星天牛的防治试验研究

星天牛在我国分布较广泛,能危害多种林木,近年来在椒江市木麻黄防护林中发生较严重,主要以幼虫钻蛀木质部,形成弯曲的蛀道,被害木轻则生长衰弱,重则易造成风折、风倒或整株枯死。此虫在椒江1年发生1代,以幼虫在木质部中越冬。对它有效的防治方法主要是:人工捕捉成虫;击杀卵和初龄幼虫;喷洒25％菊乐合酯或40％SN-851乳油1500倍液杀卵和小幼虫,用80％敌敌畏、90％敌百虫或40％SN-851乳油2000倍液,也可用20％杀灭菊酯、2.5％溴氰菊酯乳油2500倍液,将上述药液注入通气孔可收到90％的防治效果,用百部的块根堵塞通气孔,可获得87％左右的防治效果。

Control of Star Cerambycid-beetle

Anoplophora chinensis (Forster), star cerambycid-beetle, is an important severe pest of Casuarina equisetijolia in Jiaojiang City of Zhejiang Province in recent years. This insect has one generation a year in Jiaojiang. It overwinters as larva in its own burrow within the tunnel. Effective control methods are as following: Handpicking adult from the early June to late,July and sometimes; Being killed by spraying with decamethrin dimetheate or SN-851 (methamidophos dimetheate) when the egg or larval instar stage; Injecting insecticides, such as dichlorvos or trichlo-rfon or decamethrin or sumicidin or SN-851, into the burrows on the trunks to kill the larvae in April or October and sometimes.