溆浦县利用飞机防治松毛虫、松毒蛾,仅飞行48小时,176架次,防治面积达8.7410万亩,死亡率96.4%。马尾松毛虫、松毒蛾是松林的大害虫每年发生2—3代。特别是马尾松毛虫,一个雌蛾平均产卵500—800粒,繁殖块,取食量大,一条幼虫从孵出到结茧,需食松针800—1000根左右。溆浦县海拔1200 Xupu County, the use of aircraft control pine caterpillars, pine gnats, flying only 48 hours, 176 sorties, control area of ​​8.7410 million mu, the mortality rate of 96.4%. Dendrolimus punctatus, pine gnats is pine forest pests occur 2-3 generations a year. Especially Masson Dendrolimus, a female moth average spawning 500-800 tablets, breeding block, feeding large, a larvae from hatching to cocoon, pine needles need to eat about 800-1000. Xupu County 1200 above sea level