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《China Rice》 2018-03
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Effects of Water Management on Yield, Quality of Rice and Nitrogen and Phosphorus Loss in Paddy Field

XING Sulin;MA Fanfan;WU Weijun;XU Yunlian;MA Youhua;Resources and Environment College, Anhui Agricultural University;  
According to the characteristics of rice water demand, field water management is of great significance to quality and yield of rice. The appropriate field water management is beneficial to control nitrogen and phosphorus loss in paddy field. Water-saving irriga-tion technology can improve quality and yield of rice. The loss of nitrogen and phosphorus in paddy field are mainly through the loss of rainfall, runoff and drainage. So reducing the irrigation amount of paddy field, making full use of rainwater, prolonging the time between irrigation and fertilization, and controling the retention time of rice water logging in paddy field or drainage ditch, are the im-portant measures to reduce the concentration and the loss of nitrogen and phosphorus. In order to find out the water level management mode which is most beneficial to the growth of rice and reduce the loss of nitrogen and phosphorus, it is necessary to study the optimal control of water level in paddy field, the quality and yield of rice under different limit water level management, the loss of nitrogen and phosphorus in farmland in China, rice field water balance and nutrient load model, which could guide the field water management more accurate.
【Fund】: 国家重点研发计划“农业面源和重金属污染农田综合防治与修复技术研发”:水稻主产区氮磷流失综合防控技术与产品研发(2016YFD0800503)
【CateGory Index】: S511
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