1093 results about "Crop quality" patented technology

The invention relates to a soil-improving bio-fertilizer and a preparation method thereof. The soil-improving bio-fertilizer is prepared by mixing the following raw materials in parts by weight: 200-400 parts of grass carbon, 200-400 parts of an organic fertilizer, 100-400 parts of an inorganic fertilizer, 50-200 parts of a porous inorganic matter, 10-30 parts of trace elements, 50-80 parts of clay and 10-20 parts of a compound microbial agent. A plurality of microorganisms with the functions of fixing nitrogen, solubilizing phosphate and solubilizing potassium are added into the fertilizer, so that the nitrogen content of soil can be increased, the utilization ratio of a chemical fertilizer is increased, the soil structure is improved, the crop yield is increased, and the crop quality is enhanced.

A control system is described for a combine harvester having a crop processing system, a control panel for enabling an operator of the combine harvester to set a plurality of operating parameters of the crop processing system that affect the harvesting performance, and a plurality of sensors for determining prevailing values of crop quality parameters. The control system comprises a data processor having a display (12) for communicating information visually to the operator and acts to determine when a crop quality parameter exceeds an unacceptability threshold. Following such determination, the control system displays to the operator an operating parameter of which adjustment is recommended in order to restore the crop quality parameter to an acceptable value. The recommended operating parameter is derived from data stored in a look-up table within the data processor.

The invention discloses a method for producing high-water solubility nitrophosphate fertilizer by phosphorite nitrolysis and calcium nitrate freezing. The high-water solubility nitrophosphate fertilizer is prepared from the processes of phosphorite nitrolysis, fluorine removal, calcium nitrate freezing separation, further removal of calcium in ammonium sulfate, ammonia liquor neutralization and deposition removal of impurities, and evaporation concentration and crystallization. Specially, the method for producing high-water solubility nitrophosphate fertilizer by phosphorite nitrolysis and calcium nitrate freezing comprises the following steps of 1, acidolysis, 2, fluorine removal, 3, calcium nitrate freezing crystallization, 4, double decomposition removal of calcium in ammonium sulfate,5, neutralization and deposition removal of impurities, 6, evaporation concentration and crystallization, and 7, phosphogypsum transformation. The high-water solubility nitrophosphate fertilizer prepared by the method has a dissolution rate great than or equal to 99.9% in water, wherein nitrate nitrogen is easy for be absorbed by drops, satisfies requirements of a few commercial crops, has a highutilization rate, and improves a crop yield by 8 to 25% and crop quality. The method reduces waste discharge, is environmentally friendly, can be utilized for structure adjustment and product upgradeand update of the traditional phosphorus chemical industry, and has good economic and environmental benefits.

The invention relates to the technical field of compound fertilizer, in particular to garden waste biomass charcoal-based compound fertilizer and a preparation method thereof. The preparation method includes steps that cracking garden waste under a high temperature to obtain garden waste biomass charcoal and combustible gas; mixing raw material of the compound fertilizer with 8-12% of garden waste biomass charcoal according to the total raw material weight of the compound fertilizer, melting, granulating and gathering granules; cooling the gathered granules under negative pressure, and sieving; enveloping the sieved granules, packaging and delivering to obtain the garden waste biomass charcoal-based compound fertilizer. The garden waste biomass charcoal-based compound fertilizer is rich in nutrient substance, coordinating and durable in nutrient element release, high in fertilizer nutrient use efficiency, capable of effectively improving and fertilizing the soil, improving the fertilizer utilization rate, increasing the organic substance content of the soil, lowering the volume weight of the soil, improving the moisture and fertility preserving ability of the soil and accelerating the crop growth, and also capable of obviously improving the crop output and improving the crop quality.

The invention discloses an amino acid bioorganic fertilizer as well as a preparation method and the use of the fertilizer and belongs to the field of bioorganic fertilizer production and application. The amino acid bio-organic fertilizer is prepared from the following components: organic substances, fermentation materials, compound functional microorganisms, compound amino acids and medium trace elements. The invention also discloses a method for preparing the amino acid bioorganic fertilizer. The method comprises the steps of grinding the organic substances and then evenly mixing the ground organic substances with the fermentation materials, the compound functional microorganisms, the compound amino acids and the medium trace elements, and then drying and packaging to obtain the fertilizer. The amino acid bioorganic fertilizer is capable of effectively improving the soil structure, increasing the soil granular structure and the organic matter content, improving soil fertility and remarkably increasing the crop yield and the crop quality, and has the remarkably effects of soil improvement, fertilization, production increase and conditioning, and the like.

The invention provides a multifunctional active organic fertilizer and a preparation method thereof, relating to an organic fertilizer containing bacteria, fungi and spores, particularly an active organic fertilizer with functions of soil restoration and disease / pest resistance. The invention aims to provide a multifunctional active organic fertilizer capable of restoring soil pollution and improving product quality and a preparation method thereof. The multifunctional active organic fertilizer is composed of three layers from inside to outside, wherein the innermost layer is composed of a component A of which the main effective components are Bacillus subtilis and Paecilomyces lilacinus; the middle layer is composed of a component B and a component C containing multiple rich nutritive elements; and the outermost layer is composed of a component D of which the main effective components are Streptomyces vinaceus-drappus and Gliocladium roseum. The multifunctional active organic fertilizer can passivate heavy metals in soil, activate the soil, improve the microecological environment of the rhizosphere, degrade the chemical pesticides and improve the crop quality. The multifunctional active organic fertilizer is used in the field of agricultural planting.

The invention discloses a biological pest repellant organic fertilizer which is a biological organic fertilizer with nicotine made by mixing tobacco residue fragments, humic acid potassium, a microbial agent and a proper amount of microelements according to a certain weight proportion after certain procedures and methods. The biological organic fertilizer with the nicotine of the invention can extremely enhance the utilization ratio of the complex fertilizer, has a certain effect of expelling and killing pests, and activates soil nutrients, improves crop quality, promotes stable growth of plants, and realizes the average increase in yield to be 18.6%-35.3%. The biological organic fertilizer has the advantages of reasonable formula, simple process, stable quality and performance, convenient use, and the organic fertilizer is a novel biological organic fertilizer.

The invention relates to a composition for improving soil, in particular relates to a saline-alkali soil conditioner. The saline-alkali soil conditioner is prepared by mixing the following components by weight percent: 20%-35% of sulfur powder, 20%-30% of humic acid, 5%-10% of bentonite, 20%-25% of magnesium sulfate heptahydrate, 8%-12% of calcium superphosphate, 1%-2% of zinc sulfate heptahydrate and 2%-3% of boric acid. The saline-alkali soil conditioner can be used for regulating acid-base level of the soil, and effectively supplementing microelements in the soil, improving the nutritional deficiency symptom of crops, chelating harmful heavy metal elements in the soil, reducing saline and alkali degree, promoting the soil to form a granular structure, improving root growth environment of crops, enhancing saline and alkali resistance of crops, disease resistance and cultivation of resilience, reducing the harm of saline and alkali to plant roots, and releasing the effective phosphorous solidified by the soil, increasing soil fertility, holding water and saving fertilizer so as to finally and completely improve the soil, recover the soil fertility, increase both production and income and improve crop quality and utilization rate of the fertilizer.

Algae is fermented with microbe to dissolve out the effective components and compounded with fulvic acid to reinforce the nutritious components and trace elements, so as to produce various kinds of fertilizer. The fertilizer contains various matters for promoting the growth of plant, and can strengthen the photosynthesis of crop, increase crop yield, raise crop quality, raise crop resistance, improve physical and chemical performance of soil and eliminate obstruction in succession cropping. The present invention is green fertilizer suitable for modern agriculture.

The invention discloses a composite fertilizer comprising chitin, humic acid, and middle and trace elements. The fertilizer is prepared from the raw materials of 1 part of chitin, 0.5 parts of chitosanoligosaccharide, 250 parts of urea, 450 parts of monoammonium phosphate, 100 parts of potassium chloride, 50 parts of sodium humate, 100 parts of bentonite, 10 parts of calcium-magnesium-phosphate fertilizer, 6 parts of zinc sulfate, 6 parts of borax, 4 parts of ammonium molybdate, 4 parts of manganese sulfate, 10 parts of ferrous sulfate, and 10 parts of magnesium sulfate. The fertilizer provided by the invention has the advantages that: the fertilizer has rich nutrient element; chitin, humic acid, and middle and trace elements are blended, such that the utilization rate of middle and trace elements is improved; and functions of cropping resistance, nematode control, crop disease reduction, soil improvement, crop quality improvement, high crop yield improvement are provided.

The invention relates to a making technology of a biological organic fertilizer, which belongs to the field of crop straw deep processing, and in particular relates to a method for making the biological organic fertilizer by using rice straws as a main raw material. More specifically, rice straws are adopted as the main raw material; animal wastes and pond sludge are adopted as auxiliary materials; and the main raw material and the auxiliary materials are fermented by EM (Effective Microorganism) strain, which is enlarged in multiple stages, so as to obtain the biological organic fertilizer. The method for making the biological organic fertilizer by using rice straws as the main raw material, provided by the invention, has the advantages of wide raw material source, low price, simple product making process and high beneficial bacteria content in the formed product as well as has the characteristics of increasing soil organic matter, improving the soil structure, promoting the soil microbial activities, enhancing the soil fertility keeping and fertility supplying properties and the like; and the crop yield is also obviously increased, the crop quality is improved and the fertilizer input can be reduced in the product application; therefore, the production cost is reduced and the farmer income is increased.

The invention provides a production process of organic fertilizer; firstly the train liquid is prepared by aerobic actinomycosis; the train liquid is sprayed into the uniform crushed material of straw, Chinese medicine residue, grass coal, wood coal and livestock dung according to the proportion, and then the material is stacked, the temperature rises to 60 DEG C to 80 DEG C automatically, and the temperature is kept for 7 to 14 days and then is dropped to 40 DEGC automatically, after that, the moisture is dried to less than 20 percent; afterwards the material is added with the lemery salt of 10 percent to 15 percent, phosphoric acid amine of 8 percent to 10 percent and amino acid of 1 percent to 2.5 percent, and when is mixed equably, thereby the organic fertilizer is generated. The production of the organic fertilizer has the advantages of simple production process, short production cycle, less strain consumption and low cost. The organic matter content of the fertilizer is greater than 30 percent; the amino acid content is above 2.5 percent; the content of nitrogen, phosphorus and potassium is 8 percent to 12 percent; and the fertilizer efficiency is high; while increasing the crop yield, the crop quality is improved, furthermore, the invention is conductive to environmental protection. Thereby the invention is suitable for the crops of foodstuff, tobacco leaf, vegetable and fruit.

The invention discloses an efficient green micro-crystallized mineral-biological compound fertilizer and a production method thereof. The compound fertilizer comprises the following components in parts by mass: 7-9 parts of N, 7-9 parts of P2O5, 7-9 parts of K2O, 25-30 parts of organic matters, 8-12 parts of humic acid, 3-6 parts of amino acid and 15-20 parts of chemical elements such as calcium,silicon, magnesium, selenium, molybdenum, boron and zinc, as well as not less than 0.02 billion / kg of available active bacteria. The efficient green micro-crystallized mineral-biological compound fertilizer has the beneficial effects of being capable of adapting to acidic-alkaline soil and neutral soil in various regions, improving the soil, enhancing the adsorption ability of the soil on nutrients, preventing nitrogen and potassium from being washed away by water due to a large amount of rainfall, reducing formation of insoluble phosphate and improving fertility of the soil; and in addition,nitrogen, phosphorus and potassium in the original soil can be activated to be absorbed by crops by virtue of microelements contained in the fertilizer, and the supply capability of the deep soil nutrients can be enhanced, thus the physiochemical indexes and biological environment of the soil can be improved in case of long-term application, hardened soil can be reduced, and the quality of crops can be obviously improved.

The invention provides an amino acid foliar fertilizer, comprising the following materials in percentage by mass: 30 to 50 percent of plant amino acid, 1 to 5 percent of compound sodium nitrophenolate, 15 to 25 percent of urea, 5 to 10 percent of ferrous sulphate, 5 to 10 percent of borax, 3 to 5 percent of cupric sulfate, 0.1 to 1 percent of ammonium molybdate, 1 to 2 percent of manganese sulfate, 4 to 8 percent of zinc sulfate, 10 to 20 percent of organic silicon, and the balance water. The amino acid foliar fertilizer has obvious effects of exciting activity of enzyme in crops, improving the photosynthetic efficiency of the crops, accelerating nutrition absorption and operation inside the crops, increasing the content of chlorophyll, improving stem substance accumulation and sugar content, improving crop quality, and enhancing crop drought resistance, disease resistance and immunity and the like, can be absorbed by leaves, stems and roots of various commercial crops, such as Chinese cabbages and other vegetables, so as to lead the crops to be higher, and has remarkable effect in enhancing the performances of root growth, sprouting, seedling strengthening, flower promoting, fruit swelling, fruit protecting and other aspects for the crops.

The invention discloses efficient biological bacterial fertilizer and a preparation method. The efficient biological bacterial fertilizer comprises fermentation microbial strains, function microbial strains, enzymic preparations, shale, rice bran, chitosan, plant ash, bone meal, mushroom dregs, discarded tobacco leaves and livestock manure proportionally. The preparation method includes cultivating microbial strains into the fermentation microbial strains; mixing the fermentation microbial strains with the shale, the rice bran, the plant ash, the bone meal, the mushroom dregs, the discarded tobacco leaves and the livestock manure proportionally and adding water to the mixture to adjust the water content to 50%; adding the function microbial strains, the enzymic preparations and the chitosan after fermentation, and smashing, screening, inspecting, packaging and warehousing an obtained fermented material. The efficient biological bacterial fertilizer is rich in beneficial microorganisms and medium trace elements, soil organic matter content and soil micro-ecological environment are improved, continuous cropping diseases of plants are also improved, plant growth is promoted, crop yield is increased, pest and disease damage is reduced, crop quality is improved and cost is saved.

The invention discloses an organic liquid fertilizer and a preparation method thereof, and amis to improve the fertilizer efficiency, and no environment pollution is caused. The organic liquid fertilizer comprises the following raw materials: raw fermentation liquid, potassium sulphate, magnesium sulfate and urea. The preparation method comprises the following steps: performing the mixing of main ingredients, fermentation cultures, compound enzyme, bentonite, ammonium sulfate, superphosphate, waste molasses and water, carrying out mixed fermentation, and filtering to obtain the raw fermentation liquid; adding potassium sulphate, magnesium sulfate and urea in the raw fermentation liquid, performing the uniform mixed agitation, fermenting and decomposing. Compared with the prior art, after dead poultry corpses are subjected to harmless treatment by an enzymolysis and microbial fermentation method, organic matters of the poultry corpses are decomposed to kill parasites and pathogenic bacteria in the dead poultry corpses, the organic liquid fertilizer and the preparation method have no environment pollution, the operation in the preparation process is simple, the cost is low, and the prepared organic liquid fertilizer can quickly and effectively increase soil fertility, improve the crop quality and the soil, and promote the sustainable development of the agricultural and ecological environment.

The invention discloses an alginic acid fertilizer synergist with an ammonia volatilization inhibiting effect. The alginic acid fertilizer synergist is characterized by being prepared from the following ingredients in parts by weight: 60-80 parts of seaweed, 2-5 parts of strains, 5-10 parts of carbon sources, 3-5 parts of nitrogen sources, 30-50 parts of water, 1.2-1.5 parts of medium trace elements, 0.4-0.6 parts of soil loosening agent, 2-4 parts of acid soil conditioners and 0.8-1.2 parts of plant growth regulators. The prepared alginic acid fertilizer synergist adopts the pure natural ingredients, so that the alginic acid fertilizer synergist is excellent in environmental protection property, can be degraded completely, and can facilitate a plant to absorb nutrients in soil; an ammonia volatilization inhibiting rate reaches up to 34-45%; the soil loosening agent can loosen the soil; the acid soil conditioner can improve a micro ecological environment of the soil and promote yield increasing of crops; the plant growth regulator accelerates germination and can increase the stress resistance of the crops; and the chelating state medium trace elements can increase the utilization ratio of nutrients and improve the quality of the crops.

The invention discloses an ecological BB fertilizer, relating to a mutifunctional ecological environment friendly compound fertilizer, which is formed by mixing functional urea, controllable slow release sulfurcoated urea, monoammonium phosphate, diammonium phosphate, potassium sulfate particle (or potassium chloride), agricultural magnesium sulfate particle, ammonium sulfate, bio-organic inorganic compound fertilizer, endophytic PASP fertilizer synergist DA-6, plant growth regulator and trace elements. Special ecological BB fertilizer for different plants can be prepared by soil testing formula, according to different farm crops and different soil structure. The ecological BB fertilizer can take effect for 3-120 days, the nutrition release is balanced, biological stress of the farm crop such as drought resistance, cold resistance, salt resistance, or the like can be improved. The product of the invention has great operation significance for increasing yield of grain, reducing production cost, steadily increasing grain production, keeping rural incomes growing, improving utilization rate of the fertilizer, reducing fertilizer waste, protecting ecological environment, guaranteeing farm crop quality and safety, and ensuring sustainable development of the agriculture.

The invention discloses a biologic organic bamboo charcoal fertilizer which comprises the following components in parts by weight: 10-30 parts of bamboo charcoal powder, 15-30 parts of bamboo powder, 8-15 parts of bean pulp, 30-50 parts of organic yeast material and 0.2-1 part of biologic culture, wherein the biologic organic bamboo charcoal fertilizer is made into powder or grains. The invention further provides a production method of the biologic organic bamboo charcoal fertilizer. The production method comprises the following steps: weighing the bamboo charcoal powder, the bamboo powder, the bean pulp, the organic yeast material and the biologic culture according to a production ratio, mixing by using a stirring machine so as to obtain the biologic organic bamboo charcoal fertilizer, or adding an adhesive into the components, and pelleting by using a pelleting machine so as to obtain the biologic organic bamboo charcoal fertilizer. The invention provides an environment-friendly solving way for treatment on waste of bamboo products, the prepared biologic organic bamboo charcoal fertilizer has the effects of completeness in nutrition elements, freedom of chemical residue, soil heavy metal and pesticide residue adsorption, soil environment improvement, soil caking prevention, disease resistance improvement, crop quality improvement, and the like.

The invention provides a cultivation method for interplanting stevia rebaudiana in tobacco. The method interplants the stevia rebaudiana at the initial stage before harvesting the tobacco to realize interplanting while harvesting. The method improves the traditional 'tobacco-rice rotation' or 'tobacco-vegetable rotation' mode by using the space and time of tobacco growth, and is feasible for improving the multiple crop indexes and increasing one-season income of farmers by adopting a 'tobacco-stevia rebaudiana-rice rotation' or 'tobacco-stevia rebaudiana-vegetable rotation' mode. The cultivation method improves the yield of unit area, improves the quality of crops, makes full use of time and space of preceding crop harvest and improves the multiple crop indexes; and the interplanting cultivation method is simple and convenient to operate, saves labor and cost, and has remarkable economic benefit.

A composite polypeptite fertilizer for promoting growth, and improving crop quality and soil is prepared from a composite fertilizer and polyaminosuccinic acid or its salt through preparing composite fertilizer, preparing the aqueous solution of polyaminosuccinic acid or its salt, mixing and granulating.

The present invention discloses one kind of full element fertilizer and its preparation process and application. The full element fertilizer consists of nitrogen fertilizer 20 wt%, phosphate fertilizer 15 wt%, potash fertilizer 15 wt%, calcium fertilizer 20 wt%, magnesium fertilizer 15 wt%, silicon fertilizer 6 wt%, sulfur fertilizer 2 wt%, zinc fertilizer 2 wt% and humic acid 5 wt%. The full element fertilizer has obvious yield increasing and crop quality raising effects, is suitable for different stages of crop and environment friendly.

The invention relates to a wheat special fertilizer. The wheat special fertilizer is a compound fertilizer or complex fertilizer containing nitrogen, phosphorus and potassium, wherein the weight ratio of N to P2O5 to K2O is (22-26): (18-20): (4-6). The wheat special fertilizer provided by the invention is reasonable in formula and has complete nutrients, a soil nutrient condition in North Henan is comprehensively considered, proportions of nutrient elements and raw materials of the fertilizer are selected, a ratio of nitrogen to phosphorus to potassium in the fertilizer is reasonable, nutrient releasing rate accords with wheat nutrient demanding rule in a wheat growing region in the North Henan, pertinency is high, operation is convenient, utilization rate of the fertilizer can be improved, application amount of the fertilizer can be reduced (application cost per Mu can be greatly reduced), yield can be increased, and crop quality can be improved; the wheat special fertilizer provided by the invention is applicable to a wheat producing area in North Henan, can be taken as a base fertilizer and can be applied in one step, once fertilizing on one batch of crops can be realized, and labour and time can be saved.

This invention discloses a method for preparing microbial compound fertilizer chelated with trace elements for spray and drop irrigation. The method comprises: hydrolyzing raw material of protein wastes to obtain composite amino acids, adding trace elements to chelate composite amino acids, and combining with beneficial bacteria (azotobacter, phosphorus fertilizer bacteria, potassium bacteria, bacillus, etc.) to obtain the microbial compound fertilizer. The microbial compound fertilizer has obvious nitrogen fixation, phosphorus and potassium leaching, and growth promotion functions, and has high utility. The release speed is controllable, and the microbial compound fertilizer can improve and activate soil, and improve crop quality.

The invention discloses a biomass charcoal soil conditioner. The soil conditioner comprises the following raw materials by weight: 40% to 50% of biomass charcoal, 20% to 30% of a functional microbial agent, 10% to 15% of desulfurized gypsum, 5% to 10% of calcium nitrate, 5% to 10% of ground phosphate rock and 1% to 2% of amino acid, wherein the functional microbial agent contains any two selected from the group consisting of bacillus subtilis, bacillus mucilaginosus, bacillus amyloliquefaciens, azotobacter, rhizobia and bacillus megatherium. The biomass charcoal soil conditioner provided by the invention can increase the water-retention rate and air permeability of soil, improve the content of organic matters in the soil, and regulate the pH value of the soil; meanwhile, the adoption of biological means to improve microbial environment of the soil is beneficial for promoting crop growth and high-efficiency nutrient utilization, increases the yield of crops, and improves the quality of the crops. The biomass charcoal soil conditioner provided by the invention effectively utilizes wastes, can improve the soil and enhance soil fertility, and specifically has significant improvement effect on saline alkali land.

The invention relates to a production method of low-rack coal degradation liquid. Low-rack coal used as a raw material is added with 2-10% of mixed oxidizing agent, 0.1-0.6% of negative catalyst and 0.2-0.5% of stabilizer to oxidize and degrade the low-rank coal, and the mixture is subjected to oxidation reaction, centrifugalization, filtering and vacuum rotating evaporation to obtain colourless low-rack coal degradation liquid. The colourless low-rack coal degradation liquid used as a new product has good effects in promoting growth and development of crops, increasing crop output, improving the crop quality, improving the seed germination rate, improving the plant salt resistance and the like, and is a multi-functional crop conditioner (plant conditioner); the process is simple, energy-saving and environment-friendly, and high in efficiency; one set of equipment can produce the low-rack coal degradation liquid and fulvic acid simultaneously, and the low-rack coal degradation liquid is safe and non-toxic, has strong appetency to plants, can take effect rapidly and is convenient for use.

The invention relates to the technical field of soil conditioner, in particular to garden waste biomass charcoal-based soil conditioner and a preparation method thereof. The preparation method includes steps that cracking garden waste under a high temperature to obtain garden waste biomass charcoal and combustible gas; mixing raw material of the soil conditioner with 16-20% of garden waste biomass charcoal according to the total raw material weight of the soil conditioner, melting, granulating and gathering granules; cooling the gathered granules under negative pressure, and sieving; enveloping the sieved granules, packaging and delivering to obtain the garden waste biomass charcoal-based soil conditioner. The garden waste biomass charcoal-based soil conditioner is rich in nutrient substance, coordinating and durable in nutrient element release, high in fertilizer nutrient use efficiency, capable of effectively improving and fertilizing the soil, improving the fertilizer utilization rate, increasing the organic substance content of the soil, improving the moisture and fertility preserving ability of the soil and accelerating the crop growth, and also capable of obviously improving the crop output and improving the crop quality.

The invention discloses a compound chitooligosaccharide foliar fertilizer, which contains chitooligosaccharide components. Effectively improve fruit expansion, sugar content, fragrance and color; increase plant stress resistance and resistance to disease and insect pests, so as to increase crop yield, improve crop quality, and reduce pesticide residues.

The invention discloses a method for producing a specialized organic fertilizer for protected cultivation by silkworm excrement fermentation, comprising the following steps of: inoculating active microorganisms to silkworm excrement, uniformly stirring, fermenting at high temperature, drying, granulating and sieving. According to the invention, silkworm excrement can be fully utilized to save resources and solve the pollution problem of waste silkworm excrement. The pH value of the silkworm excrement specialized organic fertilizer prepared in the invention ranges from 7.0 to 8.0, thus effectively solving the soil acidification problem frequently caused in protected cultivation. The organic fertilizer maintains original growth activating substances of silkworm excrement, contains a lot of beneficial microorganisms and more than 50% of organic matters, can be used to increase crop yield, improve crop quality and fertilize and improve soil, and is a good fertilizer for the production of nuisance free agricultural products.