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本文根据美国昆虫学会和联合国粮农组织推荐的烟夜蛾属(Heliothis spp.)害虫抗性的标准测定方法,对江苏等地区棉铃虫抗性水平调查的结果表明:江苏棉铃虫种群对常用杀虫药剂抗性水平是山东虫种的5倍以上,特别是江苏东台种群对滴滴涕的抗性水平,从1975年至1981年提高了12倍以上。因此,江苏种群抗性较强,山东种群较敏感。 以甲胺磷、乐胺磷对上述抗性种群和敏感种群分别进行测定表明,棉铃虫两种群的相对毒力或共毒系数基本相近,初步证实抗性种群对甲胺磷、乐胺磷不表现明显抗性;用多功能氧化酶的抑制剂加西维因对抗性种群测定,增效比值达8—27倍由此认为多功能氧化酶可能是导致棉铃虫产生抗药性的主要因子。
According to the standard test method of insect resistance of Heliothis spp. Recommended by the American Entomological Society and the Food and Agriculture Organization of the United Nations, the investigation on the resistance level of cotton bollworm in Jiangsu and other regions showed that: The level of resistance to pesticides was more than 5 times higher than that of Shandong pests. In particular, the resistance level of DDT to Jiangsu Dongtai population increased by 12 times from 1975 to 1981. Therefore, the Jiangsu population is more resistant and the Shandong population is more sensitive. To methamidophos, leptin determination of the above-mentioned resistant and susceptible populations, respectively, showed that the relative virulence or co-toxicity coefficient of the two populations of cotton bollworm were basically similar, initially confirmed that resistant populations of methamidophos, The results showed that the multifunctional oxidase could be the main factor leading to the development of resistance in H. armigera.