水稻种子带菌是秧苗发病的重要初浸染来源之一.病区的水稻种子中常很有带病的谷粒,带病率一般在5%左右;严重发病田收获的种子带病率可高达50%以上.因此,水稻种子消毒处理是防治稻瘟病的一个重要环节.一九八一年我省早稻稻瘟病大流行,除因大面积栽培的珍龙系统品种抗瘟性丧失成为感病品种及气候条件适于发病外,水稻种子没有进行消 Rice seedling is one of the most important sources of early-stage infection of seedlings.The diseased rice seeds often contain diseased grains, with a prevalence of about 5%. Severe disease-harvested seeds can reach as high as 50% Therefore, the rice seed disinfection is an important part of the prevention and control of blast.In 1981, the province of early rice blast pandemic, in addition to large-scale cultivation of varieties of the system of pest resistance to loss of susceptible varieties and climate Conditions suitable for the disease, the rice seeds did not eliminate