树桃─点叶蝉的研究

STUDIES ON ERYTHRONEURA SUDRA(DISTANT)OF NANE TREES

树桃—点叶蝉Ｅｒｙｔｈｒｏｎｅｕｒａｓｕｄｒａ（Ｄｉｓｔａｎｔ）在福建古田一年发生六代，７—９月温度较高，发育较快，时虫口密度大，产卵量多，是主要的危害世代。本文对桃一点叶蝉的生活史与习性、繁殖特征（性比、产卵量）、１—４代的世代历期、发育起点与有效积温、种群空间分布型进行研究。同时进行了氢化乐果防治实验。

Erythroneura sudra(Distant)is an important pest of Nane trees.It develops aboutsix generations per year in Gutian County of Fujian, piling up its generations from the 2ndgeneration.The high temperature from July to September is suitable for the pest to develop,which causes densely population、quick development rate、high fecundity and severe injury tothe plant. The paper dealt with life history、habit and propagation characteristic(sex radioand fecundity)、duration from the first to fourth generation、developmental zero、effectivecumulative temperature and spatial distribution pattern for the pest.Meanwhile the test of chemical control with omethoate was conducted。