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几年来我区早季由于稻瘟病的发生流行,给某些社队造成不同程度的减产。一九七一年因稻瘟病全区损失粮食达五千万斤。尤其是山区社队,如武平县大木公社早稻一万二千七百三十八亩,严重发病损失达百分之五十以上的有三千七百多亩,全社因病损失粮食一百五十万斤。所以摸索早季稻瘟病发生规律,积极开展防治,是确保早稻高产稳产的重要问题。为此,我们作了如下的初步研究。
In recent years, the epidemic of rice blast in the early part of our district has caused certain concessions to some extent. In 1981, the region lost 50 million jin of grain because of the rice blast. In particular, the mountain community and commune, such as the 12788 mu of early rice in the Dacu commune of Wuping County and the 3,700 mu of diseases with a serious morbidity of more than 50%, caused a total food loss of 115 One hundred thousand pounds. So to explore the law of early blast and to actively carry out prevention and control is to ensure the high yield of early rice is an important issue. To this end, we made the following preliminary study.