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A biological control method for tobacco aphids in crop rotation

A technology of Myzus persicae and tobacco field, which is applied in the field of biological control of agricultural and forestry pests, can solve the problems of neglecting the control effect of aphids, large damage of aphids, and large cultivation area of ​​crops in spring, and achieves excellent control effect, reduces pollution, and reduces the number of insect populations. Effect

Inactive Publication Date: 2015-10-21
YUXI TABACOO COMPANY OF YUNNAN PROVINCE
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Problems solved by technology

[0007] (3) The planting area of ​​small spring crops is large, and aphids are very harmful to small spring crops. At present, the experiments on the control of aphids by Aphids persicae are basically limited to tobacco fields, and the control effect of Aphis persicae on aphids of small spring crops is ignored.

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  • A biological control method for tobacco aphids in crop rotation

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the examples. The percentages in the examples are weight ratios, but the present invention is not limited thereto.

[0032] 1. Materials:

[0033] 1.1 Test site: Tobacco Field of Maqiao Scientific Research Base, Yuxi City, Yunnan Province;

[0034] 1.2 Plants tested: Rapeseed Yuhongyou No. 1, Tobacco K326.

[0035] 2. Test method: The test set treatment I, treatment II, treatment III, treatment IV, treatment V, and treatment VI. The size of all treatment tobacco fields was 10 meters wide and 15 meters long, and each treatment was set with 3 repetitions; the test used 10-point sampling method, 5 tobacco plants were taken at each point for investigation, and the corrected control effect was calculated according to the regulations in the "Guidelines for Field Efficacy Tests of Pesticides".

[0036] Processing I:

[0037] (1) 20 days before the sowing of rapeseed, the field is weeded, and the weeds...

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Abstract

The invention discloses a biological control method of crop-rotation tobacco field myzus persicae. The method has the following advantages that aphids are prevented through releasing aphidius gifuensis ashmead on oilseed rape of a preceding crop, the initial number of the aphids is obviously reduced in the growing period of tobaccos, meanwhile, the population quantity of the aphidius gifuensis ashmead is maintained in a tobacco field, the myzus persicae on the tobaccos is beneficially controlled during planting of following tobaccos, and the effect is better than a myzus persicae chemical control effect; a releasing mode that non-mummified alates where parasite aphidius gifuensis ashmead lives are combined with adult ashmead of the aphidius gifuensis ashmead is adopted, and the prevention effect is better than the effect that the non-mummified alates or the adult ashmead of the aphidius gifuensis ashmead is separately released; according to the biological control method, myzus persicae prevention does not need pesticides, use amount of chemical drugs is greatly reduced, influences of the chemical drugs on tobacco leaves are reduced and pollution to the environment is reduced.

Description

technical field [0001] The invention belongs to the technical field of biological control of agricultural and forestry pests, and in particular relates to a method for preventing and controlling the aphid in a crop rotation tobacco field by using the aphid aphid. Background technique [0002] The tobacco aphid belongs to the genus Myzus of the family Aphididae in the order Homoptera. It is a polyphagous pest that is widely spread all over the world and seriously harms crops. It is also one of the important pests of tobacco in various smoking areas in my country. Plant nutrition and excretion of honeydew directly affect the yield and quality of tobacco leaves, and also spread a variety of tobacco viruses, causing the occurrence and prevalence of various viral diseases and other insect-borne tobacco diseases. People have carried out various researches on the control of aphids, and various control measures have been applied in the control of aphids. It is difficult to survive u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G1/00A01G13/00
Inventor 张立猛杨海林谷星慧杨硕媛赵进龙
Owner YUXI TABACOO COMPANY OF YUNNAN PROVINCE
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