干旱灾害对农业技术效率的影响
陈钦萍, 刘振滨, 杨建州

The impact of drought disaster on agricultural technical efficiency: threshold effect based on irrigation level
Qinping Chen, Zhengbin Liu, Jianzhou Yang
图2 2006—2020年干旱灾害的空间分布
Fig.2 The spatial distribution of provincial drought disasters from 2006 to 2020