How to choose pesticides for pollution-free vegetables

In the production process of pollution-free vegetables, it is still necessary to control a variety of pests and diseases, and some chemical pesticides are needed. The use of these pesticides directly affects the amount of pesticide residues in vegetables, which further affects the quality of vegetables. Therefore, it is necessary to carry out “worms to seize vegetables”. It is necessary to effectively control pests and diseases, and to ensure the safety of food, so the use of pesticides is especially important.

First, the production of non-polluting, safe, high-quality, nutritious vegetables should try to use agricultural measures and physical measures to prevent pests and diseases.
(1) Ecological control. Such as high temperature sterilization - warm soup soaking seeds can control many diseases of vegetables, high temperature shacks to prevent cucumber downy mildew.
(2) Natural enemy insects. Use the larvae to control the whitefly, use the red-eye bee to control the cabbage caterpillar, corn borer, cotton bollworm, and use the frog to control butterflies and moth pests.
(3) Yellow board lure. According to the characteristics of aphids and whitefly, which have strong color-developing properties in yellow, the method of using yellow plate oil to coat oil in greenhouses is effective in controlling aphids and whitefly.
(4) High technology. Using the detoxification technology of garlic, strawberry and potato, it can effectively reduce the occurrence of viral diseases and increase the yield; use the grafting technology of melons, such as grafting of watermelon, eggplant, cucumber and tomato, effectively control the occurrence of soil pests and diseases, and improve vegetables. Yield and quality.
(5) Plant pest control. The leaching solution of garlic, onion, loofah leaf and tomato leaf is used to make pesticides, and the aphids and red spiders are controlled, and the aphids, cabbage caterpillars and rapeseed meal are controlled by the extracts of matrine, skunk and green onion leaves.
(6) Artificial killing. Using the pseudo-death and phototaxis of pests, they are killed by black light. The fascinating ladybugs harm the eggplant and can be used to trap the eggplant around the eggplant. The underground pests are gathered under the leaves of the phoenix tree, and the leaves of the phoenix tree can be piled up to trap.

Second, the effect should be selected, and there are no biological pesticides or biochemical agents with little toxicity or toxicity to humans, animals and natural enemies. Such as BT, cabbage worm granule virus preparation, beneficial microbial growth-producing bacteria and the like. BT bio-insecticide, 150~200 ml per acre, sprayed once every 7 days, can effectively kill 1~2 instar larvae of cabbage caterpillar, diamondback moth and bean pod. Spray with antibiotics 120 and 500 ml of wuyimycin per acre. Using liuyangmycin and avermectin 2500~3000 times solution to control red spiders, aphids and larvae. Use agricultural streptomycin 4000~5000 times liquid to control bacterial diseases of vegetables.

Third, select specific insect growth regulation, such as chlorbenzuron, Nongmengite, Youle, and Taibao, etc. The insecticidal mechanism of such chemical pesticides is to inhibit the growth and development of insects, so that they can not be peeled and ageed, and their insecticidal activity is very high. High, very low toxicity to humans and animals. Fourth, it is to choose high-efficiency, low-toxic, low-residue pesticides. The normal use of such pesticides will not cause poisoning accidents and is safer.

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