土地细碎化、耕地地力对粮食生产效率的影响——基于江汉平原354个水稻种植户的研究
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王嫚嫚, 刘颖, 蒯昊, 周晓时
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The effects of land fragmentation and land quality on the technical efficiency of grain production based on 354 rice planters on the Jianghan Plain
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Manman WANG, Ying LIU, Hao KUAI, Xiaoshi ZHOU
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表3 模型极大似然估计结果 |
Table 3 The maximum likelihood estimation results of the model |
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变量 | 模型1 | 模型2 | 模型3 | 模型4 | production function | | | | | x1 | -0.017 7* | -0.017 8* | -0.019 2** | -0.019 8** | (-1.86) | (-1.89) | (-2.00) | (-2.19) | x2 | 0.051 0* | 0.059 8** | 0.058 8* | 0.068 4** | (1.75) | (2.04) | (1.86) | (2.33) | x3 | -0.031 1*** | -0.031 4*** | -0.031 2*** | -0.031 6*** | (-3.20) | (-3.27) | (-3.23) | (-3.30) | x4 | -0.020 8 | -0.021 4 | -0.022 6 | -0.022 5 | (-1.05) | (-1.13) | (-1.17) | (-1.18) | x5 | -0.055 6** | -0.058 0** | -0.054 1** | -0.055 3** | (-2.43) | (-2.58) | (-2.38) | (-2.44) | x6 | 0.058 0* | 0.056 9** | 0.053 7* | 0.053 0* | (1.86) | (2.09) | (1.85) | (1.95) | SI | - | -0.034 0 | - | -0.035 9 | - | (-1.54) | - | (-1.62) | LQ | - | - | -0.019 2** | -0.019 1** | - | - | (-2.13) | (-2.16) | _cons | 10.097 3*** | 10.061 1*** | 10.109 6*** | 10.060 0*** | (27.83) | (28.09) | (28.20) | (27.91) | technical inefficiency | | | | | z1 | 0.001 9* | 0.002 0** | 0.001 8* | 0.001 8* | (1.90) | (2.48) | (1.83) | (1.76) | z2 | 0.007 0 | 0.010 1 | 0.005 1 | 0.008 3 | (0.61) | (0.98) | (0.44) | (0.72) | LQ | 0.024 1* | 0.022 5* | - | - | (1.70) | (1.95) | - | - | SI | 0.038 1 | - | 0.038 1 | - | (0.70) | - | (0.93) | - | z3 | 0.129 2*** | 0.135 6*** | 0.142 8*** | 0.152 2*** | | (3.81) | (4.29) | (3.72) | (4.54) | z4 | -0.019 9*** | -0.019 1*** | -0.020 2*** | -0.019 9*** | (-5.46) | (-10.24) | (-8.84) | (-9.95) | _cons1 | 0.597 0*** | 0.551 6*** | 0.653 2*** | 0.628 6*** | (3.69) | (5.70) | (4.89) | (5.34) | model diagnostics | σ2 | 0.070 3*** | 0.070 1** | 0.082 3 | 0.082 4* | (-3.35) | (-2.85) | (-1.40) | (-1.66) | γ | 0.853 0** | 0.850 5* | 0.874 3 | 0.872 8 | (1.98) | (1.67) | (1.00) | (1.17) | H0:No inefficiency component(Probz): | 0.002 | 0.004 | 0.002 | 0.004 |
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