Urea Application Rate for Crop Straw Decomposition in Temperate China

Table 1

Ratio of straw to grain.

Types of straw	Ratio of straw to grain	Types of straw	Ratio of straw to grain
(1) Rice	0.95	(11) Sesame	2.80
Early rice	0.68	(12) Flax	2.00
Middle-late rice	1.00	(13) Sunflower	2.80
(2) Wheat	1.30	(14) Cotton	5.00
(3) Corn	1.10	(15) Jute and kenaf	1.90
(4) Millet	1.40	(16) Ramie	6.50
(5) Sorghum	1.60	(17) Jute	3.00
(6) Soybean	1.60	(18) Flax	1.10
(7) Potato	0.96	(19) Sugarcane	0.10
(8) Sweet potato	0.63	(20) Sugar beet	0.10
(9) Peanut	1.50	(21) Tobacco	1.60
(10) Rape	2.70	(22) Melon and vegetables	0.10

Data source: Bi [22].