摘要
四川丘陵地区干旱发生频率高,研究稻田供水与耗水情况对水稻节水抗旱具有重要作用。本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。结果表明,丘陵地区降水3611.10 m3/hm2,灌溉用水6299.25 m3/hm2;水稻腾发6424.95 m3/hm2,深层渗漏2459.55 m3/hm2,漫田溢出1026.00 m3/hm2。水稻生产全程耗水8884.50 m3/hm2,其中水分利用效率为0.99 kg/m3,灌溉水利用效率为1.40 kg/m3。在四川丘陵地区,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。
The drought became more and more obviously in hilly region of Sichuan,which restricted the development of local rice production.It was important to understand the relationship between water supply and consume of paddy field.The field experiments were carried out to study the water supply and demand balance of paddy fields.The results showed rainfall in hilly region of Sichuan was 3611.10 m^3/hm^2, irrigation water was 6299.25 m^3/hm^2,the evapotranspiration was 6424.95 m^3/hm^2,leakage water was 2459.55 m^3/hm^2,and water overflow from field was 1026.00 m^3/hm^2.During rice entire growing season,total water use was 8884.50 m^3/hm^2,the water use efficiency and irrigation water use efficiency were 0.99 and 1.40 kg/m^3,respectively.In hilly region of Sichuan,water supply-demand balance of paddy field need to be further studied.
出处
《西南农业学报》
CSCD
北大核心
2012年第1期54-58,共5页
Southwest China Journal of Agricultural Sciences
基金
国家863计划"稻田高效用水机制与农艺节水技术研究与示范"(2002AA2Z4262-3)
四川省科技厅应用基础项目"水稻近等基因导入系抗旱性鉴定与抗旱材料筛选研究"(2008JY0022-1)
关键词
水稻
水分供需平衡
四川
丘陵地区
Rice
Water supply-demand balance
Sichuan
Hilly area
