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

Unit: kg/ha.