江西道地药材车前子规范化栽培的配方施肥优化

Study on Optimal Fertilizer Techniques for Standardized Cultivation of Plantago asiatica L. as a Genuine Chinese Medicinal Materials in Jiangxi Province

[目的]优选车前子规范化栽培的施肥配方。[方法]通过二次旋转组合设计,建立车前子产量与氮、磷、钾和有机肥四因子的回归模型,利用DPS数据库系统确定最优施肥方案。[结果]车前子产量与氮、磷、钾和有机肥4因子的回归模型为:Y=2 937.44+105.46X1+17.06X2+62.69X3+265.18X4-251.17X21-80.01X22-150.62X23-55.67X24+22.75X1X2+22.75X3X4;以产量3 450 kg/hm2作为目标,配方施肥的系统优化方案为:施氮(尿素)247.65～314.81 kg/hm2;施磷(过磷酸钙)346.05～553.95 kg/hm2;施钾(K2SO4)213.3～340.425 kg/hm2;施有机肥(腐熟猪粪)32 737.5～35 782.5 kg/hm2。[结论]方程的拟合度较好,可以用来反映车前产量与氮、磷、钾和有机肥之间的关系。

[Objective] To study the optimal fertilizer techniques for standardized cultivation of Plantago asiatica L.[Method] Through the combination design of quadric rotation,the regression model of its production and the four elements like N,P,K and organic fertilizers was set up,the optimization of the mixed fertilization was determined by the application of DPS data base.[Result] The regression model was founded as： Y=2 937.44＋105.46X1＋17.06X2＋62.69X3＋ 265.18X4-251.17X21-80.01X22-150.62X23-55.67X24＋22.75X1X2＋22.75X3X4.Using 3 450 kg/hm2 as the critical value of system optimization scheme,the optimal mixed fertilization was the following： N fertilizer（urea） 247.65-314.81 kg/hm2,P fertilizer（calcium superphosphate） 346.05-553.95 kg/hm2,K fertilizer（potassium sulfate） 213.3-340.425 kg/hm2,organic fertilizer（digest pig manure） 32 737.5-35 782.5 kg/hm2.[Conclusion] The fitting degree of this formula is good enough to reflect the relationship between its yield and N,P,K and organic fertilizers.