西双版纳垦区自1965年发现季风性落叶病以来,病区逐步扩大,至七十年代后期,已遍及整个西双版纳植胶区。过去没有发生此病的临沧、德宏垦区,1984年7—8月份也相继在勐定、勐撒、瑞丽等农场和德宏试验站发生,并造成部份胶树停割。由于该病原也侵害割面,引起条溃疡病,因而某些年份发病较严重的林段,条溃疡病流行,使割胶生产蒙受损失。为 Since the discovery of monsoon deciduous disease in Xishuangbanna in 1965, the ward has gradually expanded, and it has spread throughout the Xishuangbanna area to the late seventies. In the past, Lincang and Dehong Reclamation Areas that did not have the disease occurred in the farms of July, July and August 1984 in Mengding, Mengza, Ruili, and Dehong Experimental Station, resulting in the stoppage of some gum trees. As the pathogen also affects the cut surface, causing ulcer disease, and thus in some years more serious disease in the forest, the ulcer disease prevalence, so that the production of tapping losses. for