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Environment-friendly insecticide and preparation method thereof

An insecticide, an environmentally friendly technology, applied in the field of pesticide processing, can solve the problems of insufficient lethality of tea pests, achieve the effect of improving the control effect and reducing the amount of application

Inactive Publication Date: 2018-05-08
林厚海
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the disadvantage of insufficient lethality of a single pyrethrum preparation on tea pests, and provide a compound plant-derived insecticide containing pyrethrum, which is suitable for the prevention and control of pests during tea picking, and can effectively reduce the use of chemical pesticides during picking amount, reduce pesticide residues, and be more environmentally friendly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Get 0.1kg pyrethrum, 0.1kg bitter bark vine root, 0.05kg Polygonum capericum, 0.05kg tobacco leaves, 0.1kg deer vine root, wash with water, pulverize the cleaned above-mentioned raw materials with a pulverizer, sieve and mix to obtain powder, and Add 1kg of 90% ethanol to the powder, heat and reflux at 50°C for 1 hour, vacuum filter the reaction solution, collect the filtrate, let it stand still, and let the ethanol volatilize to obtain the plant active ingredient extract, and finally the plant active ingredient Add 0.02kg butyl glycidyl ether, 0.02kg ethylene glycol, 0.02kg sodium carboxymethylcellulose and 0.02kg plant ash to the extract, and stir evenly to obtain an environmentally friendly insecticide containing a compound botanical insecticide containing pyrethrum agent. Dilute it 200 times and spray it on the stalks and leaves of tea leaves to prevent and control the green leafhopper with false eyes, and the killing rate reaches more than 88% at one time.

Embodiment 2

[0041] Get 0.15kg pyrethrum, 0.15kg bitter bark vine root, 0.08kg capericum, 0.08kg tobacco leaves, 0.15kg deer vine root, wash with water, pulverize the cleaned above-mentioned raw materials with a pulverizer, sieve and mix to obtain a powdery mixture, Add 1.2kg of 92% ethanol to the powdery mixture, heat and reflux at 60°C for 2 hours, vacuum filter the reaction solution, collect the filtrate, let stand, let the ethanol volatilize, and obtain the plant active ingredient extract, and finally Mix the plant active ingredient extract with 0.04kg butyl glycidyl ether, 0.04kg ethylene glycol, 0.025kg carboxymethylcellulose sodium and 0.04kg plant ash, and stir evenly to obtain the compound plant-derived insecticide containing pyrethrum Environmentally friendly insecticide. Dilute it 300 times and spray it on the stalks and leaves of tea leaves to prevent and control the green leafhopper with false eyes, and the killing rate reaches more than 84% at one time.

Embodiment 3

[0043] Get 0.2kg pyrethrum, 0.2kg bitter bark vine root, 0.1kg hot pepper, 0.1kg tobacco leaves, 0.2kg deer vine root, wash with water, grind the cleaned above-mentioned raw materials with a pulverizer, sieve and mix to obtain a powdery mixture, Add 1.5 kg of 93% ethanol to the powdery mixture, heat and reflux at 80°C for 5 hours, vacuum filter the reaction solution, collect the filtrate, let it stand, and let the ethanol evaporate to obtain the plant active ingredient extract, and finally The plant active ingredient extract is mixed with 0.05kg butyl glycidyl ether, 0.05kg ethylene glycol, 0.03kg carboxymethyl cellulose sodium and 0.05kg plant ash, and stirred evenly to obtain a compound botanical insecticide. Dilute it 500 times and spray it on the stalks and leaves of tea leaves to prevent and control the green leafhopper with false eyes, and the killing rate reaches more than 82% at one time.

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PUM

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Abstract

The invention discloses an environment-friendly insecticide which is prepared from dried flos pyrethri, radix celastri angulati, herba polygoni, folium nicotianae tabaci, radix derris, butyl glycidylether, ethylene glycol, sodium carboxymethylcellulose and plant ash. The invention also discloses a preparation method of the environment-friendly insecticide. The preparation method comprises the following steps: cleaning and grinding the plant raw materials; extracting active ingredients through heating reflux or ultrasonic treatment; mixing the extracts of active ingredients with the butyl glycidyl ether, ethylene glycol, sodium carboxymethylcellulose and plant ash in a certain proportion to obtain the environment-friendly insecticide. Through the joint effect of a plurality of chemical substances in the active ingredients of the insecticide, drug resistance of the harmful substances is not caused easily, and the insecticide can be used for a long time and has the advantages of no toxicity, no harm, no pollution and the like.

Description

technical field [0001] The invention relates to an insecticide and a preparation method thereof, in particular to an environment-friendly insecticide suitable for tea and a preparation method thereof, belonging to the field of pesticide processing. Background technique [0002] In the process of tea planting, in order to prevent insect damage, most tea farmers use insecticides. At present, there are many varieties of insecticide products, and the output ranks first among insecticides. The most widely used class of insecticides is organophosphorus However, due to the high toxicity of organophosphorus insecticides and the relatively long residual period, if the time interval from spraying to picking is not enough, the pesticide residues in the picked tea leaves will easily exceed the standard and cause damage to the human body. [0003] However, botanical pesticides are biological pesticides that do not pollute the environment and cause no public nuisance. Botanical pesticides...

Claims

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Application Information

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IPC IPC(8): A01N65/38A01N65/30A01N65/20A01N65/14A01N65/12A01N61/00A01P7/04C05G3/02C05G3/60
CPCA01N61/00A01N65/00A01N65/12A01N65/14A01N65/20A01N65/30A01N65/385C05D1/00C05G3/60Y02A50/30
Inventor 林厚海
Owner 林厚海
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