江苏省化肥施用强度时空演变及差异分析  

Spatio-temporal Evolution and Difference Analysis of Chemical Fertilizer Intensity in Jiangsu Province

作　　者：宋知远 孙晓玲[1] 许雅婷 周子阳 胡乃娟 SONG Zhi-yuan 1,2 , SUN Xiao-ling 1,XU Ya-ting 1 et al(1. College of Humanities and Social Development, Nanjing Agricultural University, Nanjing,Jiangsu 210095;2. Institute of Regional Agricultural Research, Nanjing Agricultural University, Nanjing,Jiangsu 21009)

机构地区：[1]南京农业大学人文与社会发展学院,江苏南京210095 [2]南京农业大学区域农业研究院,江苏南京210095 [3]南京农业大学公共管理博士后流动站,江苏南京210095

出　　处：《安徽农业科学》2018年第18期5-8,共4页Journal of Anhui Agricultural Sciences

基　　金：国家级大学生创新创业训练计划项目(201710307079)

摘　　要：[目的]研究江苏省化肥施用规律并为化肥减量提出建议。[方法]以江苏省2000—2016年化肥施用量及农作物播种面积为原始数据,计算得到该时期江苏省化肥施用强度,并在此基础上计算化肥施用的变异系数及泰尔指数以研究其时空变化。[结果]江苏省化肥施用强度经历了受城镇化影响上升后受农业结构及相关政策影响下降的过程,在2007年达到最大值,为463.40 kg/hm^2;变异系数与泰尔指数变化趋势基本相同,2000—2014年逐年上升,近年有下降趋势,表明江苏省化肥施用强度区域差异经历了一个先上升后下降的过程;江苏省化肥施用强度受自然条件、社会经济发展及农业发展水平影响在空间上呈"北高南低"的特征;随着时间延长,大多数城市的化肥施用强度逐渐下降。[结论]从发展节肥技术、加快推进农业现代化、加强政府引导3方面提出化肥减量的建议。[Objective]To study the application rule of chemical fertilizer in Jiangsu Province and make suggestions for the reduction of chemical fertilizer. [Method]The application intensity of chemical fertilizer in Jiangsu Province was calculated in this study by using the amount of chemical fertilizer and the sown area of the crops in Jiangsu Province from 2000 to 2016 as the original data. On this basis, the variation coefficient and their index were calculated to study the temporal and spatial changes. [Result] The intensity of chemical fertilizer application in Jiangsu had gone through the process of declining influenced by the change of agricultural structure and related policies after the rise because of urbanization. It reached the maximum value of 463.40 kg/hm 2 in 2007;the trend of variation coefficient was the same as that of theil index. It increased year by year from 2000 to 2014. It had a decreasing trend in recent years. It showed that the regional difference of fertilizer application intensity in Jiangsu had experienced a process of first rising and then decreasing; the application intensity of fertilizer in Jiangsu showed the characteristics of “high in the North and low in South” in space because of natural conditions, social economic development and agricultural development level. The intensity of fertilizer application in most cities was decreasing with time. [Conclusion]This paper puts forward specific suggestions from three aspects： developing the technology of fertilizer saving, speeding up the modernization of agriculture and strengthening the guidance of the government.

关 键 词：化肥施用量 化肥施用强度 时空演变 江苏省 

分 类 号：S143[农业科学—肥料学]