Analysis of Fertilization Compounding Rate and Compound Fertilizer Consumption Status and Change (Part Ⅱ)
JIA Ke;SHEN Bing;QU Yandi;WANG Xiaoliang;LI Hui;College of Resources and Environmental Sciences, Hebei Agricultural University;Sino-Arab Chemical Fertilizer Co., Ltd.;China BlueChemical Ltd.;
Through two periods spanning 10 years, the basic situation of fertilization of 70 crops and 3 602 farmers in 22 provinces, municipalities, and autonomous regions in China has been investigated, and the statistical data have been summarized in order to grasp the level of fertilization compounding rate and status and change law of nutrient input of farmers in customary fertilization in China, and then clarify the future development trend of the compound fertilizer industry, so as to provide theoretical support for fertilization recommendation and the formulation of macro policies. The research results show that the average compounding rates of N,P_2O_5 and K_2O applied to spring corn, summer corn, wheat, vegetables, and fruit trees in China are 69.5%, 92.1% and 84.4%, respectively; according to the farmers′ fertilization habits, the average input ratio of N, P_2O_5 and K_2O nutrients for food crops such as corn, wheat, and rice is 1.00∶0.37∶0.30. The average input ratio of N, P_2O_5 and K_2O nutrients for economic crops including vegetables and fruit trees is 1.00∶0.78∶1.06; from 1997 to 2016, the application amount of ternary compound fertilizer in China increased from 7 981 kt in 1997 to 22 071 kt in 2016, with an average annual increase of 704.5 kt. But in recent years, the annual growth rate of compound fertilizer application has shown a downward trend, from 8.5% in 2007 to 1.4% in 2016.