灰飞虱的饲养及其对4种药剂的敏感性测定

Rearing and Susceptibility to Four Insecticides of the Small Brown Planthopper

灰飞虱是一种重要的传毒昆虫。室内研究表明,夏季和冬季饲养灰飞虱的最佳寄主分别是稗草和小麦。采用稻茎浸渍法和点滴法进行的生测结果表明,吡虫啉、噻嗪酮、啶虫脒及氟虫腈4种药剂中,氟虫腈的毒力最高。氟虫腈是正温度效应杀虫剂。此外,对田间灰飞虱的药剂防治策略进行了讨论。

The small brown planthopper, Laodelphax striatellus Fallen, is an important insect vector of viruses. Labora-tory research indicated that the best host species for rearing this insect in summer and winter are barnyardgrass andwheat, respectively. Fipronil had the highest toxicity among imidacloprid, buprofezin, acetamiprid, and fipronil using therice stem-dip method and a topical application method. Fipronil efficacy increased as temperature increased. Strategiesfor insecticidal control of the small brown planthopper in the field are also discussed.