Methods To analysis Astragalus membranaceus adult plant that its absorbing capacity of nitrogen,phosphorus,potassium and its growth quantity at different growth stages for evaluation of fertilizer need.

• 方法采用定期采样,分析不同生长期黄芪植株氮、磷、钾的吸收量及生长量,推算种植过程的科学施肥量。