Review on research of farmland drainage technology

Wang Shaoli;Xu Di;Chen Haorui;Han Songjun;Jiao Pingjin;Department of Irrigation and Drainage,China Institute of Water Resources and Hydropower Research;National Center of Efficient Irrigation Engineering and Technology Research - Beijing;

farmland drainage;;waterlogging disaster;;risk assessment;;drainage engineering;;drainage management

The research achievements domestic and abroad in recent years were reviewed from three aspects: risk assessment of waterlogging disaster,technology as well as management of farmland drainage,and the prospects of future development of farmland drainage technology were described. The key research directions in the future was pointed out: the evolution laws of farmland waterlogging disaster under the changing environment should be studied,and the forecast and evaluation technique under artificial- natural complex conditions should be established; the integrated control standard of waterlogging disaster for satisfying the crop production and basic environmental protection demand should be investigated to promote the technical level and management model of conventional farmland drainage control,and the combined system of modern and conventional drainage technology should be discussed; the efficient utilization of farmland drainage resources should be paid attention,and the farmland drainage management model should be studied combining water- saving irrigation with controlled drainage,irrigation and drainage with pond purification,drainage water reuse for irrigation with waterlogging and drought control.