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最早用于土壤消毒的杀虫药剂,大多为砷酸药剂或二硫化碳、二氯乙烯等熏蒸剂,由于用量大,手續麻煩,且对人畜有剧毒,所以在应用推广上受限制。自应用氯化有机合成杀虫药剂处理土壤和拌种后,对防治地下害虫显示了空前杀虫效力,666、DDT、1068、艾氏剂等很快就被广泛利用。特别是666制剂,由于具有:杀虫率高,用量少,价格低、对人畜毒性較小等优点,使用更为普遍。一般害虫中,有不少种类在变态过程中,有一定时期棲息在土壤里,因此,可采用药剂处理土壤或药剂拌种,以消灭这些土
The earliest insecticide used for soil disinfection, mostly arsenic agents or carbon disulfide, dichloroethene and other fumigants, due to the large amount of formalities, troublesome, and highly toxic to humans and animals, so the application of restrictions. Since the application of chlorinated synthetic organic insecticide to treat soils and seed dressing, it has shown unprecedented insecticidal efficacy against subterraneous pests 666, DDT, 1068, aldrin and the like have been rapidly exploited. In particular, the 666 preparation is more commonly used due to its advantages of high insecticidal rate, less dosage, lower price and less toxicity to humans and animals. In general pests, there are many species in the metamorphosis process, there is a period of time habitat in the soil, therefore, the agent can be used to treat soil or seed dressing to eliminate these soil