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Plant-derived mosquito larvicide containing Corydalis curviflora

A technology of plant source and mosquito larvae agent, which is applied in the preparation and processing of pesticides, and in the field of pesticides, can solve the problems that there are no research reports on the chemical components of Corydalis chinensis, and achieve the effects of being suitable for popularization and use, low cost, and reducing toxicity

Inactive Publication Date: 2018-01-19
HARMLESS PESTICIDE RES & SERVICE CENT XIBEI AGRI FORESTRY SCIEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no research report on the chemical constituents of Corydalis chinensis

Method used

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  • Plant-derived mosquito larvicide containing Corydalis curviflora
  • Plant-derived mosquito larvicide containing Corydalis curviflora
  • Plant-derived mosquito larvicide containing Corydalis curviflora

Examples

Experimental program
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Effect test

preparation example Construction

[0043] The preparation method of Corydalis chinensis extract:

[0044] A, the dried stems and leaves of Corydalis chinensis are pulverized, and pass through a 40-mesh sieve;

[0045] B. Use industrial ethanol with 3 to 4 times the mass of the pulverized Cordyceps sinensis as a solvent, and perform ultrasonic extraction at 50 to 60 ° C for 1 h;

[0046] C. With the method of vacuum concentration, the extract of Corydalis chinensis leaf is concentrated to the same weight as the raw material pulverized material of Corydalis chinensis, to obtain Corydalis chinensis extract.

[0047] Determination of indoor activity of ethanol extract of Corydalis chinensis on third instar larvae of Culex pipiens pipiens:

[0048] 1.1 Materials and methods

[0049] 1.1.1 Test worms

[0050] Culexpipienspallens, Culexpipienspallens, was cultivated at the Pollution-free Pesticide Research Service Center of Northwest Agriculture and Forestry University.

[0051] 1.1.2 Test drugs

[0052] The etha...

Embodiment 1

[0062] Example 1: Preparation of Wettable Insecticide Powder Containing Corydalis chinensis extract

[0063] Weigh 40kg of the fine powder of stems and leaves of Viola Qinling, the particle size of the fine powder is 95% and pass through a 325 mesh sieve, and the fine powder is fully mixed with 48kg of white carbon black, 2kg of sodium lignosulfonate, and 10kg of dispersant NNO. Then, 100kg of 40% Qinling Pansy violet wettable insecticide powder can be obtained.

Embodiment 2

[0064] Example 2: Preparation of Mosquito larvicide soluble liquid containing Corydalis chinensis extract

[0065] Take by weighing 25kg of Corydalis chinensis extract, 15kg of nonylphenol polyoxyethylene ether phosphate and 60kg of ethanol into the preparation kettle, and fully stir until transparent to obtain 100kg of 25% Corydalis chinensis soluble liquid.

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Abstract

The invention discloses a plant-derived mosquito larvicide containing Corydalis curviflora. The obtained plant-derived mosquito larvicide containing a Corydalis curviflora extract is prepared by taking the Corydalis curviflora extract as a main component and adding an aid; and the preparation can be in the form of a soluble liquid, wettable powder, water-dispersible granules, granules, a microemulsion or an aqueous emulsion. The plant-derived mosquito larvicide containing the Corydalis curviflora extract has a remarkable larvicide effect, and the active compound thereof is a naturally existingsubstance and has formed inherent metabolic pathways for energy and material circulation in the long-term evolution process, so that after being applied, the plant-derived mosquito larvicide has no residue, can not cause biological concentration, and is relatively safe to non-target organisms; and mosquito larvae are less prone to producing larvicide resistance. The plant-derived mosquito larvicide is applicable to indoor / outdoor mosquito breeding places and sensitive areas such as areas for drinking water treatment and the like.

Description

technical field [0001] The invention belongs to the technical field of pesticides, in particular to the field of pesticide preparation and processing, and in particular to a plant-derived mosquito larvicide containing Corydalis chinensis. Background technique [0002] Corydalis shensiana Liden, also known as Corydalis shensiana Liden, is a plant of the family Papaveraceae, also known as Corydalis shensiana, also known as Corydalis shensiana Liden. Corydalis chinensis is a perennial herb unique to my country, distributed in Henan, Shaanxi and Shanxi. It often grows under forests, bushes and mountain tops at an altitude of 1300-3300m. (Liden ex C.Y.Wu, H, Chuang&Z.Y.Su in C.Y.Wu, Fl.Reipubl.popularis Sin.32:219.1999; Flora of China7:387.2008—Corydalis curvifloraMaximowiczvar.giraldiiFedde in FeddeRepert.12:407.1913; Flora of Qinling 1(2 ): 369.1974.). [0003] Nowadays, the research results of the chemical constituents of Corydalis have widely shown that the main alkaloids i...

Claims

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Application Information

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IPC IPC(8): A01N65/08A01P7/04
CPCY02A50/30
Inventor 何军周玉马志卿田向荣董艳玲冯俊涛张兴
Owner HARMLESS PESTICIDE RES & SERVICE CENT XIBEI AGRI FORESTRY SCIEN
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