恶苗病是我省水稻主要病害之一,各稻区普遍发生,对产量影响很大。繁峙县大沟大队种植1,200亩水稻,发病率5—10%,每亩至少损失稻谷15—20斤。太原市南郊区五家庄大队14亩秧田,发病率平均40%,致使秧田全毁。目前推广的晋稻1号、京引174、京引127等品种都不抗恶苗病,所以必须采取防病措施。一、恶苗病症状及发病规律我省各稻区把恶苗病株叫成“大米稻、”“霸王稻”、“高秆稻”等,不少农民都误认为是大米出苗长成的特殊稻株,其实是病害所致。病状:当水稻长出2—3片真叶时,病苗徒长,比健苗细长。病株黄绿色,根系不发达,分蘖很少,节间显著伸长。节上常生许多倒生不定须根,茎秆表面着生白霉,以 Bakanae is one of the main diseases of rice in our province, the occurrence of various rice areas, a great impact on the yield. The fengzhi dagou brigade planted 1,200 mu of rice, the incidence of 5-10%, at least 15-20 kg of rice per acre loss. The southern suburb of Taiyuan Wujiazhuang brigade 14 acres of seedlings, the incidence rate of 40% on average, resulting in all destroyed seedling. The current promotion of Jin 1, Beijing cited 174, Beijing cited 127 and other varieties are not resistant to disease, so we must take preventive measures. First, the symptoms and incidence of stubborn Miao disease in our province to the stubborn disease called “rice,” “King of rice,” “tall straw” and so on, many farmers mistakenly believe that the emergence of rice grow into Special rice plants, in fact, caused by disease. Symptoms: When the rice grows 2-3 true leaves, the sickness is long and slimmer than the seedling. Strain yellow-green, underdeveloped roots, few tillers, internodes significant elongation. On the festival of many born uncertain fibrous roots, stalks on the surface of white mold to