Corn fertilizer recommendation system based on the abundance-deficiency index of soil available K in five great natural regions of China
SUN Hongren;ZHANG Jiping;GANG Lihua;LU Yucai;WANG Yinghai(College of Grassland Science and Technology,China Agricultural University,Beijing 100193,China;Beijing Liukai Agriculture Sci.& Tech Co.,Ltd.,Beijing 100095,China;Beijing Potato Net Agriculture Science Academy,Beijing 100043,China;Beijing Cofine Sci.& Tech Co.,Ltd.,Beijing 100095,China;Beijing Insentek Technology Co.,Ltd.,Beijing 100086,China)
Journal of Northern Agriculture
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2019, (2): 36
-45
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DOI: 10.3969/j.issn.2096-1197.2019.02.07
