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

Table 3

Soil total nutrients as affected by stubble management in different rotation sequence (g kg⁻¹).

Depth (cm)	Treatment	Field pea-spring wheat (P/W)				Spring wheat-field pea (W/P)
		Organic matter	Total N	Total P	Total K	Organic matter	Total N	Total P	Total K
0–5	T	13.90±0.64	1.00±0.05	0.85±0.03	15.08±0.64	13.30±0.52	1.00±0.04	0.90±0.07	15.58±0.76
	NT	14.01±0.79	1.05±0.02	0.90±0.15	14.61±0.34	13.78±1.17	1.04±0.03	0.96±0.04	14.48±0.34
	TS	15.26±0.43	1.09±0.03	1.06±0.12	16.31±0.92	14.56±0.62	1.09±0.04	1.07±0.02	16.36±0.33
	NTS	15.66±1.12	1.13±0.02	1.08±0.04	16.77±0.35	16.81±1.50	1.21±0.11	1.09±0.03	16.92±0.14
	Significant	**	*	*	*	***	*	**	**
5–10	T	13.83±0.68	0.99±0.04	0.80±0.02	15.08±0.60	13.14±0.32	0.99±0.03	0.85±0.06	14.47±0.71
	NT	14.00±0.58	1.04±0.04	0.82±0.02	14.13±0.22	13.70±0.87	1.01±0.02	0.95±0.14	13.98±0.61
	TS	15.11±0.38	1.04±0.04	1.00±0.09	15.47±1.73	14.24±0.84	1.01±0.01	0.99±0.02	15.67±0.26
	NTS	14.78±0.17	1.07±0.01	1.02±0.13	16.17±0.33	14.94±0.62	1.12±0.09	1.03±0.08	16.31±0.26
	Significant	***	ns	*	ns	***	*	ns	**
10–30	T	13.17±0.79	0.99±0.04	0.81±0.06	14.53±0.40	12.42±1.09	0.96±0.06	0.871±0.03	14.54±0.48
	NT	13.70±0.82	0.99±0.03	0.81±0.05	13.86±0.43	13.49±0.48	1.01±0.05	0.87±0.12	14.21±0.37
	TS	14.45±0.59	1.00±0.03	0.83±0.04	15.10±1.05	14.03±0.91	1.01±0.03	0.89±0.02	15.27±0.85
	NTS	14.15±0.26	1.00±0.05	0.84±0.02	15.45±0.66	13.80±0.75	1.02±0.04	0.86±0.02	15.49±0.04
	Significant	**	ns	ns	ns	*	ns	ns	ns

Significant level (ns: not significant; ^∗𝑃<0.05; ^∗∗𝑃<0.01; ^∗∗∗𝑃<0.001).