Influence Factors of Grain Yield in the Loess Plateau of Gansu Province During the Latest 20 Years and Analysis on its Future Grain Requirement
FANG Yan-jie, ZHANG Xu-cheng*, HOU Hui-zhi, YU Xian-feng, WANG Hong-li, MA Yi-fa
. 2015, (4): 165 -175 .  DOI: 10.13304/j.nykjdb.2015.180

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