瓢甲敌对日本双棘长蠹的室内毒力测定

在室内就4．5％瓢甲敌乳油施用于葡萄日本双棘长蠹的效果进行了毒力测定，测试该药剂对日本双棘长蠹越冬成虫的驱避杀伤情况。结果表明：施药后前2d，日本双棘长蠹成虫对施药枝段产生了强烈的忌避反应，忌避率为100％；施药后3—5d，忌避作用有所减弱，但仍达82．00％以上；施药后7—10d，忌避率为56．41％-74．36％。同一质量浓度下3种施药方法对日本双棘长蠢成虫的触杀效果依次为喷施法〉涂刷法〉爬行法；3种施药方法均表明，质量浓度为1．25g/L和1．00g/L时药效较好，两者间差异不显著，并显著高于0．83g/L和0．67g／L。

Toxicity Determination on 4.5%Beta-cypermethrin EC of Sinoxylon japonicum in Laboratory

Toxicity determination on the effect of 4.5% Beta-cypermethrin EC to Sinoxylon japonicum was conducted in laboratory, repellent and cytotoxicity effect of 4.5% Beta-cypermethrin EC on Sinoxylon japonicum overwintering adults were determined, the results showed:after applying 4.5% Beta-cypermethrin EC for two days, Sinoxylon japonicum adult, repellent rate was 100%;after applying 4.5% Beta-cypermethrin EC for there to five days, repellent rate decreased, but still reached more than 82.00%;after applying 4.5%...