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油桐角斑病(Cercospora aleuritidis Miyake)是我国南方油桐林区的主要病害,为害油桐叶片和果实,引起早期落叶和落果,影响油桐生长,降低油桐产量。该病自四十多年前欧世潢对病原菌定名以后,渐为人们熟知,但有关该病记载的资料不多,参照原有的方法防治效果甚微。为寻求有效的防治方法,作者于1982—1984年在对该病发生规律进行观察的同时,还进行了药剂防治试验,现将结果报道如下: 一、分布与分害油桐角斑病在贵州省主要分布于遵义、铜仁、黔南、黔西南等二十七个县。经十七个县
Cercospora aleuritidis Miyake is one of the main diseases in the oil tamarind area of southern China. It plays a key role in the leaves and fruits of oil tamarind tree, causing early deciduous and deciduous fruits, affecting the growth of tung tree and reducing the output of tung tree. Since the disease was named after more than 40 years ago in Europe, the disease has become more and more well-known. However, little information has been written about the disease and little effect has been achieved with reference to the original method. In order to seek effective control methods, the author observed the law of occurrence of the disease from 1982 to 1984, at the same time, also carried out drug control experiments, the results are reported as follows: First, the distribution and division Oil Tong Kok disease in Guizhou Provinces are mainly distributed in Zunyi, Tongren, Qiannan, Qianxinan twenty-seven counties. After seventeen counties