Effects of Stubble Management on Soil Fertility and Crop Yield of Rainfed Area in Western Loess Plateau, China

Table 5

Nitrogen balance under different treatments over 4 years (kg N ha⁻¹).

Rotation	Item	T	NT	TS	NTS	Significant
P/W	Input	269.00	269.00	299.37	299.37	—
	Fixation	4.65	27.12	20.73	26.06	***
	Output	183.45	167.18	139.73	159.25	**
	Balance	90.20	128.94	180.37	166.18	***
W/P	Input	269.00	269.00	299.37	299.37	—
	Fixation	3.42	25.63	16.90	24.89	***
	Output	144.82	130.34	102.51	139.09	**
	Balance	127.60	164.29	213.76	185.17	***

Significant level (^∗𝑃<0.05; ^∗∗𝑃<0.01; ^∗∗∗𝑃<0.001).