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近年晚稻小球菌核病日趋严重,经近年调查分析,试验研究得:氮肥猛增,钾肥不足,是本病加重的主因;稻虱危害重会加重本病发生;后期断水过早亦显著加重本病。经1984—1986 年10个组合的小区重复及大区多点试验证实:在缺钾区于第一次耘田时,每亩施氯化钾15斤,比对照区10个组合平均株枯干率防效达70.56%,株病率防效达53.03%,亩增稻谷78.2公斤,增产率为22.13%;施钾又结合治纹枯病喷治井冈霉素一、二次,其10个组合与对照区比较平均株枯干率防效达79.85%,株病率防效为65.65%,亩增稻谷96.1公斤、增产率为
In recent years, Scab plays a more and more serious role in recent years. After investigation and analysis in recent years, the experimental study shows that the rapid increase of nitrogen fertilizer and the shortage of potash fertilizer are the main causes of this disease. disease. The 1984-1986 10 combinations of community plots and large area more experiments confirmed that: potassium deficiency in the first Yun Tian, 15 kg of potassium chloride per acre, compared with the control group 10 combinations average dry weight The control effect reached 70.56%, the plant disease rate reached 53.03%, and the increase of rice by 78.2 kg and the yield increase rate was 22.13%. The combination of potassium and the control of Rhizoctonia solani, Compared with the control group, the average dry weight of the plant reached 79.85%, the control rate of the plant disease was 65.65%, and the increase of the mu was 96.1 kg. The increase rate was