黄杨绢野螟发生的危害与防治

Yellow Poplar Silk Wild Snout Moth Larva Harms and Protections

黄杨绢野螟危害小叶黄杨,可造成植株光杆枯死。在江西宜春市一年发生3代。各代幼虫发生期依次为:6月初至7月初、7月中旬至9月上旬、8月初至9月中、下旬。化学防治宜在1-2龄幼虫期,用40％乐斯本1500倍防效可达90％以上。

Yellow poplar silk wild snout moth larva harms small leave yellow poplar and leads to bare trunks of the plants dead and drying. It has occurred three generations in one year in Yichun of Jiangxi province. The larva's emergence period of every generation followed in the order below: early June to early July; middle July to early September; early August to middle and late September. Chemical protection should be used in the larva stage of 1-2 age and with 40% lesiben of 1,500 times can get over 90% protection.