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Corn Fertilizer Recommendation System Based on Abundance-deficiency Index of Soil N in Four Great Natural Regions and Whole China
Sun Hongren, Zhang Jiping, Gang Lihua, Lv Yucai, Wang Yinghai
Chinese Agricultural Science Bulletin . 2020, (14): 80 -87 .  DOI: 10.11924/j.issn.1000-6850.casb19010034