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Application of n,n'-methylenebis(2-amino-5-mercapto-1,3,4-thiadiazole) to control crop pests

A technology of methylene bis and thiadiazole, which is applied in application, insecticide, animal repellent, etc., can solve the problems of no application in production and achieve the effect of effective control of pests

Active Publication Date: 2020-05-19
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still little research in plant pest control, and there is no application in production.

Method used

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  • Application of n,n'-methylenebis(2-amino-5-mercapto-1,3,4-thiadiazole) to control crop pests
  • Application of n,n'-methylenebis(2-amino-5-mercapto-1,3,4-thiadiazole) to control crop pests
  • Application of n,n'-methylenebis(2-amino-5-mercapto-1,3,4-thiadiazole) to control crop pests

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: Absorption of N,N'-methylenebis(2-amino-5-mercapto-1,3,4-thiadiazole) by rice roots reduces the survival rate of white-backed planthopper nymphs

[0026] In this example, the concentration of N,N'-methylenebis(2-amino-5-mercapto-1,3,4-thiadiazole) used is 50mg / L. The rice used is nutrient hydroponic rice, planted on a single plant; the treatment method is to add N,N'-methylenebis(2-amino-5-mercapto-1,3,4-thiadiazole) to the nutrient solution of rice , to a final concentration of 50 mg / L, and the nutrient solution without N,N'-methylenebis(2-amino-5-mercapto-1,3,4-thiadiazole) was used as a control. After N,N'-methylenebis(2-amino-5-mercapto-1,3,4-thiadiazole) was treated for 24 hours, a special glass cover (diameter 4cm, 8cm high, 48 small holes with a diameter of 0.8mm evenly promulgated on the cylinder wall), 15 newly hatched white-backed planthopper nymphs were connected, and the top of the glass cover was sealed with a circular sponge. The experiment wa...

Embodiment 2

[0027] Example 2: N,N'-methylenebis(2-amino-5-mercapto-1,3,4-thiadiazole) stem and leaf spray treatment improves the resistance of rice to white-backed planthopper nymphs

[0028] In this example, the concentration of N,N'-methylenebis(2-amino-5-mercapto-1,3,4-thiadiazole) used is 50 mg / L and 100 mg / L. The rice used is hydroponic rice, planted in a single plant; the treatment method is to prepare N,N'-methylenebis(2-amino-5-mercapto-1,3,4-thiadiazole) with water to a corresponding concentration ( 50mg / L or 100mg / L), use a small sprayer to spray the rice stems and leaves; use tap water as a contrast. After the fog droplets on the rice stalks and leaves are completely dry, put a special glass cover (4cm in diameter, 8cm in height, 48 small holes with a diameter of 0.8mm evenly distributed on the wall of the tube) on the rice stalks, and insert the newly hatched white-backed planthopper. There were 15 nymphs, and the top of the glass cover was sealed with a round sponge. The ex...

Embodiment 3

[0029] Example 3: N,N'-methylenebis(2-amino-5-mercapto-1,3,4-thiadiazole) itself has no effect on the survival of white-backed planthopper nymphs

[0030] In order to exclude the possible influence of N,N'-methylenebis(2-amino-5-mercapto-1,3,4-thiadiazole) itself on the survival rate of white-backed planthopper nymphs, N, N'-methylenebis(2-amino-5-mercapto-1,3,4-thiadiazole) itself has stomach poisoning and contact killing effects on white-backed planthopper nymphs. In the experiment of measuring N,N'-methylenebis(2-amino-5-mercapto-1,3,4-thiadiazole) on the stomach toxicity of white-backed planthopper, each glass double-way tube (diameter 4cm , height 8cm) into 15 newly hatched white-backed planthopper nymphs, the two ends of the double-pass pipe were wrapped with parafilm artificial feed, and the concentration of 50mg / L N,N'-methylenebis(2-amino-5 -Mercapto-1,3,4-thiadiazole) added to artificial feed; artificial diet served as a control. The double-way tube was moved into...

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PUM

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Abstract

The invention discloses application of N,N'-methylene-bis(2-amino-5-thio-1,3,4-thiadiazole) in controlling crop insects; particularly, 2-50 g of the N,N'-methylene-bis(2-amino-5-thio-1,3,4-thiadiazole) is applied per mu to activate induced insect resistance in plants; the N,N'-methylene-bis(2-amino-5-thio-1,3,4-thiadiazole) is applied to crops, activating the crops to generate direct resistance to insects of Lepidoptera and Hemiptera, and improving the indirect resistance of the crops to Hemiptera insects.

Description

technical field [0001] The present invention relates to the field of plant-induced insect resistance, in particular to a method for stimulating crop-induced insect resistance through N,N'-methylenebis(2-amino-5-mercapto-1,3,4-thiadiazole) method. Background technique [0002] With the increase of the global population and the reduction of arable land, people's requirements for grain yield are getting higher and higher. The grain loss caused by insect pests accounts for about 10-30% of the total output, and there is no harvest in severe disaster years. Therefore, how to reduce insect pests to increase the total grain output is an urgent problem that people face. For example, on rice, the damage caused by Chilo suppressalis, brown planthopper Nilaparvata lugens, and white-backed planthopper Sogatella furcifera is huge. Chilo borer is one of the main pests of rice. Its larvae penetrate into the leaf sheath to cause damage, and then transfer to the stem, causing symptoms such ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N43/824A01P7/04
CPCA01N43/82
Inventor 娄永根莫晓畅
Owner ZHEJIANG UNIV
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