密植石榴综合施肥措施的数学模型研究

Study on Mathematics Model for the Synthetical Fertilization Practice of Close Planting of Pomegranate

[目的]为密植石榴的规范化栽培、规模化生产和科学研究提供一定的参考。[方法]采用五元二次正交旋转组合设计方案,在影响石榴产量的施肥因素中,选取纯氮、纯磷、纯钾、硼肥和有机肥施用量5个因素作为决策变量,以石榴产量为目标函数,建立石榴产量与5个因素的数学模型。[结果]通过计算机摸拟、筛选,获得了密植石榴单株产量为15 kg以上的施肥配套方案为：氮肥98.88～128.76g/株,磷肥1.372～1.500 kg/株,钾肥263.52～285.84 g/株,硼肥5.550～6.068 g/株,有机肥64.90～67.22 kg/株。[结论]要提高密植石榴的单株产量,首先应当注意氮肥和钾肥的施用。

[Objective] The research aimed to provide determinative references for the standardization planting,scale production and study of pomegranate＇ close planting.[Method] The model of a quadrotic orthogonal and pivoting regression were used for the designing.Five controllable factors were selected from the factors which affecting yield of the pomegranate,as independent variable,and the model of a quadratic,orthogonal and pivoting regression for five factors were established,for yield of the pomegranate.[Result]The simulation and screen were accomplished with computer,the matching program of fertilization was obtained under which the yield per plant over 15 kg.That was,nitrogen fertilizer 98.88-128.76 g per plant,phosphatic fertilizer 1.372-1.500 kg per plant,kalium fertilizer 263.52-285.84 g per plant,boron fertilizer 5.550-6.068 g per plant,organic fertilizer 64.90-67.22 kg per plant.[Conclusion] The use of nitrogen fertilizer and kalium fertilizer should be noticed when to improve the yield of per plant pomegranate.