贵阳地区桃一点小叶蝉发生规律及防治

Occurrence of Typhlocyba sudra and its Control in Guiyang

桃一点小叶蝉在贵阳是桃和碧桃的重要害虫之一。在贵阳一年发生４代，以第４代成虫在常绿树或杂草上越冬。早春３月从越冬寄主上迁飞到桃树上，１１月中旬桃树落叶迁至越冬寄主上。测定４种药剂的药效，以２０％灭扫利和４０％氧化乐果防效最好，应交替使用，以免产生抗药性。

The peach leafhopper( Typhlocyba sudra )is one of the important insect pests of peach tree in Guiyang.There were four overlapping generations a year.The fourth generation adults overwinter at evergreen trees and weeds.The overwintering adults move from overwintering host plants to peaches in each March.Four insecticides were tested.The results indicated that Fenpropathrin and Omethoate were very effective in controlling the peach leafhopper.