球坚介壳虫(Didesmococcus koreanusBorchs)是梅树的重要害虫。除危害梅树外,还危害桃、李、杏、樱桃等多种果树。该虫主要是幼虫和雌成虫密集在枝干上吸取汁液为害。发生数量多时,枝干上虫体累累,使树势衰弱,受害严重时可使枝条枯死或全株死亡。此虫还繁殖快,一经发生,防治不当,二至三年内可毁灭大批梅园。 Didesmococcus koreanus Borchs is an important pest of the plum tree. In addition to endanger plum, but also endangered peach, plum, apricot, cherry and other fruit trees. The insects are mainly insects and larvae insects on the dense stems to draw juice damage. Occurred in a large number of time, the stems on the parasites, so that the weakness of the tree, severe damage can make the branches dead or whole plant died. This insect also reproduce fast, once occurred, prevention and treatment is inappropriate, two to three years can destroy a large number of plum garden.