青杨脊虎天牛防治技术

针对黑龙江省青杨脊虎天牛发生面积大、蔓延快、危害重的现实,对其防治技术进行了研究。结果表明,小叶杨与落叶松混交林被害株率为14%~16%,而小叶杨纯林被害株率则为42%~56%;小青杨与樟子松混交林被害株率为8%,小青杨纯林被害株率为35%~84%。8%的绿色威雷微胶囊剂和3%的氯氰菊酯微胶囊水悬浮剂喷雾防治成虫,效果在75%以上(100液);大力士和氧化乐果树干基部注射防治幼虫,效果达70%以上;10g/m3以上剂量磷化铝片剂熏蒸受害原木,防治效果可达100%。

Control Technique for Xylotechus rusticus L. (Coleoptera: Cerambycidae)

An experiment was conducted to study the control technique for Xylotechus rusticus L. , which breaks out on large scale areas in Heilongjiang Province, disperses rapidly and brings serious damages. Results showed that the rates of damaged trees were 14% - 16% and 42% - 56% in Populus simonii Cart. stands mixed with larch and pure P. simonii stands, respectively, while 8% in P. pseudo-simonii Kitag. stands mixed with Pinus sylvestris var. mongolica Litv. , 35% 84% in pure P. pseuclo-simonii stands. Both control effects of spraying 100 times solution of 8.0% Luseweilei microcapsules and 3% cypermethrin microcapsules to control the adults were above 75%. Dalishi and omethoate were injected into the base of damaged trees to control larvae, and their control effects were over 70%. While fumigating damaged logs with 10 g/m^3 of aluminum phosphide tablets brought a control effect of 100%.