干湿交替作用下不同植物对氮素迁移转化的影响

Effects of Different Plants on Nitrogen Migration and Transformation under the Dry and Wet Cycle

以北方常见的护坡植被苜蓿草、无芒雀麦、沙打旺和千屈草为研究对象,探究在干湿交替作用后水体中氮素的含量变化,分析不同植物对水体的自净效率。研究发现,千屈草对氮素有很好的去除效果。本研究对于植物在干湿交替作用下水体中的氮素吸收利用率的分析有一定的意义,对氮素迁移转化和植物净化富营养水体有一定的参考价值。

Based on the common sloping vegetation in the north,including Medicago Sativa Linn,Bromus inermis Leyss,Astragalus adsurgens Pall and Lythrum salicaria L,the changes of nitrogen content in the water after alternating drying and wetting cycle were investigated,and the self-purification of different plants to the water was analyzed.It was found that Lythrum salicaria L has an effective removal effect on nitrogen.This study has a certain significance for the analysis of nitrogen uptake and utilization in plants under the action of dry and wet cycle.It has certain reference value for nitrogen migration and transformation and plant purification of eutrophic water.