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近年来在我区胡杨(populus euphraticaOliver)苗期锈病(Melanpsora pruinosae Tr-anz.)发生十分严重,秋季病株率常达100%,感病指数高达70-100,常造成幼苗大量枯死。五十年代以来,在国内有些地区,此病已成为胡杨播种育苗成败的限制因素。化学防治胡杨锈病,是综合防治的重要手段之一,但一直缺乏比较理想的药剂。1981年,我们在中国农科院植保所的支持下,用具有内吸传导性能的粉锈宁对此病作了药效试验,取得良好效果。在此基础上,1983年我们
In recent years, Populus euphratica Oliver has a very serious disease of seedling rust (Melanpsora pruinosae Tr-anz.). The rate of diseased plants in autumn is often up to 100% and the index of infection is as high as 70-100. Since the 1950s, in some areas in China, the disease has become the limiting factor for the success or failure of poplar seedling planting. Chemical control of poplar rust, is an important means of comprehensive prevention and treatment, but has been the lack of more ideal agent. In 1981, with the support of the Institute of Plant Protection of Chinese Academy of Agricultural Sciences, we conducted a pharmacodynamic test on this disease with triadimefon which has internal absorption and conduction properties and achieved good results. On this basis, we 1983