Protection Methods to Reduce Nitrogen and Phosphorus Losses from Sloping Citrus Land in the Three Gorges Area of China
文献类型：期刊论文
| 作者 | Xia Li-Zhong; Liu Guo-Hua; Wu Yong-Hong; Ma Li; Li Yun-Dong |
| 刊名 | PEDOSPHERE
 |
| 出版日期 | 2015-06-01 |
| 卷号 | 25期号:3页码:478-488 |
| 关键词 | contour hedgerows impermeable membrane intercropping runoff sediment straw mulching |
| ISSN号 | 1002-0160 |
| 通讯作者 | Liu Guo-Hua(lgh3008@163.com) |
| 英文摘要 | The increased application of chemical fertilizers in citrus orchards and the non-point source nitrogen (N) and phosphorus (P) diffusion threaten the fresh water quality of the Three Gorges Reservoir area of China. A 10-year field trial on sloping citrus lands was conducted to evaluate five protection methods for reducing N and P losses: 1) intercropping with perennial white clover (CW); 2) straw mulching of the soil surface (CS); 3) intercropping with yellow daylily contour hedgerows (CH); 4) an impermeable membrane buried in the soil along the contour lines (CM); and 5) intercropping with a rotation of wheat and peanut (CWP). An area of conventional citrus management was also maintained as the control (CK). The results showed that CM and CH were the most effective methods for reducing surface runoff. The sediment yield were reduced at the highest rate by CW and CH and was also significantly reduced by CS. Reduced runoff volume and sediment yield were the crucial mechanism for the reductions in N and P losses. Compared with the control, CW, CS, CH, and CM reduced annual runoff by 9%, 13%, 25%, and 30%, sediment yield by 77%, 55%, 71%, and 28%, N loss by 10%, 23% 36%, and 37%, and P loss by 39%, 31%, 27%, and 25%, respectively. CW, CS, CH, and CM were effective in reducing N and P losses from the sloping citrus land. However, over the long-term, surface soil nutrient accumulation in CW, CS, and CH diminished the benefit of those methods in reducing N and P losses. In addition, CWP increased soil erosion and nutrient loss, which showed that citrus intercropping with other crops was an unsuitable method for citrus sloping land in the Three Gorges area. |
| 收录类别 | SCI |
| WOS关键词 | RESERVOIR AREA ; SOIL-EROSION ; AGRICULTURAL LAND ; NUTRIENT LOSSES ; YANGTZE-RIVER ; RUNOFF ; SEDIMENT ; GRADIENTS ; TILLAGE ; CARBON |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000354831200015 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558386 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Liu Guo-Hua |
| 作者单位 | Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xia Li-Zhong,Liu Guo-Hua,Wu Yong-Hong,et al. Protection Methods to Reduce Nitrogen and Phosphorus Losses from Sloping Citrus Land in the Three Gorges Area of China[J]. PEDOSPHERE,2015,25(3):478-488. |
| APA | Xia Li-Zhong,Liu Guo-Hua,Wu Yong-Hong,Ma Li,&Li Yun-Dong.(2015).Protection Methods to Reduce Nitrogen and Phosphorus Losses from Sloping Citrus Land in the Three Gorges Area of China.PEDOSPHERE,25(3),478-488. |
| MLA | Xia Li-Zhong,et al."Protection Methods to Reduce Nitrogen and Phosphorus Losses from Sloping Citrus Land in the Three Gorges Area of China".PEDOSPHERE 25.3(2015):478-488. |
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来源：南京土壤研究所
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