秋花生优化施肥研究

Study on optimal fertilization for autumn peanut

运用310拟饱和最优回归设计.在沿海花生主产区(赤砂土)设置秋花生施用氮磷钾肥料试验,采用DPS数据处理系统模拟出留种田秋花生商品产量和施肥利润的氮磷钾肥料效应函数,极值判别结果均为非典型函数,通过频率分析方法寻优,分别获得秋花生较高产量(2 205.89 kg·hm-2)施肥组合为:Z1(N)=85.54 kg·hm-2,Z2(P2O5)=39.40 kg·hm-2,Z3(K2O)=93.61 kg·hm-2;较佳利润(8 325.46元·hm-2)施肥组合为:Z1(N)=88.10 kg·hm-2,Z2(P2O5)=45.36 kg·hm-2,Z3(K2O)=108.89 kg·hm-2。

A field experiment of nitrogen, phosphorous and potassium fertilizer application to autumn peanut was carried out in sandy field of the costal region of Fujian Province. The experiment was designed according to a saturation stimulating model of the optimum regression. A effect function of fertilizers on the yield and on the profits of autumn peanut were obtained from the experiment results. Fertilizers combinations for higher peanut-yield (y=2205. 89 kg · hm-2) were as follows: Z1 = 85. 54 kg· hm-2 N, Z2 = 39. 40kg · hm-2 P2O5, Z3 = 93. 61 kg · hm-2 K2O; fertilizers combinations for better profits (π=8325. 46 yuan · hm-2) were as follows: Z1 = 88. 10 kg · hm 2 N, Z2 = 45. 36 kg · hm-2 P2O5, Z3 = 108. 89 kg· hm-2 K2O.