贵州铜仁市茶枝木蠹蛾发生规律研究

Occurrence Rule of Zeuzera coffeae Nietner in Tongren City of Guizhou Province

近年来茶枝木蠹蛾在贵州铜仁市新建茶园普遍发生,严重影响茶园生产.通过观察研究,基本明确了茶枝木蠹蛾在贵州铜仁的生活史以及生活习性.茶枝木蠹蛾在铜仁市1年发生1代,以幼虫越冬.茶枝木蠹蛾成虫产卵具有趋嫩性,在主枝的顶端嫩茎啃吃木质部,且有转枝为害现象,为害后造成茶叶折枝枯萎.不同茶叶品种受害程度存在差异,其中福鼎大白受害最重,安吉白茶受害最轻.采用化学防治方法,即施用50%杀螟松乳油1000倍液,能有效防治茶枝木蠹蛾,防效达76.17%.本研究为今后茶叶生产中防治茶枝木蠹蛾提供了一定参考.

In recent years,red borer caterpillar(Zeuzera coffeae Nietner)has become widespread in the newly-built tea plantations of Tongren City,badly affecting the production of tea plantations.In order to provide a basis for the control of Z.coffeae in tea productions in the future,a study was made to observe the life history and life habit of this insect pest.Z.coffeae was found to occur once every year in Tongren city and overwinter as larvae.The adults of Z.coffeaelaid eggs on the tea branches with the preference of tenderness,and the larvae gnawed the xylem at the top of the main branches,which caused the break of branches and withering of leaves.There were differences in the degree of victimization of the tea varieties studied,of which Fuding white tea suffered the most and Anji white tea the slightest.Chemical control with 50% Cymbidium butter 1,000 times liquid effectively controlled Z.coffeae,with a control efficiency of up to 76.17%.