【摘要】 目的:研究氮肥(N)、磷肥(P2O5)、钾肥(K2O)配施对柴胡产量的影响。方法:采用三因子二次回归饱和D-最优设计。结果:柴胡生物量的最优施肥方案为氮肥120.3~333.3 kg/hm2、磷肥0~939.45 kg/hm2、钾肥0~227.25 kg/hm2;根冠比的最优施肥方案为氮肥62.66~333.3 kg/hm2、磷肥0~922.54 kg/hm2、钾肥0~227.25 kg/hm2;根产量的最优施肥方案为氮肥34.5~333.3 kg/hm2、磷肥0~939.45 kg/hm2、钾肥0~227.25 kg/hm2。结论:柴胡的产量与氮、磷、钾的施肥量有紧密联系。更多还原

【Abstract】 Objective: To study the effect of different fertilizer assortment（nitrogenous,phosphorus and potassium） on Bupleuram scorzonerifolium yield.Methods:Three factors were designed by quadratic regression and D-optimum designation.Results:As far as the biomass concerned,the best design of fertilizer was N 120.3～333.3 kg/hm²,P₂O₅ 0～939.45 kg/hm²,K₂O 0～227.25 kg/hm².As to R/T,the best design was N 62.66～333.3 kg/hm²,P₂O₅ 0～922.54 kg/hm²,K₂O 0～227.25 kg/hm².And for the root weight,the best design was N 34.5～333.3 kg/hm²,P₂O₅ 0～939.45 kg/hm²,K₂O 0～227.25 kg/hm².Conclusion:Application quality of nitrogenous,phosphorus and potassium fertilizer are closely related with yield of B.Scorzonerifolium.更多还原