作物种植专业化与化肥减量来源——兼顾经营规模的影响
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曾琳琳, 李晓云, 杨志海
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Crop specialization and chemical fertilizer reduction: The pathway of operation scale
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ZENG Lin-lin, LI Xiao-yun, YANG Zhi-hai
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表6 横向专业化与经营规模对化肥减量的影响
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Table 6 The impact of horizontal crop specialization and operation scale on fertilizer reduction
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| 变量 | （1）经营规模 | （2）化肥 | （3）氮肥 | （4）磷肥 | （5）复合肥 | | 施用强度的影响 | | | | | | | 横向专业化 | 0.009***
(0.002) | -0.012***
(0.002) | -0.011***
(0.002) | -0.003
(0.006) | -0.010***
(0.002) | | 经营规模 | — | -0.265***
(0.092) | -0.362***
(0.092) | -0.056
(0.234) | -0.424***
(0.132) | | 常数项 | 0.552***
(0.076) | 2.278***
(0.091) | 2.011***
(0.095) | 0.682***
(0.258) | 1.557***
(0.160) | | 观测值/个 | 338 | 338 | 338 | 338 | 338 | | R2 | 0.984 | 0.937 | 0.925 | 0.736 | 0.938 | | 利用效率的影响 | | | | | | | 横向专业化 | — | 0.014***
(0.003) | 0.014***
(0.004) | 0.002
(0.008) | 0.026***
(0.004) | | 经营规模 | — | 0.909***
(0.144) | 1.039***
(0.165) | 0.586*
(0.330) | 1.256***
(0.200) | | 常数项 | — | 1.985***
(0.165) | 2.262***
(0.210) | 4.377***
(0.451) | 2.515***
(0.186) | | 观测值/个 | — | 338 | 338 | 338 | 338 | | R2 | — | 0.767 | 0.782 | 0.677 | 0.871 |
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