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Study on Abundant or Lack Index of Nitrogen, Phosphorus and Potassium and Optimum Economic Fertilizing of Winter Wheat in Western Guanzhong District
马志超 张明学 周仓军 王录科 王银福 翟丙年
Chinese Agricultural Science Bulletin . 2014, (24): 210 -216 .  DOI: 10.11924/j.issn.1000-6850.2014-1437