摘要
硝态氮是氮素形态之一,植物体对硝酸氮的吸收是由一种可以产生电的协同运输机制来驱动的,硝酸氮的同化是在硝酸还原酶和亚硝酸还原酶的作用下还原成NH4+。硝态氮的一般营养功能可以通过近些年来的科技文献表现出来,主要有增施硝态氮可以提高作物的产量;通过控制硝态氮的数量可以防止硝态氮在蔬菜中积累,从而改善蔬菜的品质。另外,硝态氮在土壤中的积累与淋失对环境所造成的污染严重,本文将提出一些措施进行防治。硝态氮能促进铵态氮的吸收,平衡吸收氮素利于植物的生长发育。另外,硝态氮研究也存在不足,其中硝态氮在树木中研究还不算深入。
Nitrate(NO3-N) is one of different forms of nitrogen (N), NO3-N absorption by plants was droved by a coordination transportation mechanism can produce electricity. NO3-N assimilation was effected by Nitrate Reductases (NR) and Nitrate inferior Reductases (NiR) , NO3-N reduced ammona. The general nutritional function of NO3-N displays through the literature of science and technology of recently years mainly about increase NO3-N fertilizer can enhance the yield of the crops; through control NO3-N content are very important to prevent NO3-N accumulates in the vegetables, thus it can improve the quality of vegetables. Moreover, NO3-N accumulation and leaching out in the soil may causes the environment pollution seriously. This article will propose some measures to carry on preventing and controlling. NO3-N can accelerates ammonium(NH4+-N) absorption, the equilibrium of N absorption is benefit to plants growth .For few similar studies were carried out with tree species, it need to do more researches.
出处
《阴山学刊（自然科学版）》
2007年第4期66-71,共6页
Yinshan Academic Journal(Natural Science Edition)
关键词
硝态氮
硝酸还原酶
淋失
积累
Nitrate
Nitrate Reductases (NR)
leaching out
accumulation
