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稻瘟病是我区水稻的重要病害,对水稻产量影响很大。据调查,1953～1963年的11年中,水稻因稻瘟病危害有4年(1956、1959、1954、1953年)损失产量2～3成;有3年(1958、1966、1961年)损失产量1～2成左右;有4年(1957、1955、1962、1963年)发病较轻,损失产量1成以下。特别是1956年发生最严重,永宁、青铜峡、灵武等地都有几百上千亩的成片稻田颗粒无收,当地农民对此严重情况记忆犹新。因此,防治稻瘟病是保证水稻生产的重要措施
Rice blast is an important disease of rice in our district and has a great impact on rice yield. According to the survey, in the 11 years from 1953 to 1963, the damage of rice to rice blast occurred in 4 to 19 years (1956, 1959, 1954, 1953), and the yield was lost from 2 to 30 percent. There were 3 years (1958, 1966, 1961) 1 ~ 2 into about; 4 years (1957, 1955, 1962, 1963) less incidence, loss of yield below 10%. Especially in 1956 the most serious, Yongning, Qingtongxia, Lingwu and other places have hundreds of acres of rice crop failure, the local farmers still fresh memories of this serious situation. Therefore, the prevention and control of rice blast is an important measure to ensure rice production