28-11-2019 дата публикации
Номер: US20190359534A1
The invention relates to the field of controlled release fertilizer technology, and in particular to a special film-coated controlled release fertilizer for peanut in saline-alkali soil, which comprises an outer layer, an intermediate layer and an inner layer, integrates the ingredients for salt resistance improvement, etiolated seedling prevention, disease and pest control, growth promotion and pod plumpness promotion, controls the release period, improves the fertilization efficiency without the need of top application throughout the growth period, and saves labor cost. 1. A special film-coated controlled release fertilizer for peanut in saline-alkali soil , comprising an outer layer , an intermediate layer and an inner layer , wherein the raw materials in each layer and the proportions thereof are as follows:the outer layer comprises: 30-50 parts of urea formaldehyde powder, 20-40 parts of fermented livestock and poultry manure, 30-50 parts of urea, 10-15 parts of hyperbranched polyamide, 0.5-2 parts of ferrous sulfate, 0.01-0.05 part of chitosan oligosaccharide, and 0.3-0.5 part of celest,the intermediate layer comprises: 65-85 parts of gypsum, 15-30 parts of humic acid, 0.3-0.5 part of celest, and 65-80 parts of urea formaldehyde powder, andthe inner layer comprises: 60-80 parts of potassium dihydrogen phosphate, 30-50 parts of urea, 10-20 parts of seaweed extract, and 20-50 parts of adhesive.2. The special film-coated controlled release fertilizer for peanut in saline-alkali soil according to claim 1 , wherein the raw materials in each layer and the proportions thereof are as follows:the outer layer comprises: 40 parts of urea formaldehyde powder, 30 parts of fermented livestock and poultry manure, 40 parts of urea, 13 parts of hyperbranched polyamide, 2 part of ferrous sulfate, 0.03 part of chitosan oligosaccharide, and 0.4 part of celest,the intermediate layer comprises: 75 parts of gypsum, 25 parts of humic acid, 0.5 part of celest, and 75 parts of urea ...
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