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施用药剂杀灭小(?)吸浆虫成虫,是防治吸浆虫重要方法之一。以几种有机氯杀虫剂进行室内、田间杀虫作用和药效等研究,证明γ 666、艾氏剂、狄氏剂和DDT 均具有强大的触杀作用,其中以γ 666毒效最怏,DDT 最慢。γ 666及艾氏剂还具有相当强的熏蒸杀虫作用。田间试验结果也说明γ 666粉剂浓度虽低至0.1%,仍能杀虫95%以上。0.25% γ 666粉剂效果与0.5%的相若,试验也证明,不同浓度的γ 666粉剂兑土稀释为0.25%药粉,稀释土的种类,对杀虫效果均无影响,并在全国不少地区推广应用均证明效果显著,解决了药剂供应问题,扩大了防治面积。田间残效试验证明,不同浓度的666粉剂,在羽化盛期前2天施用,均能毒杀羽化盛期的成虫;但如在前5天施用,除1%粉剂效果较好外,0.25%及0.5%粉剂浓度的防治效果均不理想。
Application of agents to kill small (?) Midazola adult, is one of the important ways to prevent Midge. Several organochlorine pesticides for indoor and field insecticidal effects and efficacy studies have shown that γ 666, aldrin, dieldrin and DDT have a strong contact action, which γ 666 most toxic, DDT is the slowest γ 666 and aldrin also have quite strong fumigation insecticidal effect. Field test results also show that γ 666 powder concentration as low as 0.1%, still insecticide more than 95%. The effect of 0.25% γ 666 powder is similar to that of 0.5%. The experiment also proves that different concentrations of γ 666 powder diluted with 0.25% powder and diluted soil have no effect on the insecticidal effect. In addition, Promote the application are proved effective, solve the pharmaceutical supply problem, expanding the area of prevention and treatment. In the field trials, it was proved that 666 powder of different concentrations applied to adults in eclosion stage during the first 2 days of eclosion stage. However, in the first 5 days, except 1% powder, 0.25% and The control effect of 0.5% powder concentration is not satisfactory.