| Tillage effect on organic carbon in a purple paddy soil |
| |
| 作者姓名： | HUANG Xue-Xi GAO Ming WEI Chao-Fu XIE De-Ti PAN Gen-Xing |
| |
| 作者单位： | [1]College of Resources and Environment, Southwest Agricultural University, Chongqing 400716 （China） [2]College of Environmental Science and Technology, Guangzhou University, Guangzhou 510006 （China） [3]College of Resources and Environment, Nanjing Agricultural University, Nanjing 210095 （China） |
| |
| 摘 要： | The distribution and storage of soil organic carbon （SOC） based on a long-term experiment with various tillage systems were studied in a paddy soil derived from purple soil in Chongqing, China. Organic carbon storage in the 0-20 and 0-40 cm soil layers under different tillage systems were in an order： ridge tillage with rice-rape rotation （RT-rr） 〉 conventional tillage with rice only （CT-r） 〉 ridge tillage with rice only （RT-r） 〉 conventional tillage with rice-rape rotation （CT-rr）. The RT-rr system had significantly higher levels of soil organic carbon in the 0-40 cm topsoil, while the proportion of the total remaining organic carbon in the total soil organic carbon in the 0-10 cm layer was greatest in the RT-rr system. This was the reason why the RT-rr system enhanced soil organic carbon storage. These showed that tillage system type was crucial for carbon storage. Carbon levels in soil humus and crop-yield results showed that the RT-rr system enhanced soil fertility and crop productivity. Adoption of this tillage system would be beneficial both for environmental protection and economic development.
|
| 关 键 词： | 碳 有机物质 稻土 水稻 耕地 |
| 收稿时间： | 2006-05-07 |
| 修稿时间： | 2006-07-24 |
Tillage effect on organic carbon in a purple paddy soil |
| |
| HUANG Xue-Xi,GAO Ming,WEI Chao-Fu,XIE De-Ti,PAN Gen-Xing.Tillage effect on organic carbon in a purple paddy soil[J].Pedosphere,2006,16(5):660-667. |
| |
| Authors: | HUANG Xue-Xi GAO Ming WEI Chao-Fu XIE De-Ti and PAN Gen-Xing |
| |
| Institution: | College of Resources and Environment, Southwest Agricultural University, Chongqing 400716,China. |
| |
| Abstract: | The distribution and storage of soil organic carbon (SOC) based on a long-term experiment with various tillage systems were studied in a paddy soil derived from purple soil in Chongqing, China. Organic carbon storage in the 0-20 and 0-40 cm soil layers under different tillage systems were in an order: ridge tillage with rice-rape rotation (RT-rr) > conventional tillage with rice only (CT-r) > ridge tillage with rice only (RT-r) > conventional tillage with rice-rape rotation (CT-rr). The RT-rr system had significantly higher levels of soil organic carbon in the 0-40 cm topsoil, while the proportion of the total remaining organic carbon in the total soil organic carbon in the 0-10 cm layer was greatest in the RT-rr system. This was the reason why the RT-rr system enhanced soil organic carbon storage. These showed that tillage system type was crucial for carbon storage. Carbon levels in soil humus and crop-yield results showed that the RT-rr system enhanced soil fertility and crop productivity. Adoption of this tillage system would be beneficial both for environmental protection and economic development. |
| |
| Keywords: | carbon sequestration organic carbon storage purple paddy soil tillage system |
| 本文献已被 维普 万方数据 ScienceDirect 等数据库收录！ |
| 点击此处可从《土壤圈》浏览原始摘要信息 |
| 点击此处可从《土壤圈》下载免费的PDF全文 |
