室内试验 1.室内触杀玉米螟幼虫药效测定: 用2.5％溴氰菊酯乳剂,用20—60号筛目的炉渣为载体,配制成不同浓度的颗粒剂,分别按每亩用有效成分药量1克、0.5克、0.25克、0.125克、0.0625克、0.03125克,并设0.1％六六六及5％DDT颗粒剂及不防治为对照,将配好不同浓度用量的药颗粒,分别放在培养皿内,分别在1天、7天、10天,将供试的1龄幼虫(田间采集卵块孵出的1龄幼虫),每一处理接放20头,分别使其在颗粒剂上面爬行30分钟,在幼虫爬行过程中, Laboratory tests 1. Indoor contact with corn borer larvae efficacy test: with 2.5% deltamethrin emulsion, with 20-60 mesh sieve as carrier, formulated into different concentrations of granules, respectively, per acre with the active ingredient dose 1g, 0.5g, 0.25g, 0.125g, 0.0625g, 0.03125g, and set 0.1% BHC and 5% DDT granules and non-control as a control, with different concentrations of drug particles were placed in The first instar larvae (the first instar larvae hatched in the field) were collected on the petri dish at day 1, day 7, and day 10, respectively. Each treatment was placed on top of the granule 30 minutes, during larval crawling,