氮肥对不同退化程度草场羊草光合速率的影响
王明铭;鲍雅静;李政海;杨绍欢;焦静平;郭燕宇
【期刊名称】《安徽农业科学》 【年(卷),期】2012(040)028
【摘要】[ Objective] This study aimed to investigate the effect of nitrogen fertilizer on photosynthetic rate of Leymus chinensis in the grasslands of,different degrading degrees. [Method] With the L chinensis in Inner Mongolia Baiyinxile Range as the research object, different rations of nitrogen fertilizer were applied to the grassland (0, 30, 50, 80 g/m ). The effect of different gradients of nitrogen fertilizer on photo-synthetic rate of Leymus chinensis, and the effect on grasslands of different degrading degrees were analyzed. [ Result ] The photosynthetic rate of L. chinensis increased with the increase of nitrogen gradients; in the grassland communities with different degrading degrees, the responses of the photosynthetic rate of L. chinensis to nitrogen fertilizer were different, and the response in the grassland with severe degradation was the best. [Conclusion] Nitrogen fertilizer played an important role in enhancing the restoration degree of grassland.%[目的]研究氮肥对不同退化程度草场羊草光合速率的影响.[方法]以内蒙古白音锡勒牧场羊草为研究对象,通过对草地进行不同的氮肥处理(0、30、50、80g/m2),分析在不同氮肥梯度下羊草光合速率所受的影响,以及氮肥对不同退化程度草场的影响.[结果]随氮肥梯度的增加,羊草光合速率随之增加；不同
氮肥对不同退化程度草场羊草光合速率的影响
