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Study on the optimum nitrogen application rate of soybean intercropping with double-plant maize in one hole in Hetao irrigation area
MIAO Sanming, DANG Jiuzhan, ZHAO Xiaoyu, FAN Xiurong, SUN Xiangchun, WANG Xuejiao, LI Qiang, ZHANG Yan, ZHANG Yujin
Journal of Northern Agriculture . 2021, (2): 31 -35 .  DOI: 10.12190/j.issn.2096-1197.2021.02.05

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