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在根区施用杀虫双防治棉红铃虫取得田间防治效果的基础上,为了弄清杀虫双毒杀红铃虫的作用方式,我们先后对红铃虫初孵幼虫和成虫进行了室内毒力测定和田间笼罩观察试验,现将结果分析于后: 一、材料与方法: (一)供试药品及生物材料: 25％杀虫双水剂(沙市农药厂) 棉花品种鄂荆92 红铃虫卵为荆州地区微生物研究所养虫室提供。 (二)杀虫双对红铃虫初孵幼虫的内吸毒力作用试验用25×20试管插在试管架上,配制五种浓度杀虫双溶液,设清水对照,每支试管插入一根从田间摘回留有一个幼蕾的果枝,管口用脱脂棉和凡士林封好,待水培24小时后接
In order to find out the mode of action of insecticidal double poison to kill pink bollworm, we first carried out indoor poisoning to newly hatched larvae and adults of red bollworm Force determination and field observation experiments, the results are analyzed in the future: First, the materials and methods: (A) for testing drugs and biological materials: 25% insecticide Shuangshui (Shashi Pesticide Factory) cotton varieties E Jing 92 red bell Eggs for the Jingzhou area Institute of Microbiology to provide support. (B) insecticidal double pairs of pink bollworm newly hatched larvae within the role of the drug test with 25 × 20 test tube inserted in the test tube rack, the preparation of five concentrations of insecticidal double solution, set water control, each tube into a Pick up the field to leave a fruiting branch of young buds, mouth with cotton wool and vaseline seal, to be hydroponic 24 hours after the connection