Effects of long-term cotton monocropping on soil biological characteristics and enzyme activities in Northern Xinjiang
LIU Yu, LIANG Yongchao, CHU Guixin, YE Jun, LIU Tao, ZHENG Xurong
Ecology and Environmental Sciences . 2010, (7): 1586 -1592 .  DOI: 10.16258/j.cnki.1674-5906(2010)07-1586-07

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