| The Effect of Different Nitrogen Form on Key Enzyme Activity of Sugarbeet（Vulgaris L.） Carbon and Nitrogen Metabolism |
| LICai－feng MAFeng－ming |
| 关键词：甜菜 硝态氮 氨态氮 氮形态 酶活性 碳代谢 氮代谢 |
| 主要内容：This article analyses the effect of the proportion of the different nitrogen forms on key enzyme activity of carbon and nitrogen metabolism under the condition of nutritional water while Tian Yan-7 was used as experimental material.The result showed that nitrate reductase(NR) activity in the leaves gradually enhanced with the increase of NO3^-,No matter in root or leaves,glutamina synthetase(GS) activity first enhanced with increasing NH4^+ when NH4^+ was lower than that of NO3^-,and GS activity was the highest when NH4^+ and NO3^- was equal,then GS activity declined with NH4^+ increasing further,In the anaphase of growth,synthetic activity in root of sucrose synthetase(SS) in the mixed NH4^+ and NO3^- was obviously highr than or NO3^- alone,Both of the root and sugar yields were the highest when the proportion of NH4^+ and NO3^- was 1:1. |
| 《东北农业大学学报：英文版》 2002,9(1).-29-34 |
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