桉树油桐尺蛾生物学特性及防治试验

在福建省仙游县开展桉树林油桐尺蛾的生物学特性观察与防治试验,结果表明:在福建仙游油桐尺蛾1 a发生3代,以蛹在土里越冬;翌年4月上旬—中旬成虫开始羽化,4月下旬为羽化盛期;第1代幼虫5月上旬孵出,5月下旬开始结茧化蛹,6月上旬成虫羽化,6月中旬为羽化盛期;第2代、第3代幼虫分别在7月上旬、9月中旬孵化,第3代幼虫10月下旬结茧化蛹进入越冬状态。采用溴氰菊酯烟雾剂进行应急化学防治可迅速降低虫口,灭幼脲Ⅲ号1 000倍液喷雾防治可控制该虫的危害。

Biological Characteristics of Buzura suppressatia Guenee and Its Control Test

Buzura suppressatia Guenee was the important injurious insect for Eucalyptus spp,the insect occurred for 3 generations in Xiangyou,Fujian every year,it overwintered by pupa in soil.The next year,adult eclosion began in the first 10 days～middle 10 days of Apr.,the last 10 days of Apr.was the eclosion peak period,the first generation of larva hatched out in the first 10 days of May,produced cocoon and pupated in last 10 days of May,the adult eclosion began in the first 10days of Jun.,and the middle 10days of Jun.was the eclosion peak period.The second,third generations of larvae began in the first 10 days of July,in the middle 10 days of Sep.,respectively,the third generation of larva produced cocoon and pupa and was in the overwintering status in the last 10 days of Oct.Control test result showed that Oil-Smoke agent was effective to control pest while it outbreaked,and chlorbenzuron 1000 times spray might reach the aim of controlling the damage.