A method of controlling tobacco pests by using predatory mites

A technology of preying on mites and pests, applied in the field of pest biological control, can solve the problems of reducing the yield and quality of tobacco leaves, withering, residues, etc., and achieve the effect of improving the control effect and increasing the number of eggs laid

Active Publication Date: 2018-09-14
YUXI TABACOO COMPANY OF YUNNAN PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adults and nymphs of Bemisia tabaci can damage tobacco leaves. Adults and nymphs gather on the leaves and shoots to suck juice, and the damaged leaves fade, turn yellow, wilt, or even die, reducing the yield and quality of tobacco leaves
On the other hand, Thrips tabaci and Bemisia tabaci are small and hard to be found by human eyes, so the harm in tobacco leaf production is often ignored. Recently, the damage degree and range of tomato spotted wilt in our province have further increased. The harm of Thrips tabaci has been paid attention to by tobacco plant protection personnel. The control method is mainly chemical control, but because there are many host plants, and adults, nymphs and pseudo pupae can survive the winter in litter, bark cracks and soil cracks , survival, therefore, the expected control effect cannot be achieved, and chemical pesticide control is likely to cause environmental pollution and pesticide residues

Method used

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  • A method of controlling tobacco pests by using predatory mites
  • A method of controlling tobacco pests by using predatory mites
  • A method of controlling tobacco pests by using predatory mites

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1. Test method: (test repeated three times)

[0021] (1) Place a circular sponge with a diameter of 5.5 cm in a petri dish with a diameter of 7 cm. The edge of the sponge is not in contact with the petri dish, and then place a circular fresh sweet potato leaf on the sponge with a diameter of 5 cm. Add an appropriate amount of water, the height of the water surface is 1 / 2 of the height of the petri dish;

[0022] (2) Place the female adult mite of Amblyseius stepii, the eggs of Bemisia tabaci and the 1st instar nymph of Bemisia tabaci carrying eggs on the sweet potato blade, and the female adults of A. The ratio of eggs to 1st instar nymphs of Bemisia tabaci was 1:8:3;

[0023] (3) Then place the culture dish at 27° C., in an artificial climate box with a relative humidity of 85%, and the light-to-dark ratio L:D=14h:10h;

[0024] (4) Check the development of Amblyseius stepheni every morning, supplement Bemisia tabaci ova and 1st instar nymphs according to the number o...

Embodiment 2

[0034] 1. Test method: (test repeated three times)

[0035] (1) Place a circular sponge with a diameter of 5.5 cm in a petri dish with a diameter of 7 cm. The edge of the sponge is not in contact with the petri dish, and then place a circular fresh sweet potato leaf on the sponge with a diameter of 5 cm. Add an appropriate amount of water, the height of the water surface is 1 / 2 of the height of the petri dish;

[0036] (2) Place the female adult mite of Amblyseius stepii, the eggs of Bemisia tabaci and the 1st instar nymph of Bemisia tabaci carrying eggs on the sweet potato blade, and the female adults of A. The ratio of eggs to 1st instar nymphs of Bemisia tabaci was 1:8:3;

[0037] (3) Then place the culture dish at 27° C., in an artificial climate box with a relative humidity of 85%, and the light-to-dark ratio L:D=14h:10h;

[0038] (4) Check the development of Amblyseius stepheni every morning, supplement Bemisia tabaci ova and 1st instar nymphs according to the number o...

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PUM

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Abstract

The invention discloses a method for preventing and treating pest of tobacco by utilizing predatory mites. By selecting Amblyseius swirskii ((i) Amblyseius swirskii ( / i)) to prevent and treat tobacco thrips and controlling the reproduction conditions of the Amblyseius swirskii, the oviposition amount of the Amblyseius swirskii is improved and the preventing and treating effects of the Amblyseius swirskii to the tobacco thrips are enhanced significantly.

Description

technical field [0001] The invention relates to the technical field of pest biological control, in particular to a method for controlling tobacco pests by using predatory mites. Background technique [0002] my country is the largest tobacco producing country in the world today, and its tobacco leaf output accounts for about 30% of the world's total output. According to the "Reassessment of the Economic and Financial Benefits of China's Tobacco Industry" released in May 2012, the central tax revenue of the tobacco industry accounts for 30% of the total central tax revenue. Tobacco has become an important economic crop in our country. There are many kinds of tobacco pests and diseases, which are very harmful to tobacco production. According to the national survey of tobacco infectious diseases and the national survey of tobacco insects, there are 68 kinds of tobacco infectious diseases in my country, and more than 200 kinds of pests. The yield loss caused by diseases alone is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G13/00A01M99/00
CPCA01G13/00A01M99/00
Inventor 张立猛杨海林计思贵余清谷星慧赵进龙
Owner YUXI TABACOO COMPANY OF YUNNAN PROVINCE
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