辽宁中部地区水稻控制灌溉制度的制定与应用

Scheduling and Application of Irrigation Regime of Control Irrigation for Rice in the Central Area of Liaoning

在计算得出辽宁中部地区控制灌溉水稻日耗水量和降雨频率为50％、75％、90％对应典型年的基础上，结合典型年实测降雨资料，制定了不同降雨频率典型年水稻控制灌溉制度，并在辽宁中部地区对水稻控制灌溉进行了推广应用。结果表明，实施控制灌溉制度较常规灌溉可节水13.67％～15.41％，增产11.3％～12.7％，水分生产效率提高29.26％～32.97％。

On the basis of daily water consumption for rice under control irrigation condition and the measured rainfall information of typical year with rainfall frequency of 50%, 75%and 90%, irriga-tion regimes of control irrigation for rice were scheduled, and furthermore, control irrigation was ap-plied in the central area of Liaoning.The results showed that compared to the traditional irrigation, the irrigation water of control irrigation decreased from 13.67%to 15.41%, while rice yield and wa-ter use efficiency under control irrigation condition increased 11.3% ~12.7% and 29.26% ~32.97%respectively.