我国农用化肥施用强度的时空差异与区域收敛

The spatial and temporal disparities and regional convergence of agricultural fertilizer use intensity in China

化肥是粮食的"粮食"。文中采用锡尔分解的方法考察了2004-2013年不同地区化肥施用强度的区域差异特征及其变化规律,并进一步分析其收敛性。研究结果表明:我国化肥施用强度的区域总差异减少,粮食功能区区域间差异是导致全国层面化肥施用强度存在差异的主要原因,而主产区差异又是造成区域内差异的主要原因;化肥总体上存在σ收敛和β收敛,不同化肥品种的收敛性和收敛速度存在一定差异。

Fertilizer is the food of ＂food＂. The article adopted the method of Theil index to examine the characteristics of the regional difference and further analyzed its convergence during 2004 -2013. The results show that the overall regional inequality tended to decrease from 2004 to 2013, and the dominant source of regional inequality at an three -region（ main producing areas, balance areas and sales area） level was between -region dis-parities. Of the three regions, the most significant within -region disparity was in main grain producing areas. The fertilizer has both convergence and convergence, but different fertilizers exist certain differences in convergenee.