用^(15)N示踪法研究人参吸氮及其对^(14)C同化物分配的影响  

ABSORPTION OF NITROGEN BY GINSENG AND EFFECT OF NITROGEN ON 14 C ASSIMILATE DISTRIBUTION

作　　者：孟宪局[1] 张平[1] 刘铜[1] 

机构地区：[1]吉林农业大学

出　　处：《核农学报》1999年第1期34-38,共5页Journal of Nuclear Agricultural Sciences

摘　　要：利用１５Ｎ示踪法研究了人参对肥料氮的利用和损失及氮对人参光合同化产物分配的影响。结果表明，人参对肥料氮利用率，１年为９８５％，２年为１９０６％；肥料回收率第１年为８１５９％，第２年为６９７８％，２年肥料氮损失率为３０２２％。供氮１０ｇ／ｍ２时，人参的１４ＣＯ２同化力以及硝酸还原酶（ＮＲ）活性最高；供氮４０ｇ／ｍ２时，总可溶性糖、蔗糖含量下降，淀粉含量增加，人参皂甙含量下降。By using 15 N and 14 C tracer technique the utilization, recovery and loss rate of N fertilizer in ginseng ware studied. With different applying levels of 0,10,20,30,40gN/m 2 14 CO 2 assimilating ability, NR activity, N compound, sugar and ginseng saponin were determined. The resules showed that the N fertilizer utilization rate was 9 85% in the first year, the accumulative utilization rate for two years was 19 06%. Recovery rate of the fertilizer N was 81 5% in the first year and 69 78% in second year. Loss rate of the fertilizer N was 30 22%. With the treatment of 10gN/m 2, 14 CO 2 assimilation ability and NR activity was the highest. With the treatment of 40gN/m 2, total soluble sugar, sucrose and ginseng saponin content decreased and starch content increased.

关 键 词：人参 氮 吸收 碳 光合同化产物 分配 同位素示踪法 肥料运筹 

分 类 号：S567.51[农业科学—中草药栽培] S143.1[农业科学—作物学]