Table 2.
Effect of treatmentsabc on economic benefits (Yuan ha−1) of maize grown in 2015 and 2016.
| Year | Treatments | Total input (Yuan ha−1) | Total output (Yuan ha−1) | Net Profit (Yuan ha−1) | output/input | Increase over CK (%) |
|---|---|---|---|---|---|---|
| 2015 | LI0 | 7700 | 19084 | 11384 | 2.48 | 5 |
| LIB | 8263 | 21098 | 12836 | 2.55 | 16 | |
| LIF | 8263 | 21787 | 13525 | 2.64 | 20 | |
| LIBF | 8825 | 22013 | 13188 | 2.49 | 18 | |
| CKL | 8600 | 19416 | 10816 | 2.26 | — | |
| MI0 | 7955 | 20974 | 13019 | 2.64 | 10 | |
| MIB | 8518 | 22504 | 13986 | 2.64 | 16 | |
| MIF | 8518 | 23796 | 15278 | 2.79 | 23 | |
| MIBF | 9080 | 24121 | 15041 | 2.66 | 22 | |
| CKM | 8855 | 20579 | 11724 | 2.32 | — | |
| HI0 | 8210 | 22224 | 14014 | 2.71 | 11 | |
| HIB | 8773 | 23904 | 15132 | 2.72 | 18 | |
| HIF | 8773 | 23960 | 15187 | 2.73 | 18 | |
| HIBF | 9335 | 24280 | 14945 | 2.60 | 17 | |
| CKH | 9110 | 21546 | 12436 | 2.37 | — | |
| 2016 | LI0 | 7700 | 16886 | 9186 | 2.19 | 13 |
| LIB | 8263 | 20289 | 12026 | 2.46 | 33 | |
| LIF | 8263 | 20611 | 12349 | 2.49 | 35 | |
| LIBF | 8825 | 21030 | 12205 | 2.38 | 34 | |
| CKL | 8600 | 16601 | 8001 | 1.93 | — | |
| MI0 | 7955 | 17754 | 9799 | 2.23 | 16 | |
| MIB | 8518 | 20965 | 12448 | 2.46 | 34 | |
| MIF | 8518 | 23418 | 14901 | 2.75 | 45 | |
| MIBF | 9080 | 23746 | 14666 | 2.62 | 44 | |
| CKM | 8855 | 17093 | 8238 | 1.93 | — | |
| HI0 | 8210 | 17821 | 9611 | 2.17 | 16 | |
| HIB | 8773 | 21895 | 13122 | 2.50 | 38 | |
| HIF | 8773 | 23208 | 14436 | 2.65 | 44 | |
| HIBF | 9335 | 23857 | 14522 | 2.56 | 44 | |
| CKH | 9110 | 17215 | 8105 | 1.89 | — |
aL: low plant density (52500 plant ha−1); M: medium plant density (75000 plant ha−1); H: high plant density (97500 plant ha−1); bI0: plastic film ridges with no irrigation; IB: plastic film ridges and irrigation (375 m3 ha−1) at the bell stage; IF: plastic film ridges and irrigation (375 m3 ha−1) at the flowering stage; IBF: plastic film ridges and irrigation (750 m3 ha−1) at the bell and flowering stages; cCKL: traditional flat planting with plastic film mulching, low plant density (52500 plant ha−1), and no irrigation; CKM: traditional flat planting with plastic film mulching, medium plant density (75000 plant ha−1), and no irrigation; CKH: traditional flat planting with plastic film mulching, high plant density (97500 plant ha−1), and no irrigation; Market Price (Yuan): Maize grain, 1.64 Yuan kg−1; biomass, 0.1 Yuan kg−1; total input cost = labor + plastic film + machine cultivation + seed for sowing + fertilizers + irrigation water; irrigation water, 1.5 Yuan m−3.