以Ⅱ优7号为供试水稻品种,通过精确计量稻田进出水量,研究了四川典型丘陵地区稻田耗水量。结果表明,丘陵地区降水利用率为71.59%,但降水与稻田需水不完全同步;全生育期总灌水量为6 298.6 m3/hm2;稻田耗水量为8 884.4 m3/hm2。相关分析表明,稻田耗水量与稻谷产量呈显著正相关。在四川丘陵地区水稻生产中,节水仍有一定空间。 Taking Ⅱ You No.7 as tested rice variety, the water consumption of paddy field in typical hilly area of ​​Sichuan Province was studied by accurately measuring the inflow and outflow of rice. The results showed that the precipitation utilization rate in hilly area was 71.59%, but the precipitation was not completely synchronized with the water demand in paddy field. The total irrigation water during the whole growth period was 6 298.6 m3 / hm2 and the water consumption in paddy field was 8 884.4 m3 / hm2. Correlation analysis showed that there was a significant positive correlation between rice water consumption and paddy yield. In Sichuan hilly rice production, there is still some room for water conservation.