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研究氮肥不同施用量与病虫发生情况及产量之间的关系。试验结果表明,随着氮肥施用量的增加,稻瘟病的发生逐渐加重,越到成熟期表现越明显;纹枯病和
To study the relationship between different application rate of nitrogenous fertilizer and pest occurrence and yield. The results showed that with the increase of nitrogen application rate, the occurrence of blast was aggravating, and the more obvious was the maturity stage. The sheath blight and