Integrated Control Techniques for Pests and Diseases in Protected Vegetables

There are more and more kinds of pests and diseases of vegetables in protected areas, and the area of ​​occurrence is increasing. The loss of damage is becoming more and more serious, and the difficulty of prevention and control has become an important obstacle to the production of vegetables in protected areas. In prevention and control work, we must do a good job of prevention and comprehensively use agricultural, ecological, physical, and chemical control methods to effectively control the pests and diseases of vegetables in protected areas.

1, soil disinfection. Doing a good job of disinfecting the soil in protected areas can kill pathogens, pests, and other harmful organisms in the soil, and can effectively control pests and diseases. The main methods are sunlight high temperature disinfection, steam disinfection and methyl bromide fumigation.

2, to promote grafting disease prevention technology. For difficult to control melon wilt disease, eggplant Verticillium wilt disease control methods should be used to control the disease. For example, using pumpkin as the rootstock for grafting cucumbers and tomato as the rootstock for grafting the aubergines are very successful.

3, the correct use of temperature and humidity control technology. Using the special environment of protected areas, measures such as releasing air and closing sheds to control temperature and humidity, as well as adequate lighting, scientific ventilation, and other measures, can control a variety of diseases without the need to fight drugs. Such as high-temperature sterilization and antibacterial, cucumber shed temperature management, control of downy mildew and so on.

4, timely physical control. Physical control includes measures such as soaking seeds in warm soup, disinfecting soil with high temperature, etc. In addition, pests may have special traits to trap and kill pests such as whitefly, whitefly and maggot.

5, the rational use of chemical control technology. At present, the production of pollution-free vegetables and green foods has already been mentioned on the agenda and started to be put into action. It is particularly important to use pesticides safely and reasonably in the prevention and control of pests and diseases in protected vegetables. The use of chemical pesticides in protected areas should pay attention to the following points: (1) It is strictly forbidden to use highly toxic and highly toxic high residue pesticides on vegetables, such as methamidophos, 1605, etc.; (2) rational use of drugs and the right medicine; (3) pay attention to the application of pesticide technology and correct use of pesticides Dosage, pay attention to alternation of medication, promotion of the use of smoke agents, powder tip and other efficient formulations; (4) implementation of a good safety interval; (5) vigorously promote the application of biological pesticides, such as Qiansheng BT, vegetable Dan.

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