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水稻纹枯病,在1958年前虽有发生,但不严重。自1958年后,特别是推广了矮秆多穗型高产品种后,随着施肥水平的不断提高,已发展成为主要的病害,尤其是高产地区,已成为当前增产的主要障碍之一。在本地区的自然条件和栽培条件下,早稻纹枯病初发于五月下旬(绿肥早稻分蘖盛末期)、六月底至七月上中旬(抽穗至乳熟期)发生最重,直至收获均可发生。但入伏后有自然控制现象。而晚稻,在秧田就能发生,移栽后曾一度停止,在八月中又开始发生,九月中下旬发生最重。一般在十月中旬停止发展。
Rice sheath blight, although occurred before 1958, but not serious. Since 1958, especially after the popularization of dwarf and multi-spike high-yielding varieties, it has become a major disease with the continuous improvement of fertilization level, especially in high-yield areas, and has become one of the major obstacles to yield increase. Under the natural and cultural conditions in the region, early rice sheath blight occurred first in late May (late green tillering at early tillering stage of green manures), from the end of June to the middle of July (from heading to milking stage) till harvest Can happen. But after entering the natural control phenomenon. The late rice, seedlings can occur, once stopped after transplanting, began again in August, occurred in mid-September the heaviest. Generally stop development in mid-October.