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近几年来,红缘天牛在沧州枣区发生危害形势日趋严重,尤其是在多年生枣树上大量发生,局部危害严重,有的地方一棵树上达百头之多,虫口密度大的惊人。该虫易造成树体衰弱,枝干干枯、风折,严重时常出现全树死亡,给大部分枣农造成了极大的经济损失,严重打击了枣农的栽培枣树的积极性。另外,该虫危害时没有排粪孔,外表不易发现,防治难度较大。所以,为有效防治该虫,我们进行了大量的防治试验,掌握了该虫的形态特征、发生规律、危害特点
In recent years, the red edge of Tian cow jujube district in Cangzhou hazardous situation is worsening, especially in perennial jujube occurred in large numbers, local hazards, in some places as many as a tree up to hundreds of trees, population density alarming . The worm easily cause the tree body weakness, branch dry, wind break, serious all the trees often die, causing most of the jujube farmers caused great economic losses, severely hit the date jujube cultivated jujube enthusiasm. In addition, the worm does not endanger the fecal hole, the appearance is not easy to find, prevention and treatment more difficult. Therefore, in order to effectively control the insects, we carried out a large number of control experiments, mastered the morphological characteristics of the pest, the occurrence of the characteristics of hazards