| Cite this article: | 李江,苏明晓,姜洪喆,等.人工降雨设备在农田水文实验中的应用进展[J].灌溉排水学报,0,():-. |
| LI Jiang,SU Ming-xiao,JIANG Hong-zhe,et al.人工降雨设备在农田水文实验中的应用进展[J].灌溉排水学报,0,():-. |
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| Review of the artificial rainfall equipment application on agro-hydrological experiments |
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LI Jiang1, SU Ming-xiao1, JIANG Hong-zhe2, SHI Chuan-meng1
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1.College of Agricultural Science and Engineering,Hohai University;2.College of Mechanical and Electronic Engineering,Nanjing Forestry University
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| Abstract: |
| 【Objective】 Artificial rainfall equipment (ARE) is an important water supply equipment in agro-hydrological experiment, which can provide an effective rainfall simulation method for the research of rainfall infiltration, soil erosion and solute transport. The uncertainty of natural rainfall can be avoided by AREs, and the accuracies of experiment results can be reflected directly by the water supply accuracy of ARE. In order to make better use of artificial rainfall equipment in agro-hydrological experiment in the future, this study reviewed the application progress of ARE in agro-hydrological experiments. 【Method】The domestic and international AREs were sorted out, summarized and prospected from their classification, principle and characteristics. 【Result】There are mainly four types of ARE, i.e., needle-type ARE, suspension line type ARE, pipe network type ARE and sprinkler-type ARE. They are widely used in the soil column experiments, soil flume experiments and field experiments. 【Conclusion】 Needle-type AREs are widely used in soil column experiment,s sprinkler-type AREs are most widely used in soil flume experiments and field experiments. While pipe network type and suspension line type AREs are less applied on agro-hydrological research compared with the other two AREs. The research content involves infiltration performance, solute soil transportation, soil erosion, crop water requirement, water and fertilizer management, etc. At present, although scholars have made great achievements in farmland artificial rainfall equipment, there are still some problems, such as unnecessary errors caused by artificial control, difficulty in precise control of raindrop diameter and intensity, and inconvenience portability of experimental equipment. Therefore, ARE is expected to be further developed to be extensive, automatic, intelligent, precise and portable in the future. |
| Key words: agro-hydrology; rainfall simulation; artificial rainfall equipment |
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