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一、影响媒介防制计划的一些问题 (一)媒介昆虫对杀虫剂的抗性在医学昆虫中,已有108种对杀虫剂产生抗性,而且这种现象有继续增加的趋势。不仅抗性种群在地理上广泛散布,而且在同一地区的一些种类几乎对一切有效的化合物有了抗性,许多其他种类仅对少数化合物敏感。大多数种类对有机氯杀虫剂的抗性(91种抗狄氏剂,61种抗二二三)说明了抗性问题的严重性。曾指望采用有机磷和氨基甲酸酯类化合物来克服抗性问题,但27种媒介对这
First, the impact of some of the media control programs (A) of the insect resistance of insecticides In medical insects, there are 108 kinds of insecticides resistant, and this phenomenon has continued to increase. Not only are the resistant populations widely distributed geographically, but some species in the same area are resistant to almost any effective compound, and many others are only sensitive to a few compounds. The majority of resistance to organochlorine pesticides (91 dieldrin and 61 anti-233) illustrates the severity of the resistance problem. Organophosphorus and carbamate compounds have been expected to overcome the problem of resistance, but 27 mediators of this