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在我省江汉平原引种的欧美杨上,桑天牛发生严重。该虫在嘉鱼县为两年一代或三年一代。成虫白天聚集在桑、构树枝上取食嫩皮,夜间飞往杨树上产卵。根据这一特点,于杨树林分四周栽植桑、构树丛,在成虫羽化期间进行诱捕防治,可收到良好的防治效果;秋季结合营林措施,修剪虫枝;第二年春季用药棉签防治遗漏的幼虫,经过3—5年的努力,可使损失控制在经济阈限以内。
In the province of Jianghan Plain introduced Europe and the United States Yang, Sang Tian cattle serious. The insect in Jiayu County for two years or three generations. Adults gather in the mulberry during the day, tree nectar feeding nectar, fly to the poplar at night to lay eggs. According to this feature, planting mulberry trees in the four weeks, planting trees, during the emergence of adult trap trapping prevention and treatment, can receive good control effect; combined with the measures of forest management, pruning worm sticks; the second spring cotton swab prevention and control of missing Larvae, after three to five years of hard work, can keep losses under the economic threshold.