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

Table 7

Grain yield under different treatments (t ha⁻¹).

Crop	Year	T	NT	TS	NTS	Significant
Spring wheat	2002	1.816±0.279	1.414±0.362	1.736±0.276	2.151±0.246	***
	2003	1.416±0.281	1.545±0.356	1.646±0.367	1.825±0.132	*
	2004	2.189±0.248	1.664±0.219	2.162±0.221	2.382±0.304	*
	2005	2.900±0.519	3.077±0.292	2.988±0.663	3.327±0.060	ns
	2006	1.383±0.210	1.317±0.200	1.565±0.235	1.549±0.123	ns
	2007	0.562±0.132	0.633±0.169	0.666±0.126	0.944±0.187	**
	2008	1.632±0.549	1.818±0.899	1.851±0.312	2.100±0.329	ns
	2009	1.233±0.371	0.985±0.644	1.670±0.325	1.607±0.383	*
Field pea	2002	1.653±0.177	1.416±0.275	1.527±0.313	1.790±0.213	*
	2003	0.881±0.206	0.803±0.156	0.823±0.101	1.269±0.288	**
	2004	1.708±0.145	1.496±0.440	1.681±0.349	1.668±0.193	ns
	2005	1.686±0.241	1.816±0.268	1.911±0.672	2.119±0.534	ns
	2006	0.759±0.129	0.552±0.122	0.872±0.123	0.890±0.048	**
	2007	0.206±0.023	0.277±0.067	0.342±0.053	0.553±0.088	***
	2008	1.342±0.196	1.306±0.387	1.190±0.486	1.649±0.180	ns
	2009	0.762±0.127	0.727±0.087	0.857±0.143	0.873±0.249	ns

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