54results about How to "Reduce nitrogen loss" patented technology

The invention relates to a method for preparing an organic agriculture biochar compound fertilizer. The method comprises the following steps: (1) performing high-temperature pyrolysis on air dried crop straws or excrements of poultry and livestock in a charring furnace, and collecting biochar after cooling; (2) mixing the biochar, excrements of poultry and livestock and powdered rock phosphate, adding an EM bacterium solution and water, controlling the moisture content to be 40-50 percent, uniformly stirring and mixing, and pouring the solution into a fermenting tank for performing closed fermentation; (3) drying the fermentation product which is thoroughly decomposed, so that the moisture content of the fermentation product is 20-30 percent; (4) mixing the dried fermentation product, potassium mineral powder and clay, uniformly mixing and crushing; (5) granulating the crushed materials, and drying to obtain the biochar compound fertilizer. Components contained in the biochar compound fertilizer disclosed by the invention are components allowed to be used in national standards of organic products in China, the compound fertilizer is processed in the physical process and can be used in organic farms, and the gap of biochar compound fertilizers in organic agriculture is filled.

The invention discloses a biomass charcoal and an application of the biomass charcoal in compost. The biomass charcoal is prepared through the following steps: grinding plant twigs, in the protection of nitrogen gas, carrying out a high-temperature heating treatment on the plant twigs in a cracking furnace, then cooling, grinding, and sieving with a sieve with a size of 80 to 100 meshes so as to obtain the biomass charcoal. The preparation method takes plant twigs as the raw materials, then prepares biomass charcoal under a high temperature; then the biomass charcoal is applied to a compost composed of poultry manure, the biomass charcoal can reduce the nitrogen element loss in the compost, also promotes the fermentation process and compost maturity of the compost, and thus improves the application effect of the organic fertilizer. A novel nitrogen preserving method during the poultry manure compost fertilization process is provided.

The invention discloses a method using phosphogypsum as the raw material to produce ammonium sulfate, and the method comprises steps as follows: 1750 shares of crude phospho gypsum which contains 20 percent of free water is taken, and 2 to 5 percent of the amount of the crude phospho gypsum of activator is added the aging for 2 to 8 days; then, a reaction tank and an ammonium carbonate solution are added to carry out the conversion reaction, in the reaction process, the concentration of the ammonium carbonate solution is 40 to 42 percent, the carbonized ratio CO2/2NH3 is 1.34 to 1.37, the quality is 1840 to 2000g, the reaction temperature ranges from 55 to 70 DEG C, the stirring speed ranges from 200 to 240 turns per minute, and the reaction time ranges from 1.5 to 2.5 hours; after filtration, the ammonium sulfate solution is obtained, the ammonium sulfate solution is neutralized by sulfate to obtain a PH value ranging from 6.9 to 7.02, and then, an ammonium sulfate excellent grade product is obtained through multi-effect evaporation crystallization and drying. The method can solve problems of waste piling and pollution of phosphogypsum, which restrict the development of the phosphate chemical industry, and realize the resource utilization of the phosphogypsum.The production cost is low, and the industrial production can be realized.

The invention relates to a semi-forced ventilation static aerobic sludge composting method belonging to the technical field of environmental protection. Precast conditioning materials are prepared, and the sludge and the conditioning materials are mixed according to proportion to form mixture. The mixture is piled up to form a strip heap with a trapezoid cross section and the lower part of the strip heap is provided with an air tunnel. One end of the heap is provided with a stop wall and the surface of the heap is covered by a thin film. When temperature rises, a fan is started to change fresh air and lower the temperature of the fermentation heap, and then the compost is sieved out after natural fermentation. The method has the advantages of low energy consumption, simple operation, good composting quality, low operation cost and little influence on environment. The prepared composting is easily absorbed by crops and can be directly used for landscaping, soil remediation and agri-fruit planting, etc.

The invention relates to a method for clean production of bioorganic fertilizer by using attapulgite. The bioorganic fertilizer comprises, by mass, 10-20 parts of attapulgite, 40-60 parts of cow dung, 15-30 parts of chicken manure, 10-20 parts of crop straws, 5-10 parts of plant ash, and 0.05-0.5 parts of a bioactive inoculant. The production method of the bioorganic fertilizer comprises the following steps: uniformly mixing the bioactive inoculant with a small amount of attapulgite, chicken manure and cow dung, carrying out spreading cultivation on the above obtained mixture, stacking the spreading cultivated material and remaining raw materials, controlling the water content and the carbon-to-nitrogen ratio, and carrying out high temperature aerobic fermentation to obtain the bioorganic fertilizer. The method has the advantages of simple process, obvious reduction of discharge of stink in the composting process, increase of the activity and the quantity of microbes, promotion of the fermentation process, increase of the decomposition degree of compost, and improvement of the soil structure, so the yield increase and the quality improvement of agricultural products are promoted, and the economy income of peasants is increased.

The invention relates to a synergistic stable nitrogen fertilizer and a preparation method thereof. The fertilizer comprises the following components: a nitrogen fertilizer, medium trace elements, a nitrogen regulating synergist (urease inhibitor and/or nitrification inhibitor) and a carbon source synergist, wherein the nitrogen fertilizer is urea, and the medium trace elements comprise calcium, magnesium, sulfur, boron, silicon, iron and zinc. The weight part ratio of the nitrogen fertilizer to the medium trace elements to the nitrogen regulating synergist to the carbon synergist is 1: 0.05-0.1: 0.001-0.1: 0.1-0.3. By adding a certain amount of the carbon synergist and the nitrogen regulating synergist into the fertilizer, the release time and rate of the nitrogen fertilizer can be regulated, the fertilizer efficiency is slow and stable, the fertilizer meets various nutritional requirements of crops in different growth periods, solves the contradiction between crop fertilizer requirement and soil fertilizer supply, reduces greenhouse gas emission and nitrogen leaching loss, and is a novel synergistic stable nitrogen fertilizer.

The invention relates to the field of technologies for producing biological organic fertilizers, in particular to a special microbial fertilizer for radix angelicae sinensis and a method for preparing the special microbial fertilizer. The special microbial fertilizer comprises an organic fertilizer, weathered coal and organic carriers. The organic fertilizer is livestock excrement, and the organic carriers contain rape pseudomonas fermentation liquor and bacillus muralis fermentation liquor. The special microbial fertilizer particularly comprises, by weight, 50-80 parts of the livestock excrement, 20-60 parts of the weathered coal, 5-15 parts of the rape pseudomonas fermentation liquor and 5-15 parts of the bacillus muralis fermentation liquor. According to the technical scheme, the special microbial fertilizer and the method have the advantages that as shown by results of fertilizer efficiency comparative tests in places such as Weiyuan, Minxian and Longxi in the Gansu province over 3 years, obvious soil-borne disease resistance and yield increase effects are realized by the special microbial fertilizer which is applied to the radix angelicae sinensis, radix angelicae sinensis root rot prevention and treatment effects of the special microbial fertilizer are 45%-48%, and the yield increase is 12%-16%.

The invention relates to the technical field of preparation of organic fertilizers, and particularly discloses an organic fertilizer and a preparation method and application thereof. According to theorganic fertilizer and the preparation method, grape branches, fruit stems, peel dregs and sludge in wastewater of a wine factory are composted through a composite microorganism strain and through a manner of two times of fermentation to obtain the organic fertilizer. Environment pollution caused by branches, sludge and other wastes is solved, effective utilization of wastes is achieved, and the prepared organic fertilizer can increase organic matters in soil, improve physical and chemical properties of soil, is particularly suitable for use as an organic fertilizer in grape plantation, and isof great significance for reduction, recycling and reutilization in grape industry recycling economy.

The invention relates to the technical field of planting, and particularly relates to a method of planting the herbal coffee bean. The method comprises the steps of the soil lot treatment phase, the seeding phase and the field management phase, the seeding phase comprises seed selection, seed preparation and planting, the field management phase comprises fertilizer topdressing and pest control. The herbal coffee combined with fertilizers is mainly prepared from, biochemical fulvic acid, plant ash, potassium permanganate, chitosan hydrolysate, gastrodia elata, fructus forsythiae, selenium enrichment nutritional agent, poly-aspartic acid, urea, cotton, superphosphate, diammonium phosphate, and potassium sulfate. The method of planting the herbal coffee bean can improve the survival rate of seedlings, when the herbal coffee bean is combined in use with fertilizer, the herbal coffee bean is high in selenium enrichment content and yield, high in survival rate, and low in the prevalence rate.

The invention belongs to the technical field of landscape plant cultivation and provides a lilium casa blanca culture medium prepared from sludge compost and a preparation method of the lilium casa blanca culture medium. The medium is prepared by mixing turf soil, sludge mixed fertilizers, nursery garden soil and perlite according to a volume ratio of 1:3:5:2. The culture medium is extensive in raw material source, low in cost, high in nutrient content, reasonable in structure, convenient for lilium casa blanca to absorb and effective in promotion of lilium casa blanca growth and blossoming. By preparation of the culture medium from the sludge compost, turf soil consumption is reduced, non-renewable media are saved, urban sludge recycling is realized, environmental pollution is abated, andsocial benefits and economic benefits are achieved.

The invention discloses an organic and inorganic compound fertilizer. The organic and inorganic compound fertilizer is prepared from the following raw materials in parts by weight: 9-11 parts of pine needle powder, 25-28 parts of lard stearin, 23-24 parts of coco coir, 4-5 parts of wheat gluten, 14-16 parts of vinegar residues, 2.4-2.6 parts of ferric citrate, 4-6 parts of potassium carbonate, 16-18 parts of compost coarse particle, 22-25 parts of sunflower stalks, 1.3-1.5 parts of dodecyldimethyl betaine, 0.7-0.9 part of tween 80, 14-16 parts of bentonite, and a proper amount of water. The fertilizer is high in fertilizer efficiency and is rich in various microelements; inorganic fertilizers are reasonably added on the basis of a large number of organic matter raw materials such as the lard stearin, the coco coir and the wheat gluten, quick action of the inorganic fertilizers, long action of organic fertilizers, providing of plant nutrients and improvement of fertilized soil are combined organically, so that yield of crops is improved, quality of agricultural products is improved, and soil is optimized and improved.

The invention provides an organic nutritional energy element of a nitrogen fertilizer and belongs to the field of fertilizers, aiming at solving the technical problem that the utilization rate of an existing nitrogen fertilizer is low. The organic nutritional energy element of the nitrogen fertilizer is prepared from the following components in parts by weight: nitrogen, phosphorus pentoxide, potassium oxide, magnesium oxide, copper, iron, manganese, zinc, boron, molybdenum and organic nutritional substances. The applying amount of the nitrogen fertilizer is reduced by about 20%, and the growth of plants can also be good; the yield of crops is increased, and the planting benefits are improved; the incomes of farmers are increased; and chemical fertilizer residues in soil, underground water, air pollution and agricultural products are reduced when a chemical fertilizer is applied. The product is a plant nutritional agent preparation formed by chelating plant microelements and organic matters; the combination of a nitrogen element and soil organic matters is accelerated by mainly reducing the loss of the nitrogen element; and efficient utilization of the nitrogen element is realized through a plurality of manners of improving the content of residual nitrogen in the soil, improving the activity of soil microorganisms, directly improving the utilization of the nitrogen element and the like.

The invention belongs to the field of soil and environment, and mainly relates to slow-release urea fertilizer comprising a heavy metal cadmium passivation agent and a preparation method. The fertilizer comprises urea, a biochemical inhibitor and a soil heavy metal cadmium passivation material according to a weight proportion of 1:0.001-0.1:0.05-0.5. The heavy metal cadmium passivation material comprises one or multiple of charcoal modified by hydrochloric acid, powdered rock phosphate modified by hydrochloric acid, sepiolite modified by hydrochloric acid and lime. Cadmium in medium-mild cadmium contaminated soil can be controlled within a reasonable range by applying the fertilizer for several times, so that cadmium absorbed by crops can be reduced, accumulative-state cadmium of the cropscan be reduced, and intake of cadmium content by people can be reduced; crop yield can be increased, and economic benefit can be increased.

The invention provides a preparation method of a urea melt absorption-release synchronous nitrogen fertilizer. The method comprises the following steps: formaldehyde and urea are used to melt, a flowmeter is used for metering, then a high pressure sprayer is used to spray the molten urea solution into a drum granulator and perform liquid drum granulation on the preheated and ground quick-acting nitrogen fertilizer and solid control agent, and the absorption-release synchronous nitrogen fertilizer is formed after drying, cooling and screening. By adopting the fertilizer, the nitrogen release rate is basically synchronous to the nitrogen absorption rate in each stage of the whole growing process of the crop, the utilization rate is up to 65%-80%, more than 90% of nitrogen which is not absorbed can not be lost, the soil environment can be protected and the biochemical characters of soil environments and soil can be protected; and the fertilizer has the function of preserving nutrient and water. The technology of the invention is easy to improve and convenient to operate.

The invention relates to a synergistic stable compound fertilizer and a preparation method thereof. The fertilizer comprises the following components: nitrogen fertilizer, phosphate fertilizer, potashfertilizer, medium trace elements, a nitrogen regulating synergist (urease inhibitor and/or nitrification inhibitor) and a carbon source synergist, wherein the nitrogen fertilizer is urea, the phosphate fertilizer comprises calcium superphosphate and triple superphosphate, the potash fertilizer comprises potassium chloride and potassium sulfate, the medium trace elements comprise calcium, magnesium, sulfur, boron, silicon, iron and zinc, and the weight part ratio of the nitrogen fertilizer to the phosphate fertilizer to the potash fertilizer to the medium trace elements to the nitrogen regulating synergist to the carbon synergist is 1: 0.3-0.5: 0.8-1: 0.05-0.1: 0.001-0.1: 0.1-0.3. By adding a certain amount of the carbon synergist and the nitrogen regulating synergist into the fertilizer,the release time and the release rate of the nitrogen fertilizer are regulated, and various nutritional requirements of crops in different growth periods are met. Greenhouse gas emission and nitrogenleaching loss are reduced, and the compound fertilizer is a novel synergistic stable compound fertilizer.

The invention discloses a method for controlling the pH value of a rice field and improving the nitrogen fertilizer utilization rate of the rice field through duckweed in the field of agricultural production. The method comprises the following steps that 1, duckweed introduction is conducted, and duckweed is introduced in the seedling stage; (2) the duckweed is accompanied, growth of the duckweed is promoted or inhibited in the growth period, the duckweed is just fully distributed on the water surface, the total thickness of floating duckweed leaves is 1-3 mm, about 2-4 layers of duckweed are overlapped, and the dry weight of the duckweed is 20 +/-10 g/m < 2 > at the moment, the problems that an existing rice field is unstable in pH value and low in nitrogen fertilizer utilization rate are solved, the nitrogen fertilizer utilization rate of the rice field is increased, and the method can be used for rice planting.

The invention discloses a seaweed organic fertilizer, which is prepared from the following raw materials (by weight): 54-56 parts of seaweed slag, 22-24 parts of activated sludge, 10-11 parts of peanut meal, 4-5 parts of sodium carboxymethyl starch, 8-10 parts of peat powder, 3-4 parts of sodium dihydrogen phosphate, 7-9 parts of potassium chloride, 35-37 parts of compost coarse particle, 40-44 parts of sunflower straw, 2.5-2.8 parts of dodecyl dimethyl betaine, 1.8-2.2 parts of Tween 80, 14-16 parts of bentonite and a proper amount of water. according to the organic fertilizer, seaweed slag obtained after processing of seaweed is used as the main raw material, and the seaweed slag and other raw materials such as activated sludge, etc. are fermented. Thus, secondary utilization of waste resources is realized. In cooperation with raw materials such as peat powder, potassium chloride, etc., nutrient content of the fertilizer is enriched. Natural active components such as lots of phytohormone in the seaweed fermented product also can promote growth of plant root system and leaf stems and enhance stress resistance of plants.

The invention provides a method for increasing the humic acid content of organic solid waste compost by using a sustainable catalytic material, and belongs to the technical field of solid waste treatment and recycling. The method comprises the following steps: crushing organic solid wastes, and adjusting the carbon-nitrogen ratio and the water content; composting the compost raw material, and adding a catalytic material to obtain a compost product, wherein the catalytic material comprises manganese dioxide, ferrous oxide, biochar, modified biochar and/or a manganese dioxide and biochar combined modified material. The catalytic material has the effect of catalyzing humic acid precursor compounds including polyphenols, quinones, organic acids and other small molecular compounds to form humic acid through chemical reaction condensation, so that the content of humic acid in compost fermentation is increased. The catalytic material is further fired and molded for composting, so that the humic acid content is favorably improved, and the cyclic utilization of the catalytic material is realized.

The invention discloses summer black grape special fertilizer with a high phosphorous release rate, and relates to the technical field of fertilizer. The summer black grape special fertilizer is prepared from the following raw materials, in parts by weight: 30-40 parts of ammonium chloride, 20-30 parts of monoammonium phosphate, 17-25 parts of modified phosphate rock powder with a high phosphorousrelease rate, 18-25 parts of potassium chloride, 150-180 parts of decomposed farm manure, 2-4 parts of silicon fertilizer, 3-5 parts of eggshell, 3-5 parts of bone meal, 0.2-0.5 part of nitrificationinhibitor, 0.2-0.4 part of zinc sulfate, 0.2-0.4 part of EDTA (ethylene diamine tetraacetic acid) chelated iron, 0.1-0.3 part of EDTA chelated manganese, 0.1-0.3 part of sodium selenite, 0.5-1 part of sodium borate and 3-7 parts of soil conditioner. The summer black grape special fertilizer uses the modified phosphate rock powder with the high phosphorous release rate and monoammonium phosphate cooperatively, the fertilizer effect is durable and stable, the utilization rate of phosphorus is improved, the ratio of organic and inorganic nutrients in the special fertilizer is reasonable, and thespecial fertilizer can ensure the demands for normal growing and fruiting of summer black grape plants in different stages, and has the outstanding effect on improving the yield and the quality of summer black grapes.

The invention discloses a method for promoting the aerobic composting maturing process and improving the composting quality, which comprises the following steps: performing aerobic composting fermentation maturing on a mixture of an organic material and maturing-promoting mineral particles, the maturing-promoting mineral particles comprise mineral particles separated from coal or coal gangue before combustion or chemical conversion, the chemical conversion comprises coal pyrolysis, coal gasification, coal liquefaction, coal dry distillation or coal coking. The method provided by the invention can promote the aerobic composting process and improve the composting quality.

The invention relates to a high-efficiency composting microbial inoculum based on gradient conversion of organic matters into human excrement PPLC as well as a preparation method and application thereof, and belongs to the technical field of excrement composting treatment. The problems that an existing fungicide is low in human excrement treatment speed, large in nitrogen loss and the like are solved. The method comprises the following steps: mixing a mixed microorganism bacterium solution consisting of bacillus altitudinis, bacillus halotolerant, bacillus methylotrophicus, azotobacter chroococcum, bacillus cereus, candida utilis and bacillus amyloliquefaciens with an immobilized carrier to prepare the immobilized microbial agent which can be applied to treatment of human excrement in the latrine; and the main components such as protein, soluble polysaccharide, grease, cellulose and the like are converted in a gradient manner. The efficient composting microbial inoculum obtained by the invention is used for degrading human excrement, so that the content of COD (Chemical Oxygen Demand) and ammonia nitrogen in the excrement can be reduced, the loss of nitrogen in the composting process of the human excrement is reduced, the temperature rise stage of composting can be quickly reached, the composting process of the excrement is accelerated, the composting time is shortened, and the resourceful treatment of the human excrement is realized.