| Effect of different tillage patterns on organic carbon pool and microbial quotient in t wo sequence rotation syste m with spring wheat and field pea |
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| DOI：10.7606/j.issn.1000-7601.2009.06.03 |
| Key Words: tillage pattern sequence rotation system soil organic carbon readily oxidizable carbon microbial biomass carbon |
| Author Name | Affiliation | | BI Dongmei | College of Resources and Environmental Sciences Gansu Agricultural University, Lanzhou 730070, China | | ZHANG Renzhi | College of Resources and Environmental Sciences Gansu Agricultural University, Lanzhou 730070, China | | WANGJuan | College of Resources and Environmental Sciences Gansu Agricultural University, Lanzhou 730070, China | | WANG Xinjian | College of Resources and Environmental Sciences Gansu Agricultural University, Lanzhou 730070, China | | CAI Liqun | College of Resources and Environmental Sciences Gansu Agricultural University, Lanzhou 730070, China |
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| Abstract: |
| Based on a long-term experiment,the soil organic carbon(SOC),readily oxidizable carbon(ROC) and microbial biomass carbon(MBC) of two sequence rotation systems with spring wheat and field pea in soil layer under different tillage patterns were studied.The results showed that the content of soil organic carbon(SOC) pool in conventional tillage with straw incorporated(TS),no-till without straw cover(NT),no-till with straw cover(NTS) were more than conventional tillage with no straw(T),and the content of SOC in 0～5 cm soil layer was higher than other layers,and decreased with the soil depth,especially in NTS.Correlation analysis showed that the indicator of ROC and MBC had the same response to the long-term tillage methods with SOC.They were significantly correlated to SOC.The accumulation of microbial quotient with NTS was more than other tillage patterns.The results demonstrated that the activity of the carbon in soil of NTS was higher and could convert easily. |
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