Effect of drip irrigation on soil nutrients changes of saline-sodic soils in the Songnen Plain
文献类型：SCI/SSCI论文
| 作者 | Liu S. H. ; Kang Y. H. ; Wan S. Q. ; Jiang S. F. ; Liu S. P. ; Sun J. X. |
| 发表日期 | 2013 |
| 关键词 | Leymus chinensis Restoration Saline grassland Soil nutrient Spatial distribution northeast china spatial variability water establishment simulation management atmosphere steppe land |
| 英文摘要 | A field experiment was carried out to research the changes and spatial distributions of soil nutrients in saline-sodic soil for different number of cultivated years under drip irrigation. The distributions of available potassium (AK), available phosphorus (AP), nitrate nitrogen (NO3 (-)-N), ammonium nitrogen (NH4 (+)-N), as well as the amount of total nitrogen (TN), total phosphorus (TP) and organic carbon (OC) in the 0-40 cm soil layers in saline-sodic soils planted with Leymus chinensis for 1, 2, and 3 years were studied. The results showed that the distance from the emitter had an obvious effect on soil nutrients. Drip irrigation had substantial effects on levels of AK, AP, and NO3 (-)-N. The contents of AK, AP, and NO3 (-)-N were very high in the area near the emitter in the horizontal direction. In the vertical direction, levels of all of the available and total soil nutrients decreased with increased soil depth. Levels of AK, AP, NO3 (-)-N, NH4 (+)-N, TN, TP, and OC all increased with continued cultivation of crops on saline-sodic soil using drip irrigation. Compared to the nutrients found in soils from the natural L. chinensis grasslands, the contents of AK and TP were higher in the drip-irrigated soils, although the contents of AP, NO3 (-)-N, and NH4 (+)-N were broadly comparable. Given the rate of improvements in nutrient levels, we forecast that the nutrients in drip-irrigated saline-sodic soils should match those of the natural L. chinensis grasslands after 3-6 years of cultivation. |
| 出处 | Paddy and Water Environment |
| 卷 | 11 |
| 期 | 1-4 |
| 页 | 603-610 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1611-2490 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/30396]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Liu S. H.,Kang Y. H.,Wan S. Q.,et al. Effect of drip irrigation on soil nutrients changes of saline-sodic soils in the Songnen Plain. 2013. |
入库方式： OAI收割
来源：地理科学与资源研究所
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