First, methamidophos. It is a broad-spectrum insecticide. It used to be used to kill all kinds of pests, but its high toxicity, residual period of more than 30 days, often causing poisoning incidents of humans and animals, is the primary banned pesticide in pollution-free vegetable production. Production should pay attention to:
1. Lepidopteran pests such as Pieris rapae, Plutella xylostella, and pea pods. There are two types of alternative pesticides: one is biological pesticides, such as moth sorghum, century lore, Tao Xiaoling, agricultural land, etc.; the second is the use of compound pesticides, common compounding is dichlorvos + BT, dichlorvos + kung fu. Should pay attention to the use: 1 in the low-age spraying of pests, the effect is good; 2 rotation use of various insecticides, more use of biological pesticides, in order to avoid pests to produce resistance; 3 now pesticides have more contact, you should choose pests for food The best effect of spraying is that the bean pods crawl out of the pods for food at 6:00~8:00 in the morning, and the spraying effect is best.
2. For the yellow scoop jumper, yellow squash and other migratory pests. Alternative pesticides include dichlorvos, agricultural land, and phoxim. In use, it should be noted that: 1 large area at the same time the prevention effect is good; 2 when the number of yellow scoops is large, in addition to spray prevention, root larvae should be killed by root irrigation; 3 interval 5~7 days, continuous prevention 2~3 times .
3. Aphids, whitefly, pests. It is easier to kill, and it can be controlled in time with the use of cockroaches, dichlorvos and other agents.
Second, dicofol. Previously used to kill red spiders, mites and so on. The alternative pesticides are insects, worms, worms, etc., and the effect is obvious after use.
Third, Omethoate. In the past, it was mainly used to kill cucurbits such as cucurbits.
Fourth, carbofuran. Previously it was mainly applied to the soil to kill nematodes and other soil pests. Alternative pesticides include Miller and Dixon. In addition, the same effect can be achieved by using the method of turning the soil and applying lime.
Five, methyl 1605. Previously used to kill a variety of vegetable pests, such as the tick moth, alternative pesticides and methods of use similar to methamidophos.
Vegetable production should strictly abide by pollution-free operating procedures, ban high-toxic, high-residue pesticides, and must strictly comply with the safety period for pesticides that are allowed to be used. By improving the level of pesticide application technology, it not only meets the requirements of pollution-free vegetables, but also achieves the goal of high yield and high quality.
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