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用~(15)N示踪研究证明,二、三年生人参植株中,来自NH_4—N占全N百分数(Ndffa),分别相当于NO_3—N Ndffa的67.4和61.2％;NH_4—N的利用率,分别为NO_3—N利用率53.4和52.0％,后者明显优于前者。NO_3—N的Ndffn,两种年生人参,分别为豆饼—N的142.1和167.7％;利用率则分别为豆饼—N的120和119％,无机N显然更易被吸收。人参的营养生理特性,与多数旱田作物类似。
The ~ (15) N tracing studies demonstrated that NH_4-N accounts for 67.4 and 61.2% of the NO_3-N Ndffa, respectively, in the second and third year ginseng plants. The utilization rate of NH_4-N , Respectively, the NO_3-N utilization rate of 53.4 and 52.0%, which is significantly better than the former. NO_3-N Ndffn, two kinds of annual ginseng, were 142.1 and 167.7% of soybean cake -N; utilization rate was 120 and 119% of soybean cake -N respectively, the inorganic N is obviously easier to be absorbed. The nutritional and physiological characteristics of ginseng are similar to those of most dryland crops.