Prevention and control method for tobacco aphids

Abstract

The invention relates to a prevention and control method for tobacco aphids. The prevention and control method comprises the following steps: firstly, agricultural prevention and control; secondly, ecological management; thirdly, biological control; fourthly, biological prevention and control; fifthly, physical prevention and control; and sixthly, chemical prevention and control. A Aphidius gifuensis Ashmaed breeding biological control method is adopted for releasing and controlling the tobacco aphids in tobacco fields, the biological agent of 200 g / l imidacloprid wettable solution is adopted and 4000 times of water is added for mist spraying on the front and back faces of tobacco leaves, and a solution formed by diluting the chemical agent of 25 g / l deltamethrin missible oil by 1500 times is adopted for performing mist spraying on the tobacco aphids, so that the average incident rate of the tobacco aphids is reduced, the yield is increased, the tobacco level is obviously improved, and a good economic benefit is achieved.

Description

technical field

[0001] The invention relates to a method for preventing and treating tobacco aphids, belonging to the technical field of plant protection. Background technique

[0002] Tobacco, Latin scientific name: Nicotianatabacum. Tobacco is an important economic crop. Tobacco is an annual herbaceous plant in the family Solanaceae, and there are about 60 species of Nicotiana. Also known as peach aphid, commonly known as greasy insect, it is the most important pest that occurs in tobacco fields, and it is seriously harmful. The damage of aphids in the field is divided into two forms: direct damage and indirect damage. The direct damage is to use its piercing (needle-like) mouthparts to suck the juice of young tobacco leaves, and at the same time secrete a sweet and sticky honeydew to pollute the tobacco leaves. Tobacco leaf sooty disease is induced, the surface of tobacco leaves is blackened, and the quality of tobacco leaves is reduced; the indirect damage is the spre...