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稻瘟病是我区水稻生产上的重要病害之一。近年以来,由于施肥水平和密植程度的不断提高,在有的地方稻瘟病的发生较为严重。其发病的轻重和损失的大小常因年份而有所不同,这里关系最大的是:发病地周围稻瘟病菌存在基数的多少,感病品种的种植以及栽培方法和环境因子等常能促进或抑制病害的发展。去年台州各地稻瘟病的发生较往年轻,其原因就是更换感病品种,适当施肥,改进栽培方法,强调合理运用水肥等。另外,七一年气候的干旱,也是稻瘟病减轻的一个因素。
Rice blast is one of the most important diseases in rice production in our district. In recent years, due to the continuous improvement of fertilization and planting density, the occurrence of rice blast is more serious in some places. The severity of the disease and the size of the loss often vary according to the year. The most relevant here is the number of M. grisea around the place of incidence, the cultivation of susceptible cultivars, cultivation methods and environmental factors, etc., often promote or inhibit Disease development. Last year, the occurrence of rice blast in Taizhou was younger than that in other places. The reason was that the replacement of susceptible varieties, proper fertilization and cultivation methods were emphasized, and the rational use of water and fertilizer was emphasized. In addition, the climate drought in July 2007 is also a factor in alleviating the rice blast.