4Zhao R H,Liu M G. Silviculture of Semi-arid region[M] . Beijing:Press of Beijing Agricultural University, 1995.
5Dao T H,Tillage and winter wheat residue management effects on water infiltration and storage[J]. Soil Science Society of America Journal, 1993, 157: 1586- 1594.
4Zhao R H,Liu M G. Silviculture of Semi-arid region[M] . Beijing:Press of Beijing Agricultural University, 1995.
5Dao T H,Tillage and winter wheat residue management effects on water infiltration and storage[J]. Soil Science Society of America Journal, 1993, 157: 1586- 1594.
