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Granules as well as preparation method and application thereof

A granule and particle size technology, which is applied in the field of agricultural anti-ultraviolet and granule applied to corn, can solve the problems of unstable drug effect of Bt preparations, affecting the promotion and use of biological pesticides, and short duration of effect, so as to achieve beneficial The effect of pest control

Active Publication Date: 2021-11-19
INST OF PLANT PROTECTION CHINESE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, commercially available Bt insecticides mainly enrich the fermentation products in the Bt fermentation broth, and then make preparations, which are mixed with various components such as Bt spores, parasporal crystals, and vegetative bodies. Among them, the content of parasporal crystals Low, poor stability, when used in the field, it is easy to be caused by ultraviolet radiation, rain erosion and other problems, resulting in unstable efficacy and short duration of Bt preparations, which affects the promotion and use of this type of biopesticide

Method used

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  • Granules as well as preparation method and application thereof
  • Granules as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 10% Bt G033A Granules

[0037] 1) Mix 100G033A raw powder, 20g ethyl cellulose, 40g pregelatinized starch, 10g sodium lauryl sulfate, 5g rose bengal and 815g sepiolite powder, grind it to 325 mesh, and put it into a disc granulator .

[0038] 2) Dissolve 10 g of polyvinyl alcohol 17-88 in 190 mL of water to prepare a 5% aqueous solution.

[0039] 3) Spray 5% polyvinyl alcohol 17-88 aqueous solution on the powder in the disc granulator gradually under the state of disc rotation, the obtained particles first pass through a 10-mesh sieve, and pass the particles below 10 mesh through a 20-mesh sieve Sieve to obtain particles below 10 mesh and above 20 mesh, and obtain granules with a particle size of 0.8 to 1.7mm after drying.

Embodiment 2

[0041] 10% Bt G033A Granules

[0042] 1) Mix 100G033A raw powder, 20g ethyl cellulose, 40g pregelatinized starch, 10g sodium lauryl sulfate, 5g rose bengal and 817g sepiolite powder, grind it to 325 mesh, and put it into a disc granulator .

[0043] 2) Dissolve 8g of polyvinyl alcohol 17-88 in 392mL of water to prepare a 2% aqueous solution.

[0044] 3) Gradually spray 2% polyvinyl alcohol 17-88 aqueous solution on the powder in the disc granulator under the rotating state of the disc, and the obtained particles first pass through a 30-mesh sieve, and pass the particles below 30 mesh through a 40-mesh sieve Sieve to obtain particles below 30 mesh and above 40 mesh, and obtain granules with a particle size of 0.38 to 0.55 mm after drying.

Embodiment 3

[0046] 10% Bt G033A Granules

[0047] 1) Mix 100G033A raw powder, 20g ethyl cellulose, 40g pregelatinized starch, 10g sodium lauryl sulfate, 5g rose bengal and 820g sepiolite powder, grind it to 325 mesh, and put it into a disc granulator .

[0048] 2) Dissolve 5 g of polyvinyl alcohol 17-88 in 495 mL of water to prepare a 1% aqueous solution.

[0049] 3) Spray 1% polyvinyl alcohol 17-88 aqueous solution on the powder in the disc granulator gradually under the rotating state of the disc, and the obtained particles first pass through a 30-mesh sieve, and pass the particles below 30 mesh through a 50-mesh sieve Sieve to obtain particles below 30 mesh and above 50 mesh, and obtain granules with a particle size of 0.27 to 0.55 mm after drying.

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Abstract

The invention relates to granules as well as a preparation method and application thereof. The granules are spheres with the particle size of 0.2-2mm, and comprises an active component, a first component, a second component, a third component and a fourth component; the active component is bacillus thuringiensis; the first component is at least one of polyvinyl alcohol, sodium carboxymethyl cellulose, methyl cellulose, xanthan gum, sodium polyacrylate, soluble starch and gelatin; the second component is at least one of ethyl cellulose, hydroxyethyl cellulose, hydroxy propyl cellulose, cellulose acetate, pregelatinized starch, cross-linked polyvinylpyrrolidone and cross-linked sodium polyacrylate; the third component is at least one of sodium dodecyl benzene sulfonate, an alkyl naphthalene sulfonate formaldehyde condensate, sodium lignin sulfonate, lauryl alcohol polyoxyethylene ether sodium sulfate and the like; and the fourth component is at least one of bentonite, kaolin, attapulgite, diatomite, argil, sepiolite powder and zeolite powder.

Description

technical field [0001] The invention relates to a granule, in particular to an agricultural anti-ultraviolet granule and a granule applied to corn. Background technique [0002] Agricultural pests are important factors that limit the high and stable yield of crops. The food engulfed by pests accounts for about 1 / 4 of the total output every year. For a long time, people have pinned their hopes on chemical pesticides, but the single use of chemical pesticides has faced problems such as environmental pollution, increased residual toxins, and human and animal poisoning. While controlling pests, it also kills natural enemies and destroys the ecological balance. [0003] Bacillus thuringiensis (Bt) is a Gram-positive bacterium widely distributed in nature, and its prominent feature is that it can produce parasporal crystal protein during spore formation. Parasporal crystal proteins are composed of one or more proteins, which have highly specific insecticidal activity, and these...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N63/23A01N25/12A01P7/04
CPCA01N63/23A01N25/12Y02A50/30
Inventor 张杰杨代斌耿丽丽束长龙袁会珠王泽宇
Owner INST OF PLANT PROTECTION CHINESE ACAD OF AGRI SCI