水稻稻瘟病在江西平均3-4年大流行一次,1985年早稻因此损失稻谷2亿多公斤。1989年早稻又在700多万亩面积上大流行。从目前研究和生产水平,主要防治措施,一是利用抗病良种:二是施用有效的农药。后者防效虽好,但中长期预测技术不过关,不能及枣作好准备往往田间发病到相当程度才 Rice blast in Jiangxi an average of 3-4 years a pandemic, early rice in 1985 therefore lost more than 200 million kilograms of rice. In 1989, more than 700 million mu of morning rice was pandemic. From the current level of research and production, the main control measures, one is the use of disease-resistant varieties: the second is the application of effective pesticides. The latter effect is good, but medium and long-term forecasting technology, however, can not be prepared and jujube field disease often to a considerable extent