【摘要】 利用脉冲辐解方法，研究了阿魏酸、芥子酸（ＨＣＡ）快速清除ＮＯ·２的机理，测得ＮＯ·２从ＨＣＡ抽氢反应的动力学常数为（７２—７４）×１０８ｄｍ３·ｍｏｌ－１·ｓ－１量级，并发现在弱酸性条件下ＨＣＡ也能有效清除ＨＮＯ２．更多还原

【Abstract】 Influences of selenite and funlvic acid (FA) on the sugar metabolism in wheat seedling were studied by greenhouse hydroponical experiment. The results showed that selenite can stimulate the sugar metabolism in wheat seedling in the early stage of growth and the process was inhibited by the existence of soil FA. At later stage, selenite turns to inhibit the sugar metabolism and FA plays an role of detoxication, so as to maintain the higher level of sugar metabolism. Since there is a significant correlation between the content of soluble saccharides and activity of α amylase, the influence of the interaction between selenite and FA on plant growth could be due to the action on the related enzymatic processes.更多还原