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为探讨人参氮素营养规律，在基肥不同施氮量（０，１０，２０，３０，４０ｇ／ｍ２）条件下．采用（１４）Ｃ示踪方法和化学分析方法，测定了人参对（１４）ＣＯ２同化能力，ＮＲ活性，Ｎ、Ｐ、Ｋ营养的吸收，糖、蛋白Ｎ、非蛋白Ｎ以及人参皂甙的变化。结果表明，四龄参在基施氮肥１０ｇ／ｍ２，（１４）ＣＯ２同化能力，ＮＲ活力最高；基施氮肥３０ｇ／ｍ２时吸Ｋ量下降；基施氮肥４０ｇ时吸Ｎ量、ＮＰＮ（蛋白Ｎ）与ＰＮ（非蛋白Ｎ）、ＮＰＮ／ＰＮ值下降，Ｃ／Ｎ值下降４３％，总可溶糖、蔗糖下降，淀粉增加。五龄参时，基施氮肥４０ｇ／ｍ２处理组还原糖增加６０％左右，皂甙含量下降。
In order to explore the nitrogen nutrition law of ginseng, basal fertilizer under different N rates (0, 10, 20, 30, 40g / m2). (14) C tracing method and chemical analysis were used to determine the changes of (14) CO2 assimilation capacity, NR activity, N, P and K nutrient absorption, sugar, protein N, non-protein N and ginsenoside. The results showed that the relative content of CO2 assimilation ability and (14) CO2 assimilation ability were the highest in the fourth stage of nitrogen application, while the K uptake was decreased when the nitrogen application rate was 30g / m2. The N uptake amount, NPN (protein N ) And PN (non-protein N), NPN / PN value decreased, C / N value decreased by 43%, total soluble sugar, sucrose decreased, starch increased. Five-year-old participants, the base of nitrogen fertilizer 40g / m2 treatment group reducing sugar increased by about 60%, saponin content decreased.