This paper was aimed to clarify the coupling relationships between fertilizer application and rice yield,which could provide scientific references and suggestions for the development of green agriculture and food security in Yunnan Province.Based on the panel data,the regional differences and elasticity coefficients of fertilizer application and rice yield in 16 cities of Yunnan Province were calculated from 2015 to 2020,and the dynamic characteristics of their spatiotemporal coupling relationships were analyzed.It was found that 13 cities were"double reduction areas",and 3 cities were"other factor affected areas".Overall,Yunnan province was experiencing a simultaneous decrease in fertilizer application and rice yield,resulting in a significant pressure on rice yield growth.
维普
万方数据