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4 门槛参数(灌溉水平) |
Fig.4 Threshold parameters (irrigation level) |