Plant extract slow-release insect-resist agent and preparation method thereof

A kind of plant insect repellent, the technology of insect repellent, is applied in the directions such as botanical equipment and method, plant growth regulator, insecticide, etc., can solve the problem such as not giving AstinI other uses etc.

Active Publication Date: 2021-11-23
王文明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The prior art does n...

Method used

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  • Plant extract slow-release insect-resist agent and preparation method thereof
  • Plant extract slow-release insect-resist agent and preparation method thereof
  • Plant extract slow-release insect-resist agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1 contains the preparation of the slow-release insect repellant of Astin I

[0035]

[0036] Preparation:

[0037] Step 1, take the prescription amount of polylactic acid-glycolic acid copolymer (75:25), sodium lauryl sulfate, povidone K30 and dissolve in an appropriate amount of N-methylpyrrolidone;

[0038] Step 2, take the prescription amount Astin I and dissolve it in the solution obtained in step 1;

[0039] Step 3, take the solution obtained in step 2, and spray-dry it to obtain a drug powder containing Astin I, which is a slow-release insect repellent.

Embodiment 2

[0040] Example 2 The insect-resistant effect of the slow-release insecticide containing Astin I applied in paddy fields to Chilo borer. The comparative examples and examples of this patent are all field efficacy tests in red soil paddy fields, and the area of ​​each interval is 100m 2 , randomly arranged in blocks, each section was isolated with plastic film when spraying, and safe use measures such as agronomic regulation were adopted for each section.

[0041] (1) Comparative Example 1: Commercially available 20% dinotefuran water-dispersible granules (Hebei Bipolar Chemical Co., Ltd.) were used as rice insect repellant (sprayed evenly in an amount of 50 L / mu (equivalent to 50 g / mu)).

[0042] (2) Survey method:

[0043] Before spraying, 7d, 14d, 30d survey after spraying.

[0044] Using the 5-point sampling method, 5 points were randomly selected in each interval, and 5 clusters of rice plants were surveyed at each point, a total of 25 clusters. Specific investigation met...

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Abstract

The invention relates to a plant extract slow-release insect-resist agent and a preparation method thereof. According to the application, it is found for the first time that AstinI in the aster root extract has an insect prevention effect, and the AstinI can be used for preventing insects of gramineous plants, especially rice. In order to enhance the insect-resistant effect, the slow-release insect-resistant agent is prepared by dispersing the slow-release insect-resistant agent in a degradable polymer polylactic acid-glycolic acid copolymer (75: 25). The slow-release insect-resistant agent is suspended in tap water and sprayed on the surfaces of plants, slow-release insect-resistant agent powder particles containing AstinI are adhered to the surfaces of the plants, the insect-resistant agent is slowly released, and the long-term insect-resistant effect is achieved. The effect covers the whole growth period of the plants.

Description

technical field [0001] The application belongs to the field of insect repellents, and in particular relates to a plant extract slow-release insect repellent for rice and its preparation method and application. Background technique [0002] Rice is the most widely consumed and oldest crop in the world. The world's rice production is mainly concentrated in Asia, among which my country is the country with the second largest rice planting area and the largest rice output in the world. Doing a good job in the control of rice diseases and insect pests is very important for high rice yield. The harm of plant diseases and insect pests to the growth of rice has always been an important issue that farmers pay close attention to and try to solve. [0003] Spraying pesticides is the main means of pest control for crops. People have sprayed pesticides in stages for many times for a long time. Due to the high toxicity of pesticides and the smell of pesticides, pesticides need to be blen...

Claims

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Application Information

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IPC IPC(8): A01N43/90A01P7/00A01P7/04
CPCA01N43/90Y02A50/30
Inventor 王文明
Owner 王文明
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