石榴麻皮蝽蟓发生规律及其防治研究

OCCURRENCE OF ERTHESINA FULLOCTHUNBERG AND ITS CONTROL

石榴麻皮蝽蟓是云南蒙自石榴的主要害虫之一 ,该虫年发生 3代 ,世代重叠 ,以成虫越冬。成虫、若虫吸食嫩梢、枝、叶 ,花 (蕾 )、幼果、果实汁液。受害枝、叶枯萎、果实畸形、出现黑籽 ,易引发褐斑病、干腐病、软腐病发生流行。受害花 (蕾 )、果率一般达 1 2 %～ 1 5 % ,1 5 %～ 2 0 %。综合防治后 ,受害花 (蕾 )、果率降为 5 %～ 7% ,3%～ 5 %。

In an investigation, Erthesina fullocthunberg , one of the main pests affecting Punica granatum in Mengzi County, Yunnan Province, was found to have three overlapping generations in a year and overwinter as adults. Its adults and nymphs attacked the branches, leaves, buds and young fruits or sucked in the juice of pomegranate fruit, resulting in withering of the branches and leaves, deformation of fruit and browning of the seeds and making the tree more susceptible to the infection of brown spot, soft rot or Zythia versoniana Sacc. The practice of integated control reduced infection rate of the buds from 12%～15% to 5%～7% and of the fruit from 15%～20% to 3%～5%.