lighting conditions change. The DGCI values can then be used to determine the amount of nitrogen fertilizer that should be applied to recover crop yield potential.

The invention discloses an environment-friendly slow-releasing long-standing compound fertilizer which belongs to polyelement compound fertilizer and a production method thereof. The fertilizer comprises the following raw material ingredient (by parts by weight): 10-40 parts of powdered rock phosphate, 10-40 parts of potassium feldspar, 15-40 parts of coal gangue, 10-20 parts of magnesite powder, 10-30 parts of nitrogenous fertilizer, 8-18 parts of swell soil, 1-3 parts of kieselguhr and 0.3-1 part of trace element; the powdered rock phosphate, the coal gangue and proper amount of coke are roasted for 8-16 hours at 500-800 DEG C, cooled, crushes and screened by a 60-mesh sieve. The invention provides an environment-friendly energy-saving fertilizer capable of improving soil with comprehensive effective fertilizer composition, slow releasing and high fertilizer utilization ratio. Meanwhile, the environment-friendly slow-releasing long-standing compound fertilizer is suitable for various soils and growth of various crops and the preparation method thereof is provided. The problems of low fertilizer utilization ratio, environment pollution, hardening soil, high production cost and the like in the prior art are solved.

The invention relates to a formula of a fertilizer, and a using method for the fertilizer. A selenium and ferrum-enriched organic inorganic fertilizer used for producing selenium and ferrum-enriched rice is prepared by mixing selenite, ferrite, a nitrogen fertilizer, a phosphate fertilizer, a potash fertilizer, a decomposed organic fertilizer and a silicon fertilizer in a ratio, and granulating. The selenium and ferrum-enriched organic inorganic fertilizer is prepared from the following components in part by weight: 0.004 to 0.010 part of selenite, 1 to 5 parts of ferrite, 15 to 33 parts of nitrogen fertilizer, 12 to 24 parts of phosphate fertilizer, 10 to 17 parts of potash fertilizer, 0.02 to 0.08 part of sodium of polyaspartic acid or salt thereof, 30 to 50 parts of decomposed organic fertilizer and 5 to 8 parts of silicon fertilizer. The fertilizer contains selenium and ferrum, also contains other nutritional fortification substances required by growth of crops, can simultaneously provide selenium, ferrum and nutritional fortification substances required by the growth for the crops, contributes to the growth of the crops, improves the absorption rate and conversion rate of the selenium and the ferrum, and achieves an effect of producing the selenium and ferrum-enriched rice reaching the selenium and ferrum-enriched rice standard by applying a small amount of selenium and ferrum.

This invention discloses a sustained-release chelated topdressing fertilizer containing secondary and trace elements. The sustained-release chelated topdressing fertilizer is composed of: urea 10-50 parts, ammonium sulfate 0-30 parts, ammonium chloride 0-35 parts, potassium chloride 0-30 parts, potassium sulfate 0-40 parts, calcium amino acid chelate 0-1 part, magnesium amino acid chelate 0-1 part, ferric amino acid chelate 0-1 part, zinc amino acid chelate 0-1 part, copper amino acid chelate 0-0.2 part, molybdenum amino acid chelate 0-0.1 part, manganese amino acid chelate 0-0.1 part, attapulgite 2-8 parts, borax 0-1 part, and dicyandiamide 0.02-0.1 part. The sustained-release nitrogen fertilizer has long effective period and high utilization rate of nitrogen, and can supplement necessary secondary and trace elements to crops. Crops applied with the sustained-release nitrogen fertilizer have such advantages as high yield, high quality, and no deficiency or loss of nitrogen in late period.

The invention discloses a special apple microorganism bacterial manure and relates to the technical field of microorganism bacterial manures. The microorganism bacterial manure takes 5-20 parts of compound microorganism bacterium agent, 10-20 parts of humic acid, 20-40 parts of turfy soil, 10-20 parts of nitrogenous fertilizer, 5-15 parts of phosphate fertilizer, 10-20 parts of potash fertilizer, 1-10 parts of micro element fertilizer and 1-10 parts of bentonite as raw materials, and is prepared by stirring, mixing, granulating, drying and screening. The special apple microorganism bacterial manure has the advantages of being complete in nutrition, improving apple yield and quality, improving fertility, prolonging fertilizer efficiency and improving soil environment.

The invention discloses a process for treating nitrogen-containing wastewater by ion exchange and reclaiming ammonium nitrate, and belongs to the technical field of environmental protection and wastewater treatment. The process is characterized in that: a strong acid cation exchanger and a weak alkali anion exchanger are connected in series to realize denitrification of the nitrogen-containing wastewater of a nitrogen fertilizer plant; the process is used for treating the high-concentration ammonia nitrogen and median-concentration nitrate nitrogen containing wastewater of the nitrogen fertilizer plant; strong acid cation exchange resin and weak alkali anion exchange resin are regenerated by adopting nitric acid and aqueous ammonia respectively; and the regenerated waste liquid ammonium nitrate is evaporated and concentrated to reclaim the ammonium nitrate. Compared with the traditional wastewater denitrification method, the process can remove ammonia nitrogen and nitrate nitrogen from the wastewater at the same time, reclaim the ammonium nitrate and recycle production water, does not produce secondary pollution, reclaims products from the pollutants, has obvious environmental benefit and economic benefit, and is a new path for treating the high-concentration ammonia nitrogen and median-concentration nitrate nitrogen containing wastewater of the nitrogen fertilizer plant.

The invention discloses polymorphic nitrogenous fertilizer and a preparation method thereof. The polymorphic nitrogenous fertilizer comprises, by weight, 13-18 parts of urea, 63-65 parts of ammonium sulfate, 13-15 parts of ammonium chloride, 3-4 parts of animal hairs and feathers, 14-16 parts of modified attapulgite, 0.6-0.8 part of zinc sulphate monohydrate, 0.2-0.4 part of micronutrients fertilizer, 3-8 parts of ferrous sulfate, 0.3-0.5 part of nitrogen-fixing bacteria, 2-4 parts of modified nanocarbon, 1-3 parts of fructus cnidii, 5-7 parts of pomegranate tree roots and 9-11 parts of willow leaves. The feathers and the like are hydrolyzed by acid to form amino acid, secondary and trace elements are chelated, carboxymethyl cellulose increases a chelation structure of the secondary and trace elements so as to facilitate effective utilization of the secondary and trace elements, and invalid release of the secondary and trace elements is reduced. The polymorphic nitrogenous fertilizer is suitable for crops of wheat, rice, corn, soybean, rape and the like, can urge the wheat and the rice to turn green rapidly, be much in shooting and longing resistant and enhance chill-proof, drought-resistant and disease and insect resistant capacity, and enables cotton and linen crops to enhance tension and strength of fiber and improve output and quality remarkably.

The invention discloses a method for aerially photographing a crop canopy picture for crop nitrogen analysis and soil fertilization guidance by using an unmanned aerial vehicle. The crop canopy picture is aerially photographed through the unmanned aerial vehicle, meanwhile, aerial latitude and longitude corresponding to the crop canopy picture are obtained, and crop nitrogen analysis and soil fertilization guidance are carried out by combining picture information and latitude and longitude information. According to the obtained method, large-area farmland information can be quickly obtained, influence and limitation of crop growth and farmland environments are avoided, a crop nitrogen state is diagnosed by using color parameters of the picture and the nitrogen fertilizer topdressing index is recommended, the method is accurate and reliable, accurate management of a nitrogen fertilizer is facilitated and better economical and ecological benefits are achieved. The method is fast and simple in operation, stable and reliable in structure, low in operation cost and beneficial to farmland application and popularization; and fine farming of the farmland can be significantly promoted. The aerial photograph equipment of the unmanned aerial vehicle is simple in structure and beneficial to efficient and stable aerial photographing of the crop canopy picture.