title: Effects of deep tillage and straw returning on soil microorganism and enzyme activities.
abstract: Two field experiments were conducted for two years with the aim of studying the effects of deep tillage and straw returning on soil microorganism and enzyme activity in clay and loam soil. Three treatments, (1) conventional tillage (CT), shallow tillage and straw returning; (2) deep tillage (DT), deep tillage and straw returning; and (3) deep tillage with no straw returning (DNT), were carried out in clay and loam soil. The results showed that deep tillage and straw returning increased the abundance of soil microorganism and most enzyme activities. Deep tillage was more effective for increasing enzyme activities in clay, while straw returning was more effective in loam. Soil microorganism abundance and most enzyme activities decreased with the increase of soil depth. Deep tillage mainly affected soil enzyme activities in loam at the soil depth of 20-30 cm and in clay at the depth of 0-40 cm. Straw returning mainly affected soil microorganism and enzyme activities at the depths of 0-30 cm and 0-40 cm, respectively.
authors: Agronomy College, Henan Agricultural Universtiy, Zhengzhou 450002, China ; Institute of Horticulture, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China.
authors: Baoyi
authors: B
authors: Ji
authors: Institute of Digital Agriculture, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang 310021, China.
authors: Hao
authors: H
authors: Hu
authors: Agronomy College, Henan Agricultural Universtiy, Zhengzhou 450002, China.
authors: Yali
authors: Y
authors: Zhao
authors: Agronomy College, Henan Agricultural Universtiy, Zhengzhou 450002, China.
authors: Xinyuan
authors: X
authors: Mu
authors: Department of Engineering, Nova Scotia Agricultural College, Truro, NS, Canada B2N 5E3.
authors: Kui
authors: K
authors: Liu
authors: Agronomy College, Henan Agricultural Universtiy, Zhengzhou 450002, China.
authors: Chaohai
authors: C
authors: Li
mesh_terms: D000383:Agriculture; D018547:Plant Stems; D012987:Soil; D012988:Soil Microbiology; D014908:Triticum
chemical_list: D012987:Soil