华北地区几种冬闲覆盖作物碳氮蓄积及其对土壤理化性质的影响
赵秋, 高贤彪, 宁晓光, 曹卫东
Carbon-nitrogen fixation and effects on the physical and chemical properties in winter cover crop in north China
ZHAO Qiu, GAO Xianbiao, NING Xiaoguang, CAO Weidong
生态环境学报
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2011, (4): 750
-753
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DOI: 10.16258/j.cnki.1674-5906(2011)04-0750-04
