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8 纵向专业化与农地经营规模的交互对化肥减量的影响
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Table 8 The interaction impact of vertical specialization and operation scale on fertilizer reduction
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| 变量 | （1）化肥 | （2）氮肥 | （3）磷肥 | （4）复合肥 | | 施用强度的影响 | | | | | | 纵向专业化 | -0.005
(0.004) | -0.009*
(0.005) | -0.005
(0.303) | -0.465
(0.422) | | 经营规模（对数） | -0.209*
(0.110) | -0.214**
(0.105) | -0.130
(1.391) | -1.802
(1.950) | | 纵向专业化×经营规模 | -0.008
(0.019) | -0.037*
(0.021) | -0.046*
(0.026) | -0.014
(0.039) | | 常数项 | 2.183***
(0.105) | 1.935***
(0.122) | -0.032
(1.707) | 0.012
(2.783) | | 观测值/个 | 338 | 338 | 338 | 338 | | R2 | 0.904 | 0.882 | 0.617 | 0.652 | | 利用效率的影响 | | | | | | 纵向专业化 | 0.121*
(0.064) | 0.195***
(0.072) | 0.226**
(0.103) | 0.029**
(0.015) | | 经营规模（对数） | 0.617**
(0.262) | 0.713**
(0.296) | 0.081
(0.405) | 0.539*
(0.298) | | 纵向专业化×经营规模 | 0.106**
(0.047) | 0.114**
(0.054) | 0.121
(0.093) | 0.017*
(0.008) | | 常数项 | 2.685***
(0.305) | 2.944***
(0.348) | 4.793***
(0.454) | 4.294***
(0.318) | | 观测值/个 | 338 | 338 | 338 | 338 | | R2 | 0.777 | 0.801 | 0.700 | 0.883 |
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