施用有机物料对沙化土壤碳氮含量、酶活性及紫花苜蓿生物量的影响
屈皖华1, 李志刚2,3, 李健1

Effects of fertilizing organic materials on contents of carbon and nitrogen, enzyme activity of desertified soils and alfalfa biomass
Qu Wan-hua1, Li Zhi-gang2,3, Li Jian1
不同处理下土壤的酶活性