Kieselguhr insecticide, and preparation method and application thereof

An insecticide and diatomite technology, which is applied in the field of pesticides, can solve the problems of complex composition, unsatisfactory insecticidal effect, environmental pollution and the like, and achieves the effects of simple preparation method, suitability for industrial production and high insecticidal efficiency.

Active Publication Date: 2015-12-23
QINGDAO CHUANSHAN NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these pyrethrum-containing insecticides also have the disadvantages of complex components, unsatisfactory insecticidal effect and certain pollution to the environment. Therefore, further research and development of new products and new uses are needed for pyrethrum insecticides.

Method used

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  • Kieselguhr insecticide, and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 2

[0061] 1. Formula

[0062] A diatomaceous earth insecticide, comprising: 320-360 mesh amorphous SiO 2 The mass percentage content of 92% diatomite powder is 82%; the mass percentage content of 320-360 mesh pyrethrin is 1.8% of 25% pyrethrin powder and 16.2% of first-grade sepiolite powder.

[0063] 2. Preparation method

[0064] 1) material preparation: prepare the diatomite powder, pyrethrum powder and sepiolite powder of above-mentioned formula quantity;

[0065] 2) Mixing: After mixing the diatomaceous earth powder, pyrethrum powder and sepiolite powder in the prescribed amount, use a high-efficiency mixing unit to fully stir for 4 hours to obtain a mixed powder;

[0066] 3) Drying: Dry the mixed powder prepared in step 2) through an airflow flash dryer at a drying temperature of 140° C. and a drying time of 3 hours to obtain a dried powder;

[0067] 4) Classification: the dry powder obtained in step 3) is classified by air selection in a cyclone separator to obtain a pr...

Embodiment 3

[0069] 1. Formula

[0070] A diatomaceous earth insecticide, comprising: 320-360 mesh amorphous SiO 2 The mass percentage content is 95% of diatomite powder 91%; the mass percentage content of 320-360 mesh pyrethrin is 25% pyrethrin powder 1.5% and first-grade sepiolite powder 7.5%.

[0071] 2. Preparation method

[0072] 1) material preparation: prepare the diatomite powder, pyrethrum powder and sepiolite powder of above-mentioned formula quantity;

[0073] 2) Mixing: After mixing the diatomite powder, pyrethrum powder and sepiolite powder in the prescribed amount, use a high-efficiency mixing unit to fully stir for 3 hours to obtain a mixed powder;

[0074] 3) Drying: Dry the mixed powder prepared in step 2) through an airflow flash dryer at a drying temperature of 160° C. and a drying time of 4 hours to obtain a dried powder;

[0075] 4) Classification: the dry powder obtained in step 3) is classified by air selection in a cyclone separator to obtain a product.

Embodiment 4

[0077] 1. Formula

[0078] A diatomaceous earth insecticide, comprising: 320-360 mesh amorphous SiO 2 The mass percentage content is 98% of diatomite powder 85%; the mass percentage content of 320-360 mesh pyrethrin is 25% pyrethrin powder 2.5% and first-grade sepiolite powder 12.5%.

[0079] 2. Preparation method

[0080] 1) material preparation: prepare the diatomite powder, pyrethrum powder and sepiolite powder of above-mentioned formula quantity;

[0081] 2) Mixing: After mixing the diatomaceous earth powder, pyrethrum powder and sepiolite powder in the prescribed amount, use a high-efficiency mixing unit to fully stir for 2.5 hours to obtain a mixed powder;

[0082] 3) Drying: Dry the mixed powder obtained in step 2) through an airflow flash dryer at a drying temperature of 80°C and a drying time of 6 hours to obtain a dried powder;

[0083] 4) Classification: the dry powder obtained in step 3) is classified by air selection in a cyclone separator to obtain a product. ...

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Abstract

The invention provides a kieselguhr insecticide, and a preparation method and application thereof. The kieselguhr insecticide comprises the following components in percentage by mass: 80-91 percent of kieselguhr powder, 1.5-3.5 percent of pyrethrum powder and 7.5-16.5 percent of sepiolite powder. The insecticide contains simple components, is high in insecticide efficiency, safe, low in toxicity and low in residue, and is an environment-friendly natural plant insecticide. The insecticide is extremely powerful in lethality to software insects, and can be widely applied to storage of grains and seeds and prevention and treatment of plant diseases and insect pests of crop fruit, vegetable and food production; meanwhile, the insecticide preparation method is simple and is suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a diatomaceous earth pesticide and its preparation method and application. Background technique [0002] my country is a large agricultural country, and its grain production and storage ranks first in the world. The average storage time of my country's grain reserves can generally be as long as 3-4 years, and it is easy to be infected with diseases and insect pests during the storage period, so the pest damage to grain reserves is very serious. At present, the pesticides for planting and grain storage generally used in China are chemical agents, which can be divided into two categories: sprays and fumigants and grain protective agents. The national grain depot mainly uses fumigants, and the main variety is aluminum phosphide flakes. Grain protective agents include insecticide phosphorus (the active ingredient is malathion), fenitrothion, Kaianbao, phosphine (PH 3 ), methyl ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/12A01N25/08A01P7/04A01M1/00A01N59/06A01N59/00
CPCY02A50/30
Inventor 李存昌陶普华李凯文
Owner QINGDAO CHUANSHAN NEW MATERIALS
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