Specific Index System of Ecological Balanced Fertilization for Maize

作者：Keyu LIN,Hongyan ZHENG,Zhiping HUANG,Jian DING,Changhong MI,Shutian LIU,Xianda HOU,Shuojin WANG,Ling LU,Yanlin HOU

摘要：This paper studied the index system of ecological balanced fertilization for maize by data mining method based on data of"3414 fertilizer field trials"of maize by published papers from national soil testing and recommendation since 2005.The results and conclusions were as follows.①Soil nutrient content could not be used as indicator of fertilizer application of maize.②The conceptual model of N conversion rate of maize for plot was Y N≈a+b×optimum production-c×optimum fertilizer amount of N-d×optimum phosphorus application amount-e×optimum potassium application amount-f×temperature in growth season-g×rainfall in growth season.The conceptual model of P conversion rate of maize for plot was Y P≈a+b×optimum phosphorus application amount-c×optimum nitrogen application amount-d×optimum potassium application amount.The conceptual model of K conversion rate of maize for plot was Y K≈a+b×optimum yield-c×optimum nitrogen application amount-d×optimum phosphorus application amount-e×optimum potassium application amount-f×temperature in growth season-g×rainfall in growth season.③The conceptual model of the optimum fertilizer amount of N of maize for plot was Y N≈a+b×optimum phosphorus application amount+c×optimum potassium application amount+d×temperature in growing season+e×rainfall in growing season,and the conceptual model of the optimum fertilizer amount of P was Y P≈a+b×optimum nitrogen application amount,and the conceptual model of the optimum fertilizer amount of K was Y K≈a+b×optimum nitrogen application amount+c×temperature in growth season+d×rainfall in growth season-e×optimum yield.④The conceptual model of relative abundance-deficiency value of soil N of maize for plot was that Y N≈a,and the conceptual model of relative abundance-deficiency value of soil P was Y P≈a,and the conceptual model of relative abundance-deficiency value of soil K was Y K≈a+b×optimum nitrogen application amount+c×optimum phosphorus application amount.

发文机构：Guangxi Geographical Indication Crops Research Center of Big Data Mining and Experimental Engineering Technology Guangxi Key Laboratory of Earth Surface Processes and Intelligent Simulation Key Laboratory of Environment Change and Resources Use in Beibu Gulf（Nanning Normal University） Agro-Environmental Protection Institute

关键词：OptimumyieldOptimumfertilizationamountNutrientconversionrateFertilizerutilizationratioRelativeabundance-deficiencyvalueofsoilnutrient

分类号： S51[农业科学—作物学]