| 变量 | 模型(1) | 模型(2) | 模型(3) | 
| fin | 0.368*** | 0.198** | 0.264** | 
| (−3.43) | (−3.07) | (−2.53) | |
| land | 1.314 | 0.856 | 34.365** | 
| (−0.68) | (−0.54) | (−2.3) | |
| human | −18.338*** | 0.914 | 2.987 | 
| (−2.95) | (−0.11) | (−1.5) | |
| capital | 0.773*** | 0.370** | 0.067 | 
| (−5.78) | (−3.06) | (−0.8) | |
| govn | 0.12 | −0.530*** | −0.07 | 
| (−0.89) | (-6.81) | (−1.12) | |
| fdi | −0.039 | −0.159 | −0.074 | 
| (−0.56) | (−1.80) | (−0.75) | |
| tech | 
 | 
 | 0.131 | 
| (−0.89) | |||
| c | 13.326** | 8.622 | −3.007 | 
| (−2.66) | (−1.44) | (−1.15) |