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随着农业生产责任制的落实,农户要求增产的愿望迫切,不少农户只知道多施氮肥能增产,而忽视了氮肥施用过多会带来严重恶果。如偏施、重施氮肥、常使供给水稻的氮磷钾比例严重失调。结果招致稻瘟病的大量发生。为了从施肥方面寻求防治稻瘟病的技术,笔者采用四因素三水平正交试验法、就施肥方法、时期、数量、栽插规格及氮、磷、钾配比与发病的相关性进行了试验。试验田设在我县海拔590米的东源公社合港大队南塅生产队钟海立的一季稻田里。供试品
With the implementation of the responsibility system for agricultural production, farmers’ desire to increase production is pressing. Many farmers only know that more nitrogen fertilizer can increase production while neglecting the excessive use of nitrogen fertilizer can bring serious consequences. Such as partial Shi, heavy nitrogen fertilizer, often to provide a serious imbalance of N, P and K ratio of rice. The results lead to a large number of rice blast occurrence. In order to seek the technology of preventing and controlling rice blast from the fertilization aspect, the author carried out the experiment using the orthogonal experiment of four factors and three levels to test the correlation of fertilization method, period, quantity, planting specification and proportion of nitrogen, phosphorus and potassium. Experimental field is located in 590 meters above sea level at the commune in East commune Gangnan Nanxun production team Zhonghaili quarter of rice fields. testing sample