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稻曲病是危害水稻谷粒和花穗的病害。由于病菌生长的有利条件与稻作生长良好的条件相似,所以,过去人们把病害的出现当作丰收年份的标志,在防治上不予重视。近年来随着感病品种的扩大和病菌的逐年积累,此病在南方稻区大面积流行,为害程度越来越严重,已成为二季晚稻穗期的重要病害之一。1984年10月,我们在测报区调查,感病品种汕优6号最高病穗率31.48%,百丛病粒1278粒;一般病穗率6—8%,百丛病粒106—150粒,对水稻的产量与品质影响较大,
False smut is a disease that damages rice grains and spikes. Because the favorable conditions for the growth of germs are similar to the good conditions for rice growth, in the past people used the appearance of diseases as a symbol of the harvest years and neglected the importance of prevention and control. In recent years, with the expansion of susceptible varieties and the accumulation of pathogens year after year, the disease has become more and more serious in the southern rice area and has become one of the most important diseases in the second season of late rice. In 1984 October, we surveyed the report area, the highest susceptible varieties of Shanyou 6 disease rate of 31.48%, 1278 grains of plexus; general sick ear rate of 6-8%, 106-150 capsules, Great impact on the yield and quality of rice,