氮磷钾平衡施肥对茉莉花生长和产量的影响

Effect of Balance Fertilization on Growth and Yield of Jasmine

采用三因素五水平通用旋转组合设计,对影响茉莉花产量的3个主要因素,即N(X1),P(X2),K(X3)进行大田试验,建立产量与N、P、K3因子的肥料试验模型,并采用降维法对所建立的数学模型进行分析,确定其最佳施肥量。试验结果表明,茉莉花的产量从整体上来看与N成负相关,与P、K成正相关,作用的大小顺序为K>P>N。最佳施肥量为氮肥(N)132 4～197 6kg/hm2,磷肥(P2O5)166 6～197 4kg/hm2,钾肥(K2O)126 8～155 3kg/hm2。

By using the quadratic rotational combination besign in purple paddy field, studies were done on the effect of three factors (N, P, K). N, P, K fertilizer was a major factor which affected the yield of jasmine. The model of fertilizer effect was established by reducing dimensional analysis. The results indicate that: the yield of jasmine has a negative correlation with supply of nitrate and a positive correlation with supply of P, K from overall. The order of N, P, K influence on the yield of jasmine is K>P>N. The optimal combination of N, P, K is 1324～1976?kg/hm2 N, 1666～1974 ?kg/hm2 P2O5, 1268～1974?kg/hm2 K2O.