秸秆还田对连作棉田土壤酶活性的影响
张伟, 龚久平, 刘建国
Effect of returning cotton stalk to long-term continuous cropping filed on soil enzyme activities
ZHANG Wei, GONG JiuPing, LIU JianGuo
生态环境学报 . 2011, (5): 881 -885 .  DOI: 10.16258/j.cnki.1674-5906(2011)05-0881-05