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| Development and application of irrigation and drainage equipment system |
| Jin Qiu1, Xu Shanshan2, Xia Meiling1 |
| 1.Jiangsu Water Conservancy Research Institute, Nanjing, Jiangsu 210017, China; 2. Water Resources Bureau of Nanjing City, Nanjing, Jiangsu 210008, China |
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Abstract The research status of the field of agricultural irrigation and drainage at home and abroad, and the features of current common irrigation and drainage device were analyzed. To meet with the urgent needs of water-saving irrigation and controlled drainage equipment in China, the integration of irrigation and drainage equipment system was proposed. This system, which depended on the demand for water table of crops in different periods, made good use of rainfall and irrigation, accurately controlled water table of irrigation and drainage for paddy fields, and solved the problem that current irrigation and drainage equipment could not simultaneously achieve automatic control of irrigation and drainage. The results show that test area for paddy field integration of irrigation and drainage system increased 150 mm use of rainfall, rainfall utilization ratio increased by 21%, irrigation rate decreased by 21% and rice yield increased by 4.3% per mu compared to the control area. The system could improve the fertilizer utilization ratio and decrease agricultural non-point source pollution. So it is convihcible that the system can bring considerable economic, ecological benefits and wide applications.
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Received: 12 August 2014
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