W YU, X SONG, W XIU, G ZHANG… - Acta Prataculturae …, 2014 - cyxb.magtech.com.cn
In grassland sites dominated by Stipa baicalensis grassland, we imposed six nitrogen
levels: N 0, N 15, N 30, N 50, N 100 and N 150, respectively. At the various levels of nitrogen …