生姜高产高效优化施肥方案研究

A Study of Fertilizer Technique High Yield and Benefit for Ginger

采用3因子5水平最优回归设计方法,建立了N、P、K肥与生姜产量的数学模型。由模型得知:①3个因子对产量的影响顺序为钾肥>氮肥>磷肥;②产量>58 500.00 kg/hm2、收入>91 000.00元/hm2的施肥方案为,施N(X1)331.44～427.98 kg/hm2,P2O5(X2)59.88～93.52 kg/hm2,K2O(X3)273.99～425.82 kg/hm2。

A mathematical model is established by using three-factors and fiveqevels the best regression design method. The relations of Ginger production and its profit to potash, nitrogenous and phosphate fertilizer application have been studied.The result shows that the three -factors effects to the Chinese cabbage production and its profit is increasing with the applied order of phosphate, nitrogenous and potash fertilizer; that the optimum fertilizer application scheme is N 331.44～427.98 kg/hm^2, P2O5 59.88～93.52 kg/hm^2and K2O 273.99～425.82 kg/hm^2 if the production will reach over 58 500.00 kg/hm^2, and if its profit will reach over 91 000.00 kg/hm^2.