Table 5 Effects of straw return methods and potassium fertilization levels on the profit of maize planting.
Treatment | Expenditure (yuan/ha) | Total expenditure (yuan/ha) | Yield (kg/ha) | Gross income (yuan/ha) | Net profit (yuan/ha) | ||
|---|---|---|---|---|---|---|---|
Straw returning | Potash fertilizer | Other | |||||
CK | 0 | 0 | 1700 | 1700 | 11,773.95 | 11,773.95 | 10,073.95 |
SFK0 | 750 | 0 | 1700 | 2450 | 12,945.21 | 12,945.21 | 10,495.21 |
SFK30 | 750 | 120 | 1700 | 2570 | 13,693.02 | 13,693.02 | 11,123.02 |
SFK45 | 750 | 180 | 1700 | 2630 | 14,718.77 | 14,718.77 | 12,088.77 |
SFK60 | 750 | 240 | 1700 | 2690 | 14,744.39 | 14,744.39 | 12,054.39 |
FGK0 | 450 | 0 | 1700 | 2150 | 12,537.53 | 12,537.53 | 10,387.53 |
FGK30 | 450 | 120 | 1700 | 2270 | 13,379.29 | 13,379.29 | 11,109.29 |
FGK45 | 450 | 180 | 1700 | 2330 | 13,991.39 | 13,991.39 | 11,661.39 |
FGK60 | 450 | 240 | 1700 | 2390 | 14,292.64 | 14,292.64 | 11,902.64 |
