摘要
紫薇长斑蚜是紫薇叶面上最严重的害虫，还经常诱发紫薇煤污病。该虫在贵阳最多可产生２６代。正常条件下成蚜都是有翅蚜，当紫薇进入落叶休眠期，气温明显下降时，产生无翅成蚜，并以此为越冬虫态。若蚜历期相当于全代历期（通常为５～７ｄ），当天羽化的成蚜当天产若虫。成虫寿命、产蚜量及发育速率的回归式建立。虫口周年变化为单峰曲线。药剂防治，全年３～５次即可。
Grapemyrtle aphid,Tinocalles kalawaluokalani Kirkaldy,was the most serious pest of leaf on Grapemyrtle,Lagerstroemia indica L.,and also induced the sooty mould frequently.The aphid occurred 26 generations at most one year in Guiyang city.Its adults all were winged aphid in normal condition,but the wingless adults,which were the overwinering form,emerged when host entered gradually dormant period(leaves falled)and temperature dropped evidently in late Autumn.The lifetime of nymph was nearly equal to length of one generation,5～7 days in normal situation.Adult emerged and laid its nymphes usually in same day.Linear regression equations for nymph development(Y 1),adult life span(Y 2) ane egg-laying quantity(Y 3) were set up.Population dynamics was one peak cure a year.Control with pesticide 3～5 times each year was suitable.
出处
《江苏林业科技》
1998年第S1期189-193,共5页
Journal of Jiangsu Forestry Science & Technology
关键词
紫薇长斑蚜
直线回归式
虫口动态
防治
Tinocallis kalawaluokalani Kirkaldy
Occurrence
Linear regression equation
Population dynamics
Control
