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Effect of lucerne-crop rotations on soil physical properties in the semiarid Loess Plateau of Central Gansu
SONG Li-Ping, LUO Zhu-Zhu, LI Ling-Ling, CAI Li-Qun, ZHANG Ren-Zhi, NIU Yi-Ning
Acta Prataculturae Sinica . 2015, (7): 12 -20 .  DOI: 10.11686/cyxb2015009