Tripterygium wilfordii compound pesticides for high effectively preventing and curing tea geometrid

The technology of an insecticide and tripterygium wilfordii is applied in the field of compound insecticides of tripterygium wilfordii, which can solve the problems of low insecticidal effect and poor quick-acting insecticidal efficiency of tea tree pests, tea inchworm, etc., so as to reduce the cost of medication, increase the income of farmers, and significantly improve the social and economic effects

Inactive Publication Date: 2008-10-22
ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a botanical synergistic agent with rich resources and low price for the defects of poor quick-acting insecticidal effect and low insecticidal effect on te

Method used

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  • Tripterygium wilfordii compound pesticides for high effectively preventing and curing tea geometrid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: (the preparation method of Tripterygium wilfordii compound insecticide)

[0026] (1) Preparation of Tripterygium wilfordii crude extract: wash the roots of Tripterygium wilfordii, dry and pulverize it with 95% ethanol solvent in a ratio of 1 g: 10 ml by weight and volume, extract with Soxhlet extraction, and concentrate the extract The crude extract of Tripterygium wilfordii in solid state;

[0027] (2) Reasonable combination of Tripterygium wilfordii crude extract and tea saponin: through indoor bioassays on tea geometrids, determine the appropriate proportion of the co-toxicity coefficient of the two active ingredients above 150;

[0028] (3) Screening of dispersants or emulsifiers: use the compounding technology of pesticides to screen suitable dispersants and emulsifiers to increase the dispersant performance and field control effect of products;

[0029] (4) Screening of fillers or solvents: according to the chemical properties and usage requirements...

Embodiment 2

[0031] Embodiment 2: (product one)

[0032] According to tripterygium wilfordii crude extract 8%, tea saponin 8%, butanol 12%, Nongru 02046%, Nongru 02073%, make up to 100% with toluene to prepare an emulsifiable cream product, the specific preparation method is the same as in Example 1.

Embodiment 3

[0033] Embodiment 3: (product two)

[0034] According to 0.4% of the crude extract of Tripterygium wilfordii, 2% of tea saponin, 5% of butanol, and 15% of Nongru 02015%, it is supplemented to 100% with xylene to prepare an emulsifiable cream product. The specific preparation method is the same as in Example 1.

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Abstract

The invention discloses a tripterygiumforrestii composite mixed insecticide for high-efficiency prevention and cure to tea geometrid, which belongs to the technical field of botanical insecticides and pesticides. The insecticide consists of the following components by weight percentage: 0.4 percent to 20 percent of crude tripterygiumforrestii extracts, 1 percent to 8 percent of tea saponin, 0 percent to 12 percent of dispersants, and 0 percent to 12 percent of emulsifiers and solvent or filler for the rest percentage. After the crude tripterygiumforrestii extracts are mixed with the tea saponin, the control effects to higher and lower instar larvaes of tea geometrid within 1 to 7 days after being treated can be outstandingly improved, and can be respectively increased by 5.68 to 11.10 times and 1.00 to 6.91 times, thus reducing the cost to use the pesticides and also being beneficial to protecting the tripterygiumforrestii which is a botanical pesticide resource. Therefore, the problem that both the effective control of the main injurious insecticide that is tea geometrid, and the drinking safety of tea in the tea production can not be maintained at the same time for a long time is solved. The composite mixed insecticide of the invention can be popularized and applied to the tea planting and pesticide production enterprises.

Description

technical field [0001] The invention relates to the technical field of plant insecticides and pesticides, in particular to a tripterygium compound insecticide for efficiently preventing and controlling tea geometrids. Background technique [0002] In the production of tea, it is often threatened by pests such as tea geometrids, tea leafhoppers, tea caterpillars, tea black moths, and mites. The average annual loss due to pests is 10-20%. Years are most at risk. Tea geometrids feed on leaves with larvae, and when serious, they can eat up entire tea gardens, seriously affecting tea production and tea tree growth. Since there are few types of effective biopesticides against tea inchworms, tea farmers basically rely on reducing the amount of chemical pesticides or avoiding the use of high-residue chemical pesticides to control tea inchworms. As a result, it is still difficult to ensure that the pesticide residues in tea do not exceed the standard and the quality of tea. [0003...

Claims

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Application Information

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IPC IPC(8): A01N65/00A01N25/04A01P7/00
CPCY02A50/30
Inventor 陈建明董道青陈列忠俞晓平张珏锋
Owner ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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