麦玉两熟高产农田生态系统氮素的合理调控──以山东省桓台县冬小麦套种夏玉米系统为例
张新明, 吴文良, 李季, 赵桂慎
Rational N regulation in wheat/corn high-yield farm ecosystem—Taking winter wheat-summer corn system in Hengtai county of Shandong Province as an example
Zhang Xinming
应用生态学报
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1999, (3): 297
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