论文部分内容阅读
应用抗病品种是防治稻瘟病的主要措施.抗稻瘟病品种“窄叶青”在病区推广初期,连种几造基本未发现稻瘟病,有效地控制稻瘟病的流行.但“窄叶青”在一个病区连种几年后,很快从抗病变为感病,使稻瘟病又流行成灾,给生产带来损失.典型的历史稻瘟病区从化县吕田公社莲麻大队,1973年前,稻瘟病是
The application of disease-resistant varieties is the main measure to prevent and control the rice blast.Anti-Blast resistant cultivar “Narrow-leaf green ” In the initial stage of the ward’s promotion, even few species of rice blast were found basically and the control of the blast was effective. Narrow leaf green "Even in a ward even a few years later, the disease soon became susceptible to the disease, so that the epidemic of rice blast epidemic, resulting in losses to the production of a typical history of rice blast zone Conghua County Lutian commune Lin Ma brigade, 1973, rice blast is