Control techniques of vegetable diseases and insect pests

1. Protect sweet potato fruits and vegetables.

Taking aphids, Liriomyza huidobrensis, whitefly (Bemisia Tabaci and Bemisia Tabaci) pests, downy mildew, gray mildew, blight and virus as control objects, focusing on the control of room temperature and humidity in the greenhouse, trapping and blocking as the core, focusing on scientific drug use and biological control as a breakthrough, set up trapping boards and insect control nets to promote the use of biological pesticides, botanical pesticides and insect natural enemies. At the same time, it is supplemented by fitness cultivation and smoke machine application technology.

2. Cruciferous vegetables in open field.

Taking Plutella xylostella, Pieris rapae, beet leaf moth, aphids, downy mildew, white spot, black rot and soft rot as the main control objects, based on agricultural measures, priority is given to the use of physical methods such as frequency vibrating insecticidal lights, color plate traps, sexual traps and the use of biological pesticides. Biological pesticides and botanical pesticides are given priority in the initial stage of the occurrence of diseases and insect pests. Low toxicity, low residue and high efficiency pesticides are selected when using chemical pesticides. Attention should be paid to the selection of pesticides and the improvement of application methods, so as to improve the effect of control and reduce the use of pesticides. Scientific and rational rotation of drugs.

3. Small arched shed and open field leek.

The main control targets are root maggot underground pests and Botrytis cinerea. Based on the application of mature fertilizers, the prevention and control technology is based on the trapping of adults in sugar and vinegar solution, and focuses on the root irrigation of low toxic chemical pesticides and botanical pesticides.