摘要
柿长绵粉蚧Phenacoccus pergandei Cockrell是近年来严重危害柿树的重要害虫。该虫在河南省郑州地区1年发生1代,以3龄若虫在枝条上和树皮缝中越冬。每年3月上旬越冬若虫开始为害,4月中旬雌成虫继续为害。4月下旬开始产卵,卵期约20d。5月上旬卵开始孵化,5月中旬为卵孵化盛期。幼虫有3个龄期,以3龄若虫于10月下旬开始越冬。7种药剂对柿长绵粉蚧的田间药效试验结果表明,40%杀扑磷乳油1000倍液、3%高渗苯氧威乳油1000倍液、25%噻嗪酮可湿性粉剂2000倍液对柿长绵粉蚧具有良好的防效,药后7d和药后15d的防效均达90%以上。
Phenacoccus pergandei Cockrell,a pest of persimmon trees occurred seriously lately.It has one generation per year in Zhengzhou,Henan Province,overwintered as 3rd instar nymphs in branches and crevices in the raw bark.The overwintered nymphs begin to damage the trees in early March.The adults occur in mid-April.The female adults start to lay eggs in late April and the oviposition lasts for about 20 days.Eggs begin to hatch in early May with peak in mid-May.The nymphs have 3 instars.The 3rd instar overwinters in late October.The experimental results with 7 pesticides against P.pergandei showed that 40% methidathion EC（1 000-fold dilution）,3% high permeation fenoxycarb EC（1 000-fold dilution）,25% buprofezin WP（2 000-fold dilution） has excellent result with over 90% effectiveness within 7 d and 15 d after the treatment.
出处
《昆虫知识》
CSCD
北大核心
2008年第5期808-810,共3页
Entomological Knowledge
关键词
柿长绵粉蚧
生活史
生活习性
田间防效
Phenacoccus pergandei,life cycle,living habit,controlling efficacy
