Research Article
Urea Application Rate for Crop Straw Decomposition in Temperate China
Table 6
Enquiry table for the urea application quantity of early rice straw returning to the field with different yields per unit area.
| Yield per unit area of early rice | Urea dosages of different C : N adjustment targets | 25 : 1 | 30 : 1 | 35 : 1 |
| 3750 | 62.40 | 45.75 | 33.90 | 4125 | 68.70 | 50.40 | 37.35 | 4500 | 74.85 | 55.05 | 40.80 | 4875 | 81.15 | 59.55 | 44.10 | 5250 | 87.45 | 64.20 | 47.55 | 5625 | 93.60 | 68.70 | 51.00 | 6000 | 97.35 | 71.55 | 52.95 | 6375 | 106.05 | 77.85 | 57.75 | 6750 | 112.35 | 82.50 | 61.20 | 7125 | 118.65 | 87.00 | 64.50 | 7500 | 124.80 | 91.65 | 67.95 | 7875 | 131.10 | 96.30 | 71.40 | 8250 | 137.25 | 100.80 | 74.70 |
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Unit: kg/ha.
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