Particle-size effects on soil temperature, evaporation, water use efficiency and watermelon yield in fields mulched with gravel and sand in semi-arid Loess Plateau of northwest China
文献类型：期刊论文
| 作者 | Xie, Zhongkui1; Wang, Yajun1; Cheng, Guodong1; Malhi, Sukhdev S.2; Vera, Cecil L.2; Guo, Zhihong1; Zhang, Yubao1 |
| 刊名 | AGRICULTURAL WATER MANAGEMENT
 |
| 出版日期 | 2010-06-01 |
| 卷号 | 97期号:6页码:917-923 |
| 关键词 | Gravel-sand mulch Particle size Soil temperature Water use efficiency Watermelon |
| ISSN号 | 0378-3774 |
| DOI | 10.1016/j.agwat.2010.01.023 |
| 通讯作者 | Wang, Yajun(w.yajun@yahoo.com) |
| 英文摘要 | Gravel and sand mulch is an effective practice in conserving soil and moisture. However, the proportion of different particle size in this kind of mulch layer is an important factor to be considered in order to obtain optimal results from this practice. From 2005 to 2007, a series of experiments including one with watermelon were conducted in the semi-arid Loess Plateau of northwest China to determine the influence of particle size and its proportion in mulch layer on soil temperature, evapotranspiration, water use efficiency (WUE) and watermelon (Citrullus lanatus L.) yield. The treatments in no-watermelon experiments included particle sizes classified as <0.3, 0.3-1, 1-2, 2-4, 4-6, 6-8 and 8-10 cm mesh size or various rates of 2-6 cm pebble accounting for 0, 10, 20, 30, 40, 50, 60 and 70% with 30% 1-2 cm gravel-sand in mulch layer (as well as correspondingly decreasing sand proportions). The watermelon experiment included three particle sizes, 0.3-1, 1-2 and 2-6 cm. Soil temperature at 8:00 h was highest for the 1-2 cm treatment, and the daily average temperature at 14:00 h was highest for the 0.3-1 cm treatment. Soil temperature decreased with particle size increasing due to porosity enlarging. The relationship between soil temperature and particle size followed a quadratic or cubic curve. Soil temperature was increased by gravel-sand mulch plus plastic film. The increment of soil temperature was larger especially for 1-4 cm particle size. In the gravel-sand mulch layer having different size particles, the greater percentage being of 2-6 cm pebbles, increases porosity, and lowers soil temperature, and causes more evaporation. The results of the watermelon experiment showed that soil moisture before seeding would not affect the yield during the years of using gravel mulch. Watermelon yield and WUE were higher for 1-2 and 0.3-1 cm treatments than 2-6 cm treatments in later experiments during 2006 and 2007. In conclusion, 2-6 cm large size particles would not account for much in gravel-sand mulching layer. It would be better if the percentage of 2-6 cm particles was less than 30%. (C) 2010 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | REGION |
| WOS研究方向 | Agriculture ; Water Resources |
| WOS类目 | Agronomy ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000276703200017 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556348 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Wang, Yajun |
| 作者单位 | 1.Chinese Acad Sci, Gaolan Ecol & Agr Integrated Expt Stn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 2.Agr & Agri Food Canada, Melfort, SK S0E 1A0, Canada |
| 推荐引用方式 GB/T 7714 | Xie, Zhongkui,Wang, Yajun,Cheng, Guodong,et al. Particle-size effects on soil temperature, evaporation, water use efficiency and watermelon yield in fields mulched with gravel and sand in semi-arid Loess Plateau of northwest China[J]. AGRICULTURAL WATER MANAGEMENT,2010,97(6):917-923. |
| APA | Xie, Zhongkui.,Wang, Yajun.,Cheng, Guodong.,Malhi, Sukhdev S..,Vera, Cecil L..,...&Zhang, Yubao.(2010).Particle-size effects on soil temperature, evaporation, water use efficiency and watermelon yield in fields mulched with gravel and sand in semi-arid Loess Plateau of northwest China.AGRICULTURAL WATER MANAGEMENT,97(6),917-923. |
| MLA | Xie, Zhongkui,et al."Particle-size effects on soil temperature, evaporation, water use efficiency and watermelon yield in fields mulched with gravel and sand in semi-arid Loess Plateau of northwest China".AGRICULTURAL WATER MANAGEMENT 97.6(2010):917-923. |
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来源：寒区旱区环境与工程研究所
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