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桑白蚧(Pseudaulacaspis pentag OnaTargioni)也称桑介壳虫、桃介壳虫。该虫食性广泛,不仅危害果树,也危害园林植物,几乎世界各地均有发生。近几年该虫在我国杏产区普遍发生,甘肃、宁夏、山东、山西、河北、北京、天津等省市区的部分杏园发生严重。该虫在桃树上的发生规律及防治研究已有过许多报道,如北京(1960、1977)、山西太谷(1974)、上海市上海县(1987)等,但在杏树上的发生规律及防治的研究报道很少。为此,我们于1988—1989年在北京延庆辛庄堡杏树园对桑白蚧的发生规律进行了观察,提出了防治对策,并取得了较好的防治效果。现简述
Sang white scale (Pseudaulacaspis pentag OnaTargioni) also known as mulberry, peach scale insects. The worm infestation is widespread, not only endanger fruit trees, but also endangered garden plants, occur almost everywhere in the world. In recent years, the pest is common in China’s apricot producing areas. Some apricot gardens in some provinces and cities such as Gansu, Ningxia, Shandong, Shanxi, Hebei, Beijing and Tianjin have become serious. The insect pests in the occurrence of law and prevention and control has been reported in many reports, such as Beijing (1960,1977), Shanxi Taigu (1974), Shanghai Shanghai (1987), but the occurrence of the law in the almond And prevention and treatment of few reports. For this reason, we observed the occurrence of mulberry white scales in the almond grove of Xinzhuangbao, Yanqing, Beijing from 1988 to 1989, put forward control strategies and achieved good control effects. Now briefly