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榆尺蠖(Apocheima cinerarius Erschoff)又名杨尺蠖、沙枣尺蠖,是我区主要食叶害虫之一。主要危害榆、杨、柳树。该虫发生期早、危害期短、幼虫发育快、食量大、食性杂,暴食嫩芽和嫩叶,造成树木二次发芽,树势衰弱,甚至死亡。全区1981年受害面积2000多亩,1984年发展为20000余亩亩、并连年成灾扩展蔓延。为掌握该虫的发生发展规律,控制其危害,我们从1981年开始,用4年时间,在武邑县西小里村、李贤兰村及饶阳县王岗村设固定点,对榆尺蠖的
Apocynaceae (Apocheima cinerarius Erschoff), also known as Yang Zhaobo, jujube feet 蠖, is one of the main leaf-eating pests in our area. Major hazards Yu, Yang, Willow. Early occurrence of the worm, the damage period is short, rapid development of larvae, food intake, miscellaneous eating, gluttonous shoots and young leaves, resulting in secondary germination of trees, tree weakness, and even death. In 1981, the affected area of the whole area was over 2000 mu. In 1984, it developed to more than 20,000 mu of mu, and spread and spread in successive years. In order to grasp the occurrence and development of the pest and control its harm, we started from 1981 and spent four years building fixed sites in Xixiao Li Village, Li Xianlan Village and Wang Gang Village, Raoyang County, Wuyi County,