论文部分内容阅读
稻白叶枯病是广西水稻重要病害之一,其发生分布地区,据1960年全区病虫害普查队普查的结果计有61个县市。惟其发生为害程度因年份、地区而有颇大差异,1957年以前只是零星发生,1958年较为普遍,1959年在玉林专区各县及梧州专区的贺县等地曾一度流行猖獗,1960年以后发生又转轻微,但仍不时有个别地区在小面积上严重发生。近两年来,我们进行了一些有关发生流行规律的观察,现将初步结果报告如后,供作参
Rice bacterial leaf blight is one of the important diseases of rice in Guangxi. The occurrence of rice bacterial blight is distributed in the area. According to the results of the census of the survey team of pests in 1960, 61 counties and cities count. However, the degree of its occurrence was quite different due to the year and the region. It only sporadically occurred before 1957, which was more common in 1958. It was once prevalent in He County and other prefectures of Wuzhou Prefecture in 1959 and occurred after 1960 Turn slightly, but from time to time there are some areas in a small area of serious. In the past two years, we have conducted some observations on the prevalence of the epidemic. We report the preliminary results as follows