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[目的]研究稻田供水与耗水情况对水稻节水抗旱作用。[方法]该研究利用控制性田间试验,研究了四川丘陵地区水稻田间水分供需平衡关系。[结果]丘陵地区降水3611.10m3/hm2,灌溉用水6299.25m3/hm2;水稻腾发6424.95m3/hm2,深层渗漏2459.55m3/hm2,漫田溢出1026.00m3/hm2。水稻生产全程耗水8884.50m3/hm2,其中水分利用效率为0.99kg/m3,灌溉水利用效率为1.40kg/m3。[结论]在四川丘陵地区,应进一步协调稻田供水与耗水,从而实现抗旱节水有待进一步研究。
[Objective] The research aimed to study the effect of rice water supply and water consumption on rice water-saving and drought-resistance. [Method] The controlled field experiment was used to study the water supply and demand balance in paddy field in Sichuan hilly area. [Result] The precipitation in the hilly area was 3611.10m3 / hm2, and the irrigation water was 6299.25m3 / hm2. The rice evapotranspiration was 6424.95m3 / hm2, the deep leakage was 2459.55m3 / hm2, and the overflow was 1026.00m3 / hm2. The whole water consumption of rice production was 8884.50m3 / hm2, of which water use efficiency was 0.99kg / m3 and irrigation water use efficiency was 1.40kg / m3. [Conclusion] In the hilly area of Sichuan, it is necessary to further coordinate the water supply and water consumption in paddy fields to achieve drought-resistant and water-saving needs further study.