以蒙古黄芪为材料，研究了氮钾耦合对黄芪种子产量和质量的影响。结果表明，施氮可提高黄芪种子产量，提高蛋白质含量；施钾可提高种子淀粉含量。在黄芪现蕾期和盛花期追施尿素 120 kg/hm2和喷施3 g/kg 磷酸二氢钾溶液2次(间隔7 d)，种子产量最高，为136.65 kg/hm2，较不追肥处理增产15.40%；结实率为54.20%，较不追肥处理提高7.6百分点；种子千粒重达到8.04 g，较不追肥处理增加0.32 g。

With triennial Astragalus membranaceus var. mongholicus as materials， the effects of nitrogen and potassium coupling on seed yield and quality of Astragalus membranaceus is studied. The result indicates that nitrogen fertilizer could increase the seed yield and protein content of Astragalus membranaceus， potassium fertilizer could increase the seed starch content of Astragalus membranaceus. When topdressing 120 kg/hm2 CH4N2O and spraying 3 g/kg KH2PO4 for 2 times at squaring stage and full-bloom stage， the seed yield attained to the highest value of 136.65 kg/hm2 and increased 15.4% compared with control， the maturing rate is 54.20% and increased 7.6 percent point compared with control， the thousand kernel weight is 8.04 g and increased 0.32 g compared with control.

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甘肃省农业科学院中药材重大科技创新专项(2013GAAS03-02)；国家基本药物所需中药材种子种苗繁育基地建设(国中医药办规财发[2013]41)；甘肃省道地中药材产业科技攻关项目(GYC14-01)。