摘要
马尾松毛虫在福建一年发生 2 - 3代 ,其 1龄和 2龄幼虫群集取食 ,成虫昼伏夜出 ,以 2 l:0 0 - 2 3:0 0时活动最盛 ,趋光性强 ,雌蛾产卵量平均为 193粒。通过生物农药“天时”对松毛虫四龄幼虫的毒力测定 ,结果表明 :“天时”对其幼虫具有较高的活性 ,4 8h的 LC50 为 0 .0 0 0 15 4mg/ m L。这为马尾松毛虫的综合防治提供了理论依据。
Dendrolimus punctatus has 2-3 generations a year in Fujian,1 and 2 instar larvae takes food in groups, imago is active in the day and keeps quiet at night and the active peak time is 21:00 to 23:00, and imago has a high phototaxy . The female imago average amount of ovum are 193. The toxicity of Tishi against the 4th instar larvae of Dendrolimus punctatus was measured in lab. The result shows that Tishi has a obvious efficiency to Dendrolimus punctatus and larvae LC 50 is 0.000154 mg/ml after 48h. All these studies provide a basis for IPM of Dend rolimus punctatus.
出处
《武夷科学》
2004年第1期102-105,共4页
Wuyi Science Journal
关键词
马尾松毛虫
形态特征
生活习性
生物防治
Dendrolimus punctatus
Morphology
Habit of life
Toxicity test
