摘要
杜松皑粉蚧是杜松的重要害虫。该虫在内蒙古包头1年发生2代，以2龄若虫越冬。5月中下旬和7月中下旬是若虫危害的两个高峰期。在越冬代若虫活动盛期（5月中旬）喷洒2．5％溴氰菊酯＋40％氧乐果（1：3）1500～2000倍混合稀释液或40％氧乐果＋80％敌敌畏乳油1000倍混合稀释液2～3次，杀虫效果可达95％。
Crisicoccus juniperus (Tang) as a serious pest insect of Juniperus rigida Sieb. et Zucc. has two generations in Baotou, Inner Mongolia and overwinters 2nd instar nymhp. Two peaks for nymphs damage emerged in the mid-end or May and July, respectively. The results for the chemical control showed that 95% insecticidal effect could be obtained by spraying 1: 1500 -2000 mixed diluent of 2.5% deltamelthrin +40% omethoate (1; 3) or 1; 1000 mixed diluent of 40% omethoate +80% dichlorvos two or three times at the nymph period of 2nd generation.
出处
《昆虫知识》
CSCD
1996年第5期281-284,共4页
Entomological Knowledge
