1988年,泗阳县史集、临河两个乡的2000亩意大利杨树林遭到杨尺蠖严重危害。1989年,杨尺蠖危害区已扩大到4个乡,面积达2.5万多亩,受害更加严重。 杨尺蠖食性很杂,不仅危害杨树,也危害柳树、榆树、苹果、梨树、葡萄等树木以及小麦、油菜、棉花等农作物。 In 1988, the history of Siyang County, Linhe two township of 2000 acres of poplar trees in Yangpu, Germany was severely endangered. In 1989, Yang Zhaogu Hazard Zone has been expanded to 4 townships, covering an area of ​​25,000 mu, more serious victims. Young chickens have very different dietary habits, not only endangering poplar but also endangered trees such as willow, elm, apple, pear, grape and crops such as wheat, rape and cotton.