Table 1 Descriptive statistics of the main variables.
Variables | Abbreviation | Unit | N | Mean | S.D. | Min | Max |
|---|---|---|---|---|---|---|---|
Fertilizer use efficiency | FUE | — | 300 | 0.609 | 0.195 | 0.078 | 0.896 |
Regional human capital | EDU | Years | 300 | 9.616 | 1.143 | 6.971 | 13.532 |
Urbanization rate | UR | % | 300 | 0.547 | 0.132 | 0.291 | 0.896 |
Financial support for agriculture | AF | 100 million yuan | 300 | 39.051 | 22.897 | 3.854 | 102.313 |
Economic level | EL | 10,000 yuan | 300 | 9.335 | 4.590 | 2.724 | 27.825 |
Fertilizer price | FP | — | 300 | 1.033 | 0.112 | 0.810 | 1.458 |
Agricultural planting structure | AS | % | 300 | 0.654 | 0.130 | 0.353 | 0.958 |
Total agricultural output | Output | 100 million yuan | 300 | 232.800 | 168.700 | 14.500 | 804.300 |
Machinery input | Input1 | 10,000 kilowatts | 300 | 3257.000 | 2923.000 | 95.300 | 13353.000 |
Fertilizer input | Input2 | 10,000 tons | 300 | 191.600 | 146.100 | 8.000 | 716.100 |
Labor input | Input3 | 10,000 persons | 300 | 939.500 | 666.600 | 37.090 | 2847.000 |
Land input | Input4 | 1000 km2 | 300 | 5687.000 | 3808.000 | 123.900 | 15205.000 |
Pesticide input | Input5 | 10,000 tons | 300 | 5.836 | 4.386 | 0.180 | 17.350 |
Agricultural film input | Input6 | 10,000 tons | 300 | 7.911 | 6.623 | 0.107 | 32.300 |
Diesel fuel input | Input7 | 10,000 tons | 300 | 69.110 | 61.530 | 2.200 | 329.900 |
