Special nutrient set of fertilizer for cotton
A set fertilizer and cotton technology, applied in the direction of fertilizer mixture, application, fertilization methods, etc., can solve the problems of high price and limited production of controlled-release fertilizers
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[0020] The preparation method of the above-mentioned cotton-specific nutritional package fertilizer of the present invention, the steps are as follows:
[0021] (1) Preparation of seedling fertilizer:
[0022] Take peat, superphosphate, zinc sulfate, boric acid, chelated iron fertilizer in proportion, mix evenly, and granulate with a disc granulator according to the prior art. The preferred particle size is 2-3 mm.
[0023] (2) Preparation of planting fertilizer
[0024] A, humic acid controlled-release nitrogen fertilizer, the present invention provides the following preparation method, but not limited thereto:
[0025] Mix the epoxy resin and triethylenetetramine evenly at a ratio of 1:0.10-0.12, and prepare the adhesive for use.
[0026] Take granular urea or ammonium nitrate with a particle size of 2 to 3 mm as the core fertilizer, preheat it in the drum to 65°C-70°C, spray the above binder on the rotating fertilizer particles, and when the surface of the fertilizer par...
Embodiment 1
[0041] Cotton special nutritional package fertilizer composition by mass is as follows:
[0042] 20 kg of seedling fertilizer, 40 kg of planting fertilizer, and 40 kg of topdressing fertilizer.
[0043] Preparation:
[0044] (1) Preparation of seedling fertilizer:
[0045] Get 60 kilograms of peat charcoal, 23 kilograms of calcium superphosphate, 8 kilograms of zinc sulfate, 5 kilograms of boric acid, 4 kilograms of chelated iron fertilizers, mix evenly, granulate with disc granulator according to prior art, particle size 2-3 millimeter.
[0046] (2) Preparation of planting fertilizer
[0047] A. Preparation of humic acid controlled-release nitrogen fertilizer:
[0048] Take 1 kg of epoxy resin (produced by Wuhan Kaitong Fine Chemical Co., Ltd.), and 0.12 kg of triethylenetetramine, mix them evenly, and prepare them as adhesive for later use.
[0049] Take 100 kg of granular urea with a particle size of 2 to 3 mm, preheat it to 65°C-70°C in a drum, and spray the above-ment...
Embodiment 2
[0054] Cotton special nutritional package fertilizer composition by mass is as follows:
[0055] 15 kg of seedling fertilizer, 30 kg of planting fertilizer, and 55 kg of topdressing fertilizer.
[0056] The preparation method of nursery fertilizer, field planting fertilizer and topdressing fertilizer is the same as embodiment 1.
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