论文部分内容阅读
近年来,由于耕作栽培制度的演变和施肥水平的提高,玉米小叶斑病已成为我县秋玉米主要病害之一。据去年全县9个公社15个生产大队的调查,秋玉米发病面积达100%,病叶率在95%以上,一般田块病情指数也在40—50之间,严重田高达80以上。但由于对叶斑病的发生情况还缺乏了解,已经实施的防治办法,成效不很显著。为了了解玉米小叶斑病的发生发展规律,探索其防治途径,本所于1971年10月选择有代表性的社队进行了秋玉米小叶斑病发生情况和防治的调查试验。现将情况简述如下:
In recent years, due to the evolvement of cultivation and cultivation system and the improvement of fertilization level, maize leaf spot has become one of the major diseases of autumn corn in our county. According to a survey conducted by 15 production brigades of 9 communes in the county last year, the incidence of autumn corn was 100% and the incidence of diseased leaves was above 95%. The general field condition indices were also between 40-50 and severe fields were as high as 80 or more. However, due to the lack of understanding of the occurrence of leaf spot disease, the prevention and treatment measures that have been implemented are not very effective. In order to understand the occurrence and development of maize leaf spot disease and explore ways to prevent and control it, the Institute in October 1971 selected a representative of the commune to carry out the autumn corn leaf spot disease and prevention and control of the investigation. Now the situation is as follows: