31results about How to "Effective release period extended" patented technology

The invention discloses a soil improvement type special slow-release fertilizer for oilseed rape. The fertilizer comprises the following components in percentage by weight: 20-40% of powdered urea, 20-35% of urea phosphate, 10-15% of potassium chloride, 20-30% of potash magnesium sulfate fertilizer, 3-6% of humic acid boron salt, 1-4% of humic acid calcium salt, 1-5% of humic acid magnesium salt, 0.005-0.02% of compound sodium nitrophenolate, 1-5% of slow release agent and 2.99-8% of auxiliary material, wherein the slow release agent comprises the following components in percentage by weight: 5-15% of N-hydroxymethyl acrylamide, 10-30% of unsaturated polyester resin, 4-10% of cyclohexanol, 5-13% of 2-butyl alcohol, 1-5% of talcum powder, 1-4% of kaolin, 1-6% of ethyl cellulose and the balance of distilled water. The invention also discloses a preparation method of the soil improvement type special slow-release fertilizer for oilseed rape.

The invention discloses a soil improvement type cotton dedicated sustained-release fertilizer comprising the following components by the weight percentage: 25-40% of powdered urea, 12-25% of urea phosphate, 15-30% of potassium chloride, 6-15% of a magnesium potassium sulfate fertilizer, 2-10% of humic acid zinc, 2-8% of humic acid boron, 1-5% of humic acid calcium, 1-4% of humic acid magnesium, 0.005-0.02% of sodium nitrophenolate, 1-5% of a sustained-release agent, and 3-8% of an auxiliary material. The sustained-release agent comprises the following components by the weight percentage: 5-15% of N-hydroxymethyl acrylamide, 10-30% of unsaturated polyester resin, 4-10% of cyclohexanol, 5-13% of 2-butyl alcohol, 1-5% of a talc powder, 1-4% of kaolin, 1-6% of ethyl cellulose, and the balance being distilled water. The invention also discloses a preparation method for the soil improvement type cotton dedicated sustained-release fertilizer.

The invention relates to a special fertilizer for a rice soil measurement formula and a preparation method thereof. The special fertilizer for the rice soil measurement formula comprises the following components in parts by weight: 40-70 parts of urea-ammonium nitrogenous fertilizer, 20-30 parts of urea phosphate, 20-30 parts of potassium chloride, 5-10 parts of neutral water soluble silicon fertilizer, 0.2-0.6 part of zinc sulfate, 0.2-0.5 part of ferrous sulfate, 0.2-0.4 part of borax, 0.01-0.1 part of compound sodium nitrophenolate, and 0.5-1 part of auxiliary material. The special fertilizer for the rice soil measurement formula can offer complete and balanced nutrients for rice lastingly and harmoniously, can be applied once without topdressing, can remarkably improve the quality and yield of the rice, has obvious economic benefit, and is applicable to most soil in rice planting areas in China.

The invention discloses a special biomass charcoal-based compound fertilizer for rapes. The biomass charcoal-based compound fertilizer comprises the following components in parts by weight: 11-15 parts of potash magnesium sulphate fertilizers, 15-20 parts of potassium chloride, 13-16 parts of fertilizer-grade dicalcium phosphate, 11-17 parts of urea phosphate, 25-30 parts of powdery urea, 5-13 parts of sorghum straw charcoal powder, 0.05-0.5 part of EDTA (Ethylene Diamine Tetraacetic Acid) chelated zinc, 0.05-0.5 part of EDTA chelated iron, 0.1-0.63 part of borax and 1-6 parts of auxiliary materials. The invention also discloses a preparation method of the special biomass charcoal-based compound fertilizer for the rapes. The special biomass charcoal-based compound fertilizer for the rapes, which is disclosed by the invention, can effectively improve and fertilize the soil, increase the content of soil organic matters, reduce the soil volume weight and enhance the moisture and fertility preserving capacity of the soil after being applied, is relatively high in fertilizer nutrient utilization efficiency and harmonious and lasting in nutrient element release, can be used for comprehensively and equivalently supplying the nutrients to the rapes, outstandingly increases the rape output, improves the rape quality and achieves an obvious economic benefit.

The invention discloses a biomass carbon-based composite fertilizer specially used for rice. The biomass carbon-based composite fertilizer comprises the following components in parts by weight: 8-15 parts of a potash magnesium sulphate fertilizer, 9-14 parts of potassium chloride, 13-20 parts of fertilizer grade dicalcium phosphate, 20-27 parts of urea phosphate, 25-30 parts of powdered urea, 5-10 parts of sunflower straw charcoal powder, 0.1-1 part of sodium silicate, 0.1-0.5 part of EDTA (ethylene diamine tetraacetic acid) chelating zinc, 0.05-0.5 part of EDTA chelating iron and 1-7 parts of auxiliary materials. The invention also discloses a preparation method of the biomass carbon-based composite fertilizer specially used for rice. According to the biomass carbon-based composite fertilizer specially used for rice and the preparation method, the biomass carbon-based composite fertilizer specially used for rice is rich in nutrient substances; the nutrient elements can be released and coordinated for a long time; fertilization is implemented in a disposable manner, and secondary fertilization is not needed or the secondary fertilization is implemented a little; the utilization efficiency of nutrients of the fertilizer is high; the property of soil can be improved, and the soil fertility is improved; furthermore, the rice yield can be obviously increased; the biomass carbon-based composite fertilizer has obvious economical benefits.