黑荆树又名澳洲金合欢,是世界著名的速生鞣料经济树种。五十年代以来,我国两广、云、贵、浙、闽、川、赣等地相继引种并建立栲胶原料基地。近年来,浙南地区发现有苗木白粉病为害。1986年瓯海县12个苗圃调查,发病率高达62～96％,苗木死亡率12～38％,给黑荆树生产带来很大的危害。黑荆树苗木 Acacia, also known as Acacia, is a world famous fast-growing tanning economic tree species. Since the 1950s, Guangdong, Guangxi, Yunnan, Guizhou, Zhejiang, Fujian, Sichuan, Jiangxi and other places have been introduced and the establishment of the base of raw materials. In recent years, southern Zhejiang Province found that powdery mildew damage. In 1986, 12 nurseries were surveyed in Ouhai County. The incidence rate was as high as 62-96% and seedling mortality rate was 12-38%, which brought great harm to the production of black wattle. Black wattle seedlings