| 耕作管理措施对残茬覆盖及其分解的影响 |
| |
| 引用本文： | ZHANG Zhi-Guo,XU Qi,R. L. BLEVINS. 耕作管理措施对残茬覆盖及其分解的影响[J]. 土壤圈, 1998, 8(3): 193-200 |
| |
| 作者姓名： | ZHANG Zhi-Guo XU Qi R. L. BLEVINS |
| |
| 作者单位： | College of Resources and Environment, Shandong Agricultural University, Taian 271018 (China);Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China);Department of Agronomy, University of Kentucky, Lexington, KY 40546 (USA) |
| |
| 摘 要： | The effects of tillage methods on percent surface residue cover remaining and decomposition rates of crop residues were evaluated in this study. The line transect method was used to measure residue cover percentage on continuous corn (Zea mays L.) plots under no tillage (NT), conventional tillage (CT), chisel plow (CH), and disk tillage (DT). Samples of rye (Secale cereale L.) and hairy vetch (Vicia villosa Roth) were used for residue decomposition study. Results showed that the percentage of residue cover remaining was significantly higher for NT than for CH and DT and that for CT was the lowest (< 10%). For the same tillage system, the percent residue cover remaining was significantly higher in the higher fertilizer N rate treatments relative to the lower fertilizer N treatments. Weight losses of rye and vetch residues followed a similar pattern under CT and DT, and they were significantly faster in CT and DT than in NT system. Also, the amounts of residue N remaining during the first 16 weeks were always higher under NT than under CT and DT.
|
| 关 键 词： | 作物残余 分解率 非耕地 耕地管理系统 有机碳 有机氮 |
Effects of tillage management systems on residue cover and decomposition |
| |
| ZHANG Zhi-Guo,XU Qi and R. L. BLEVINS. Effects of tillage management systems on residue cover and decomposition[J]. Pedosphere, 1998, 8(3): 193-200 |
| |
| Authors: | ZHANG Zhi-Guo XU Qi R. L. BLEVINS |
| |
| Affiliation: | College of Resources and Environment, Shandong Agricultural University, Taian 271018, China. |
| |
| Abstract: | The effects of tillage methods on percentage surface residue cover remaining and decomposition rates of crop residues were evaluated in Kentucky, USA. The line transect method was used to measure residue cover percentage on continuous maize plots under no-tillage (NT), conventional tillage (CT), chisel plough (CH), and disc tillage (DT). Samples of rye (Secale cereale) and hairy vetch (Vicia villosa) were used for residue decomposition study. Results showed that the percentage of residue cover remaining was significantly higher for NT than for CH and DT and that for CT was the lowest (<10%). For the same tillage system, the percentage residue cover remaining was significantly higher in the higher fertilizer N rate treatments relative to the lower fertilizer N treatments. Weight losses of rye and vetch residues followed a similar pattern under CT and DT, and they were significantly faster in CT and DT than in the NT system. The amounts of residue N remaining during the first 16 weeks were always higher under NT than under CT and DT. |
| |
| Keywords: | crop residue decomposition rate no tillage organic C organic N |
|
| 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》下载全文 |
|
