论文题目: Responses of soil chemical and microbial indicators to conservational tillage versus traditional tillage in the North China Plain
论文编号:
作者: Shuping Qin (秦树平), Xinhua He, Chunsheng Hu (胡春胜,通讯作者), Yuming Zhang (张钰铭)and Wenxu Dong (董文旭)
刊物名称: European Journal of Soil Biology
卷期页码: , ,
发表年度: 2010
DOI: http://dx.doi.org/10.1016/j.ejsobi.2010.04.006
摘要:
This study compared the responses of soil chemical and microbial indicators to the conservational tillage (CT) versus traditional tillage (TT) in a Haplic Cambisol in the North China Plain (NCP). These indicators included soil organic C (SOC), soil total N (STN), soil available P (SAP), cation exchange capacity (CEC), exchangeable Ca2+ and Mg2+, microbial biomass C (MBC), microbial biomass N (MBN), alkaline phosphomonoesterase (AP), β-glucosidase, N-acetyl-β-glucosaminidase (NAG), nitrate reductase (NR), protease, urease and the geometric mean of the assayed enzymes (GMea). Our results showed that almost all investigated parameters, except the contents of CEC, Ca2+, Mg2+ and the ratios of GMea/MBN and C/N, were significantly higher under the CT (no-till, NT and reduced-till, RT) than those under the TT, whilst the crop yield was not significantly affected by tillage treatments. Principle component analysis (PCA) showed that the first and second component explained 67.2% and 16.6% of the total variation, respectively. The first component was significantly correlated with GMea, MBC, MBN and β-glucosidase, and effectively discriminated soils under the NT or RT from those under the TT. Our results indicated that the 6-year CT improved the quality of the Haplic Cambisol by enhancing its chemical and microbial properties, whilst GMea, MBC, MBN and β-glucosidase were among the most effective indicators for monitoring these improvements.
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Responses of soil chemical and microbial indicators to conservational tillage versus traditional til
农业资源研究中心 辅仁网/2017-07-23
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