安徽铜陵药用牡丹不同生长期物质的积累和氮、磷、钾的吸收动态

目的探讨药用牡丹不同生长期氮、磷、钾的吸收规律及其种植的平衡施肥问题。方法采用定期采样,分析不同生长期药用牡丹氮、磷、钾的吸收量及生长量,推算种植过程的科学施肥量。结果药用牡丹地上部快速生长期主要在7月份之前,植株地上部对氮、磷、钾的吸收较高;氮、磷、钾的平均含量1.259%氮、0.114%磷、0.530%钾。从7月开始,地下部明显增重,此时期根部积累的氮、磷、钾较多:根氮、磷、钾的平均含量0.794%氮、0.108%磷、0.380%钾。结论药用牡丹植株生长每年的需氮约1 500 g、需磷160 g、需钾640 g。

Study on the Material Increase and N,P,K Absorption of Medical Peony in Different Growing Period from Tongling in Anhui Province

Objective To study the absorption rule and balance applying for the fertilizer N,P,K in different growing period of the medical peony. Methods Collecting the peony samples interval in fixed time and analysis the N, P,K absorption amount in different growth period and to calculate amount the scientific fertilizer applying. Result The organs above ground of medical peony developed very fast before July and needed moreN,P,K. The average contents ofN,P,Karel. 259%, 0.114% ,0. 530% ,respectively. From July, the organs under the ground start increasing the weight, in this period, the root system absorbed most of the N,P,K. And the average contents of N,P,K are 0.794%, 0.108%, 0.380%, respectively. Conclusion The annual needed of N,P,K for the medical pkony plant are 1 500 g, 160 g and 640 g, respectively.