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为探讨不同施肥模式对杂交早稻产量影响,采用“3415”试验设计,通过回归分析获得肥料增产效应方程。结果表明,最大产量7388.8kg/hm2的施肥量是氮(N)、磷(P2O5)、钾(K2O)分别为141.57、79.84、55.73kg/hm2;最佳效益产量是7336.21kg/hm2,其最佳施肥量是氮(N)、磷(P2O5)、钾(K2O)分别为124.56、64.07、52.55kg/hm2。在湖南省武冈市中等肥力水平条件下,黄泥田种植杂交早稻氮、磷、钾最佳施肥量效应模型为当地杂交早稻制定施肥建议卡,指导农民科学施肥提供了技术参数。
In order to investigate the effect of different fertilization modes on the yield of early hybrid rice, the “3415” experimental design was adopted to obtain the yield increasing effect equation of fertilizer by regression analysis. The results showed that the maximum yield of 7388.8kg / hm2 was nitrogen (N), phosphorus (P2O5) and potassium (K2O) of 141.57, 79.84 and 55.73kg / hm2, respectively. The best yield was 7336.21kg / hm2, The best fertilizer amount was nitrogen (N), phosphorus (P2O5), potassium (K2O) respectively 124.56,64.07,52.55kg / hm2. Under the moderate fertility level in Wugang, Hunan Province, the optimal fertilization effect model of nitrogen, phosphorus and potassium in the hybrid rice planted with yellow muddy soil was to provide suggestion card for local hybrid early rice and guide the farmers to provide technical parameters for scientific fertilization.