淠史杭灌区水稻“浅湿灌溉”与“浅灌深蓄”技术的节水效应研究

Water-saved effects of shallow-wet irrigation and shallow-irrigation and deep-sluice technique on rice in Pi-shi-hang irrigation district

通过多年对淠史杭灌区水稻不同生育阶段的“浅湿间歇”灌溉、雨季田间蓄雨深度与产量关系的试验,得出水稻不同生育期的适宜的间歇时间、灌溉定额和蓄雨深度;在此研究基础上,并结合淠史杭灌区水资源分布特点,总结出上游地区“浅湿间歇”和下游地区“两保深蓄”的节水灌溉技术要点。

According to the relationship between yield and shallow-wet intermittent irrigation and the depth of rainfall at different rice growth stages in Pi-shi-hang district, the optimal intermittent days, irrigation ration and storerainfall depth were concluded . On the base of former results and combine the characteristic of water distribution, shallow-wet intermittent irrigation in upriver area keeping enough water at the tillering and booting stage and storing much rainfall in the rain season in backward position were summarized.