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近几年来,由于气候和耕作制度变化等原因,玉米病害的种类也有所增加,青枯病(俗称晒煞瘟、干瘪瘟)等新病害逐渐在我县北山、长乐等地发生为害。一九七二年以来,在秋玉米上发生更为严重,损失一般在1～1.5成,高的达2成以上。此病已成为我县玉米的主要病害之一,影响粮食产量提高的拦路虎。为了摸清此病的发生和发展规律,寻找有效的防治方法,从去年开始我们进行了这项工作,现将所得的材料和观点简报如下。
In recent years, due to climate and farming system changes and other reasons, the types of maize diseases have also increased. Bacterial wilt disease (commonly known as sun-dried plague, dry deflagration) and other new diseases gradually in my county, Beishan, Changle and other places of harm. Since 1972, more serious damage occurs on autumn corn, with losses of 1 to 1.5% and a high of over 20%. The disease has become one of the major diseases of corn in our county, affecting the improvement of food production stumbling block. In order to find out the occurrence and development of the disease and find effective prevention and treatment methods, we have done this work since last year. The materials and views obtained are summarized as follows.