近年来,随水稻肥床旱育栽培技术的推广,恶苗病的发生明显加重,1995年全市种植2万多亩旱育稀植水稻,发病田块占总田块数的70％左右,病田病株率一般为1～3％,重者5～10％,少数特重田块达30％左右,产量损失2成以上,已经成为水稻旱育稀植增产技术推广应用的一大障碍。为此,本站从 In recent years, with the popularization of dryland cultivation techniques of paddy rice, the occurrence of bad-smelling disease has obviously increased. In 1995, the city planted more than 20,000 mu of dry-cultivated and sparsely-planted paddy rice, and the amount of the blighted field was about 70% of the total number of fields. Plant disease rate is generally 1 to 3%, 5 to 10% of the weight, a few special heavy field block up to 30%, more than 2 percent of the loss of output, has become a major obstacle to the popularization and application of dry cultivation technology. To this end, this site from