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2224 results about "Nitrogen fertilizer" patented technology

Nitrogen fertilizer is a compound that is added to plants or lawns to stimulate growth. The nitrogen stimulates chloroplasts in plants, which are responsible for the process of photosynthesis. Plants that do not have enough nitrogen will turn yellow and eventually perish from a lack of food.

Nitrogen fertilizer compound synergist and preparation method

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.
Owner:SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI

Special suspension liquid compound fertilizer for saline-alkali soil and preparation method of special suspension liquid compound fertilizer

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.
Owner:SOUTH CHINA AGRI UNIV

One-time nitrogen supply and fertilizer application method capable of improving applied nitrogen fertilizer effect of cured tobacco

InactiveCN102007843AStrong continuous nitrogen supply capacityEnhanced long-lasting nitrogen supply performanceFertilising methodsHorticultureRidgeHigh heat
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.
Owner:GUANGDONG INST OF ECO ENVIRONMENT & SOIL SCI +2

Dedicated fertilizer for producing green corn and preparation and application method thereof

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.
Owner:锦西天然气化工有限责任公司

Selenium and ferrum-enriched organic inorganic fertilizer and application method thereof

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.
Owner:广东海纳农业有限公司 +1

Process for treating nitrogen-containing wastewater by ion exchange and reclaiming ammonium nitrate

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.
Owner:TAIYUAN UNIV OF TECH

Polymorphic nitrogenous fertilizer and preparation method thereof

ActiveCN102936167AGuaranteed effective useReduce invalid releaseFertilizer mixturesDiseaseFiber
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.
Owner:安徽田间云生物科技有限公司

Method for aerially photographing crop canopy picture for crop nitrogen analysis and soil fertilization guidance by using unmanned aerial vehicle and aerial photograph equipment of unmanned aerial vehicle

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.
Owner:中国科学院遗传与发育生物学研究所农业资源研究中心
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