竹杆锈病Stereostratum corticioides(Be-rk.et Br.)Magn近年来在江、淅、皖等省不断蔓延扩展,不少地方感病株率达50％左右,重病竹林达到90％以上,致使竹林衰败,甚至枯死。病菌夏孢子是该病的唯一侵染源,产生于冬孢子堆下,没有冬孢子堆的地方一般不产生夏孢子堆。根据这一特点,我们选择3月上、 In recent years, it has been spreading and expanding in many provinces such as Jiangsu, Anhui and Anhui Provinces. In many places, the rate of susceptible plants reaches about 50%, and seriously ill bamboo reaches more than 90% Decay, even dead. Chlamydomonas is the sole source of infection for the disease and is produced under the winter sporophyte, where it is not normally produced in the absence of the winter sporophyte. According to this feature, we choose March,