摘要
通过田间试验,研究了不同水肥模式对单季水稻水分利用效率和减污效率的影响,提出了南方丘陵区效率最优的稻田节水增效减污综合技术。结果表明,与当地常规水肥模式相比,以"蓄雨间歇灌溉+3次施肥"为代表的南方丘陵区节水增效减污技术,可减少稻田灌溉用水27%,增加水稻产量10%,提高降雨利用率10%,提高灌溉水分生产率51%。与此同时,该技术可消减稻田总氮、硝氮、氨氮、COD污染物排放量62.0%、6.8%、76.9%、27.1%。
Field experiments were conducted to study the effects of different water fertilization modes on water efficiency and wastewater reduction of seasonal rice.An optimization of rice irrigation comprehensive technology in southern part of China was demonstrated.The results indicated that the combination of rain storage intermittent irrigation technology and 3times of fertilization technology would reduce by 27% of the irrigation quota,increase by 10% of the rice products,and improve by 10% of the rain water usage efficiency and 51% of the irrigation water productivity.In the meantime,this new technology also reduced TN,NO3-N,NH3-N and COD pollutant discharge by 62.0%,6.8%,76.9% and 27.1%,respectively.
出处
《灌溉排水学报》
CSCD
北大核心
2015年第11期6-10,共5页
Journal of Irrigation and Drainage
基金
水利部公益性行业科研专项(201301012)
关键词
稻田
节水
增效
减污
paddy
water saving
efficiency
pollution reduction
