Special coated controlled-release fertilizer for peanuts in acid soil and preparation method thereof
A special bag, acid soil technology, applied in the field of controlled-release fertilizers, can solve the problems of time-consuming top dressing, difficult control of diseases and insect pests, insufficient calcium ions in the soil, etc., and achieve the effect of saving labor costs and improving fertilization efficiency.
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Embodiment 1
[0033] Coated controlled-release fertilizer for peanuts in acidic soil consists of an outer layer, a middle layer and an inner layer, and the raw materials and proportions of each layer are as follows:
[0034] Outer layer: 30 parts of urea-formaldehyde powder, 40 parts of fermented manure of livestock and poultry, 30 parts of urea, 15 parts of hyperbranched polyamide, 0.01 part of chitosan oligosaccharide, 0.5 part of Shilashi,
[0035] Middle layer: 65 parts of lime nitrogen, 30 parts of humic acid, 0.3 parts of Shilax, 0.5 parts of chlorpyrifos, 62 parts of urea-formaldehyde powder,
[0036] Inner layer: 80 parts of potassium dihydrogen phosphate, 30 parts of urea, 20 parts of seaweed extract, 20 parts of adhesive.
[0037] The hyperbranched polyamide is an aliphatic hyperbranched polyamide, and the branching algebra is 2.0.
[0038] Preparation:
[0039] (1) Mix potassium dihydrogen phosphate, urea, seaweed extract and binder in the inner layer raw materials, granulate a...
Embodiment 2
[0043]Coated controlled-release fertilizer for peanuts in acidic soil consists of an outer layer, a middle layer and an inner layer, and the raw materials and proportions of each layer are as follows:
[0044] Outer layer: 30 parts of urea-formaldehyde powder, 40 parts of fermented manure of livestock and poultry, 30 parts of urea, 15 parts of hyperbranched polyamide, 0.01 part of chitosan oligosaccharide, 0.5 part of Shilashi,
[0045] Middle layer: 65 parts of lime nitrogen, 30 parts of humic acid, 0.3 parts of Shilax, 0.5 parts of chlorpyrifos, 62 parts of urea-formaldehyde powder,
[0046] Inner layer: 80 parts of potassium dihydrogen phosphate, 30 parts of urea, 20 parts of seaweed extract, 20 parts of adhesive.
[0047] The hyperbranched polyamide is an aliphatic hyperbranched polyamide, and the branching algebra is 3.0.
[0048] The preparation method is the same as in Example 1.
Embodiment 3
[0050] Coated controlled-release fertilizer for peanuts in acidic soil consists of an outer layer, a middle layer and an inner layer, and the raw materials and proportions of each layer are as follows:
[0051] Outer layer: 30 parts of urea-formaldehyde powder, 40 parts of fermented manure of livestock and poultry, 30 parts of urea, 15 parts of hyperbranched polyamide, 0.01 part of chitosan oligosaccharide, 0.5 part of Shilashi,
[0052] Middle layer: 65 parts of lime nitrogen, 30 parts of humic acid, 0.3 parts of Shilax, 0.5 parts of chlorpyrifos, 62 parts of urea-formaldehyde powder,
[0053] Inner layer: 80 parts of potassium dihydrogen phosphate, 30 parts of urea, 20 parts of seaweed extract, 20 parts of adhesive.
[0054] The hyperbranched polyamide is an aliphatic hyperbranched polyamide with a branching algebra of 4.0.
[0055] The preparation method is the same as in Example 1.
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