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Lythidathion-coated controlled release granule

A technology of thiazolphos and granules, which is applied in the field of thiazolphos-coated controlled-release granules, can solve the problems of crop injury, inconvenient operation, and the control effect cannot be kept constant for a long time, and achieve a long-lasting and constant control effect

Active Publication Date: 2013-01-16
LIANBAO CROP TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the agricultural field at the present stage, the traditional method is to make thiazophos into liquid or granule for soil mixing or root irrigation. cause soil compaction
More importantly, after application, thiazophos granules or microgranules are greatly affected by soil temperature, humidity and soil structure, and its active ingredients will become lower and lower with time, and the control effect cannot be kept constant for a long time, so it cannot be effective. long-term crop protection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: 10% Thiazophos coated controlled-release granules

[0031]In terms of weight percentage, take 10% of thiazolphos technical substance and 60% of diatomaceous earth, mix evenly, granulate in a granulator, and control the particle size to 0.5-2.0mm, and the obtained granules are dried and sieved.

[0032] The obtained particles are placed in a fluidized bed and blown into a fluidized state, and preheated so that the particles in the fluidized state are at 70°C. Then mix 20% cellulose and 6% sulfonated paraffin evenly, then add 4% cyclohexanone and mix thoroughly to form a coating fluid, and use a delivery pump to deliver the coating fluid to the pressure at a speed of 1000mL / h. At the nozzle of the atomization device of 0.4Mpa.

[0033] The atomized coating solution is sprayed onto the particles in a fluidized state, so that the coating solution and the pesticide particles are fully mixed, and the coating is evenly coated. The thickness of the coating is contro...

Embodiment 2

[0034] Example 2: 20% Thiazophos coated controlled-release granules

[0035] In terms of weight percentage, take 20% of thiazophos technical substance and 45% of kaolin, mix evenly, and granulate in a granulator, the particle size is controlled at 0.5-2.0mm, and the obtained granules are dried and sieved.

[0036] The obtained particles are placed in a fluidized bed and blown into a fluidized state, and preheated so that the particles in the fluidized state are at 70°C. Then mix 10% urea-formaldehyde resin and 20% paraffin evenly, then add 5% acetone and mix thoroughly to form a coating fluid, and use a delivery pump to transport the coating fluid to a pressure of 0.3Mpa at a speed of 800mL / h at the nozzle of the atomizer.

[0037] The atomized coating solution is sprayed onto the particles in a fluidized state, so that the coating solution and the pesticide particles are fully mixed, and the coating is evenly coated. The thickness of the coating is controlled at 0.1-0.5mm an...

Embodiment 3

[0038] Example 3: 40% Thiazophos coated controlled-release granules

[0039] In terms of weight percentage, take 40% of thiazolphos technical substance and 30% of clay, mix them uniformly, granulate in a granulator, control the particle size to 0.5-2.0mm, and dry and sieve the obtained granules.

[0040] The obtained particles are placed in a fluidized bed and blown into a fluidized state, and preheated so that the particles in the fluidized state are at 70°C. Then mix 17% cellulose and 9% petroleum resin evenly, then add 4% methyl ethyl ketone and mix thoroughly to form a coating solution, and use a delivery pump at a speed of 1200mL / h to transport the coating solution to a pressure of 0.5 Mpa at the nozzle of the atomizer.

[0041] The atomized coating solution is sprayed onto the particles in a fluidized state, so that the coating solution and the pesticide particles are fully mixed, and the coating is evenly coated. The thickness of the coating is controlled at 0.1-0.5mm ...

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Abstract

The invention relates to the field of pesticide preparations and discloses a lythidathion-coated controlled release granule. The lythidathion-coated controlled release granule consists of the following components in percentage by weight: 1-40 percent of lythidathion, 1-70 percent of carrier, 1-20 percent of coating material, 1-10 percent of film-forming assistant and 0.5-5 percent of organic solvent. According to the lythidathion-coated controlled release granule disclosed by the invention, the lythidathion is used as an active component and proper materials such as film-forming assistant, coating material and carrier are selected to prepare the lythidathion-coated controlled release granule; and the lythidathion-coated controlled release granule has durable and constant preventing effect on underground pests such as eelworm and grub. Compared with the traditional lythidathion pesticide preparation, the lythidathion-coated controlled release granule has the advantage that crops can be effectively protected from being intruded by the underground pests such as the grub and the eelworm.

Description

technical field [0001] The invention relates to the field of pesticide preparations, in particular to a thiazophos-coated controlled-release granule. Background technique [0002] Thiazophos is a broad-spectrum nematicide, acaricide and soil insecticide. It has strong contact activity and has obvious systemic poisoning effect on a variety of nematodes, insects and mites. Resistant to some pests, it is also highly active. The nematodes that can be controlled include about 20 kinds of ectoparasitic nematodes on aboveground stems and leaves, endoparasitic nematodes on underground plant roots, semi-endoparasitic nematodes, and ectoparasitic nematodes. The agricultural and health pests that can be controlled include more than 30 species of Thysanoptera, Hemiptera, Lepidoptera, Coleoptera, Diptera, and Orthoptera. Mites include cotton spider mites, orange panonychia and so on. Nematodes have become one of the important and intractable pests that harm crops. Unlike conventional ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/02C05G3/60
Inventor 王洲卢桂鲜
Owner LIANBAO CROP TECH
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