稀土元素浸种能够促进小麦(Triticum aestivum L.)幼苗对NO_3~-的吸收,提高硝酸还原酶活力。这些效应与稀土浓度有关,低浓度有促进作用,高浓度则有抑制作用。稀土元素处理还能促进小麦幼苗体内NO_3~-的同化还原,使硝态氮含量降低,氨基氮含量增加,促进了氮素代谢过程。 Rare earth elements soaking can promote the absorption of NO_3 - in wheat seedlings (Triticum aestivum L.) and improve the activity of nitrate reductase. These effects and the concentration of rare earth, low concentrations have a promoting effect, high concentrations have inhibitory effect. Rare earth elements treatment can also promote the NO_3 ~ - assimilation reduction in wheat seedling so as to reduce the content of nitrate nitrogen and increase the content of amino nitrogen, which promotes the nitrogen metabolism process.