Controlled release fertilizer with natural insecticide efficacy
A technology of controlled-release fertilizer and slow-controlled-release fertilizer, applied in the field of natural plant sources and fertilizers, can solve the problems of large residues of agricultural products, increased labor force, low utilization rate, etc. The effect of insecticidal efficacy
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Embodiment 1
[0027] Embodiment 1. Preparation of medium-concentration slow-release nitrogen fertilizer with natural insecticidal effect.
[0028] a) Add 647.95kg of urea into the disc granulator, and spray water while turning to make the surface of urea fully wet.
[0029] b) Fully mix 272.05 kg of decomposed, dried and pulverized powdery tobacco waste with 50 kg of general clay.
[0030] c) Slowly add material b) into the disc granulator equipped with material a) so that material b) is evenly wrapped on the outer surface of material a).
[0031] d) Spray 30kg of resin coating agent on the outside of the product in c).
[0032] e) Convey d) to the dryer through the belt for drying.
[0033] f) Cool the product of e) through a cooler.
[0034] g) Sieving the product of f) to obtain a slow-release nitrogen fertilizer with a particle size of 1-4.75mm or 3.35-5.60mm and natural insecticidal effect.
Embodiment 2
[0035] Embodiment 2. preparation has the concentration part slow-release compound fertilizer in natural insecticidal effect
[0036] a) Add 50% compound fertilizer granules (N-P 2 o 5 -K 2 O=20-15-15) 500kg is put into the disc granulator, and 10kg of dissolved cellulose acetate and 10kg of dissolved ethyl cellulose are sprayed on the surface.
[0037] b) Slowly add 178kg of decomposed, dried and pulverized powdered tobacco waste and 200kg of decomposed, dried and pulverized powdered tea seed waste to the surface of the product in a), and at the same time slowly add 0.5kg of liquid gum arabic, Gelatin 0.5kg and polyvinyl alcohol 1kg.
[0038] c) The product in b) is sent to the dryer through the belt conveyor for drying.
[0039] d) cooling and sieving the product in c) to obtain a slow-controlled release compound fertilizer with a particle size of 3.35-5.60 mm and the effect of natural insecticides.
[0040] e) Sieve out the unqualified particles in d), grind them, and a...
Embodiment 3
[0042] Example 3. Preparation of high-concentration slow-release blended fertilizer with natural insecticidal efficacy.
[0043] a) 50% compound fertilizer (N-P 2 o 5 -K 2 O=30-0-20) Add 600kg of granules into the disc granulator, and spray 20kg of resin coating solution while rotating.
[0044] b) Wrap the mixture of 130kg of decomposed powdered tea seed waste and 50kg of common clay on the outer surface of the product in a).
[0045] c) The product of b) is dried and cooled.
[0046] d) Sieve the product of c) to obtain slow-release nitrogen and potassium fertilizer granules with a particle size of 3.35-5.60mm and natural insecticidal effect.
[0047] e) After pulverizing the unqualified products with particle size screened out in d), wrap them on the outer surface of 200kg of monoammonium phosphate particles according to the process of a).
[0048]f) The product d) and the product e) are evenly blended to obtain a high-concentration slow-release blended fertilizer with...
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