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Position: Home > Articles > Effects of Different Tillage Methods on Soil Organic Carbon Pool Journal of Agro-Environment Science 2008,27 (02) 224-228

耕作方式对土壤有机碳库的影响

作  者:
宋明伟;李爱宗;蔡立群;张仁陟
单  位:
甘肃农业大学资源与环境学院
关键词:
耕作方式;土壤有机碳;土壤微生物量碳;产量
摘  要:
通过在甘肃中部干旱半干旱农业区进行6a的田间定位试验,探讨了传统耕作(T)、免耕(NT)、免耕+秸秆覆盖(NTS)以及传统耕作+秸秆还田(TS)等处理对土壤有机碳库的影响。结果表明,在0-30cm土层中,NTS、TS、NT处理土壤有机碳含量分别比T处理提高了5.09%、2.64%和4.08%;与T处理相比,NTS、TS、NT处理土壤微生物量碳含量分别增加了69.67%、47.72%和33.22%。NTS、TS、NT处理有利于土壤有机碳的累积。不同处理(NTS、TS、NT、T)条件下土壤有机碳和微生物量碳在土壤剖面分布是随着土层深度的增加而呈现递减趋势。
译  名:
Effects of Different Tillage Methods on Soil Organic Carbon Pool
作  者:
SONG Ming-wei1,2, LI Ai-zong1, CAI Li-qun1, ZHANG Ren-zhi1 (1.College of Resources & Environmental Sciences, Gansu Agricultural University, Lanzhou 730070, China; 2. Environmental Science & Engineering College of SunYat-Sen University, Guangzhou 510275, China)
关键词:
tillage method;soil carbon;microbial biomass carbon;yield
摘  要:
In order to discuss the soil organic carbon pool under the different tillage methods in loess plateau semiarid area which was established in Dingxi of Gansu, the soil under different tillage conditions for 6 years was analyzed by chemical method. The results showed that no-till with straw cover(NTS), conventional tillage with straw incorporated(TS) and no-till without straw cover(NT) increased soil organic carbon contents compared with conventional tillage without straw(T) by 5.09%,2.64% and 4.08% respectively; no-till with straw cover(NTS), conventional tillage with straw incorporated(TS) and no-till without straw cover(NT) increased contents of microbial biomass carbon of soil compared with conventional tillage without straw(T) by 69.67%, 47.72% and 33.22% respectively. Conventional tillage with straw incorporated(TS), no-till without straw cover(NT) and conventional tillage with straw incorporated(TS) to be more advantageous in developing the content of soil carbon. Soil organic carbon and microbial biomass carbon decreased with the increasing depth in soil profiles under different treatments (NTS, TS, NT and T).

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