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

Table 4

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

Depth (cm)	Treatment	P/W			W/P
		Available N	Available P	Available K	Available N	Available P	Available K
0–5	T	37.37±1.77	13.61±0.84	211.41±21.28	37.31±0.94	14.22±0.82	192.04±13.02
	NT	33.94±1.97	13.78±0.55	247.13±12.49	35.63±0.90	14.25±2.50	227.91±21.18
	TS	37.97±0.92	16.40±1.34	263.76±38.74	40.64±1.82	16.23±0.76	265.17±16.01
	NTS	37.44±1.02	18.96±1.46	280.66±47.11	40.76±1.86	18.68±2.29	286.98±41.57
	Significant	ns	***	ns	*	*	*
5–10	T	35.13±3.02	12.34±1.10	190.74±19.19	35.94±2.25	14.95±1.02	187.41±37.75
	NT	34.54±0.99	13.12±1.45	202.43±32.17	34.51±5.88	15.09±0.89	191.90±26.75
	TS	36.77±1.84	14.15±1.38	259.75±4.02	39.63±0.98	16.30±2.22	248.04±34.31
	NTS	34.61±2.03	16.04±2.12	262.65±24.37	37.95±2.65	16.11±0.58	265.27±45.85
	Significant	ns	*	*	ns	ns	ns
10–30	T	41.91±0.09	5.57±2.34	159.45±9.27	42.44±2.61	5.15±0.65	139.25±5.39
	NT	37.43±1.95	4.76±0.72	163.82±6.59	37.99±1.00	4.74±0.56	147.90±16.71
	TS	41.38±0.98	5.74±0.39	195.07±9.71	42.42±2.46	5.24±0.38	192.27±6.81
	NTS	37.91±2.50	5.57±0.44	202.21±20.53	40.77±2.48	4.96±0.61	202.03±46.50
	Significant	*	ns	*	ns	ns	*

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