近些年来,早稻种传病害恶苗病在我地呈上升趋势,发生程度加重,面积扩大,尤以机插稻和直播稻发病较重。重病田株率超过30%,严重影响水稻安全生产。究其原因,主要是放松了早稻种子的消毒处理,而药剂处理种子是控制该病等种传病害最为经济有效的方法,现将其病害症状和种子药剂处理方法介绍如下:恶苗病苗症状。感染恶苗病菌的早稻秧苗,一般在2.5叶期后,气温达30℃时,表现出徒长症状,病苗迅速长 In recent years, the early rice seed-borne diseases, bactericidal disease in my area is on the rise, the degree of occurrence increased, the area expanded, especially machine-inserted rice and direct seeding rice incidence heavier. Heavy disease rate of more than 30%, seriously affecting the safety of rice production. The reason is mainly to relax the early rice seed disinfection, and pharmaceutical treatment of seed is the most cost-effective way to control the disease and other diseases, now the disease symptoms and seed treatment methods are described below: . Early rice seedlings infected with Fusarium oxysporum generally exhibit lengthened symptoms when the temperature reaches 30 ° C after 2.5 leaf stages,