论文部分内容阅读
埃及金钢钻Earias insulana(Boisd.)是云南省棉花近年来的主要蛀食性害虫。1958年以来,采用25％滴滴涕乳剂防治,对减轻为害、确保棉花增产收到一定效果。但群众反应滴滴涕防治效果不好,施用浓度及防治次数逐年增加。如保山县潞江棉区浓度由200—300倍增至150倍,个别高达80倍,防治次数在20次左右。Brown(1963—64)记载,埃及金钢钻对异狄氏剂具有抗性。1964年我们采集了云南省主要棉区的埃及金钢钻,进行对滴滴涕抗药性的比较测定。同时,比较测定了埃及金钢钻幼虫不同龄期的抗药性差别,现
Egyptian golden diamond Earias insulana (Boisd.) Is the major edible pest of Yunnan cotton in recent years. Since 1958, the use of 25% DDT emulsion control, to reduce harm, to ensure that cotton yield has received some results. However, the mass response to DDT prevention and treatment is not good, the application concentration and the number of prevention and control increased year by year. Such as the Baoshan County Lujiang cotton concentration increased from 200-300 times to 150 times, up to 80 times individual, the number of prevention and control in about 20 times. Brown (1963-64) records that Egyptian diamonds are endrin-resistant. In 1964, we collected Egyptian diamond steel drills from the main cotton areas of Yunnan Province for the comparative determination of resistance to DDT. In the meantime, the differences in the drug resistance of Egyptian diamond-larvae at different instars were compared