Common pesticides and pesticides in pollution-free vegetables

Biological pesticide: BT, the Chinese name is Bacillus thuringiensis, is a bacterial insecticide. This variety has been fully used in the main vegetable areas of our country and achieved good economic benefits. But at present, there are many BT manufacturers with different quality, so we must choose the variety with good quality when using it. Note: the effect of BT is better when the temperature is slightly higher, but it is worse in winter, and it will affect the efficacy under strong light, so it is appropriate to use it after 4: 00 p. M. BT is toxic to silkworm and is prohibited in sericulture area. Should not be used in conjunction with fungicides. Pest plague No. 1, also known as Spodoptera litura NPV insecticide, is a viral insecticide. This variety was only registered in 1998, and the registered manufacturer is to control Spodoptera litura in Guangzhou, and it can also control pests such as beet armyworm and cabbage worm, but it has a very poor effect on Plutella xylostella, so it has been widely used in some small markets. The effect of the drug is slow, and it can be mixed with an appropriate amount of rapid insecticides, but not with fungicides. V-BT, which is made up of granulosis virus and BT, is popularized in our country at present, and its manufacturer is Nanqi growth Engineering Company of Hainan Province. Mainly used to control Plutella xylostella, Pieris rapae and so on. Biochemical pesticides: actinomycin (actinomycin) is a kind of antibiotic produced by actinomycetes. At present, there are many names in circulation in China, including imported pest control, domestic Haizheng pest control, Saifu, Aifuding, Zongmike and so on. It is mainly used to control Plutella xylostella, Liriomyza huidobrensis and mites, and has achieved obvious economic and social benefits. Specific performance insecticides: including Yitaibao, Carbac, Miman and so on. It is mainly used to control night moth pests. Insecticide with high efficiency, low toxicity and low residue: 5% high efficiency is 5% imidacloprid, which belongs to nitromethylene, high efficiency, low toxicity and low residue. It is mainly used to control prickly sucking pests such as aphids, thrips, whitefly and so on. The drug lasts for a long time, it can control pests for about 10 days at a time, and aphids can be controlled for as long as 20 days. at present, similar products in circulation include Kangfuduo, Yuanjing, aphid lice and so on. Acetamiprid, also known as imidacloprid or mopyrone, is a new type of insecticide with high efficiency, low toxicity and low residue. It is mainly used to control pests such as Plutella xylostella and mites. There are other common varieties such as trichlorfon, phoxim and so on.