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笔者1983—1985年在本所的水稻试验田和附近的一些乡、村观察,发现每一块田都有程度不同的稻曲病发生,发病轻的每穗有病粒2—10粒,发病重的每穗有病粒20—40粒以上,品种以“桂朝2号”和“汕优2号”发病最重。1985年在本所水稻试验中进行考种结果发现,每穗病粒在4—20粒之间,每增加5颗病粒,空秕率增加1—1.5％,千粒重降低0.18—0.22克。而且病粒厚垣孢子粉混入谷粒中,污染稻谷,降低米质,对人畜健康都有较严重的影响。稻曲病为害穗部单个谷粒,位置不定,受害的谷粒开始为浅绿色丝状小
The author observed from 1983 to 1985 in the experimental paddy field and some villages and villages in the vicinity, and found that each field has a different degree of false smut, with a mild incidence of 2-10 grains per panicle, with severe morbidity There are more than 20-40 grains per panicle, with “Gui Chao No.2” and “Shanyou No.2” the most serious. In 1985, the test of rice in our laboratory showed that the number of panicle per panicle was between 4-20, with each additional 5 particles, the rate of empty pan increased by 1-1.5% and the grain weight decreased by 0.18-0.22g. In addition, the chlamydospore powder is mixed into the grain, polluting the rice and reducing the quality of the rice, which has a more serious impact on human and livestock health. False false smut damage spike single grain, the location is uncertain, the victim of the grain began to light green filamentous small