限制开发区政策调整对农民增产增收的影响研究
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王良健, 刘贞, 张薇, 李晗, 刘炎
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The influence of the policy adjustment on the increase of grain production and farmers' income in restricted development zones
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WANG Liangjian, LIU Zhen, ZHANG Wei, LI Han, LIU Yan
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表4 稳健性检验
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Tab. 4 Robustness test
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| 变量 | 变量替换Y1 | 反事实检验Y1 | 反事实检验Y2 | | du×dt | 0.0382***
(0.004) | 0.0089
(0.414) | -0.0215
(0.679) | | X1 | -0.8442***
(0.000) | 0.1608**
(0.046) | | | X2 | 0.0444**
(0.011) | 0.0411**
(0.012) | | | X3 | 0.0009
(0.955) | -0.0011
(0.948) | | | X4 | 0.2545***
(0.000) | 0.2420***
(0.000) | | | X5 | | | 1.5317**
(0.019) | | X6 | | | 0.0821
(0.143) | | X7 | | | 1.4526*
(0.087) | | X8 | | | 0.2197**
(0.020) | | X9 | | | 0.2227**
(0.024) | | 个体固定效应(φi) | 控制 | 控制 | 控制 | | 时间固定效应(ηt) | 控制 | 控制 | 控制 | | R-squared | 0.8393 | 0.7974 | 0.8303 |
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