摘要
旱田土壤氮淋失是引起环境面源污染的重要原因之一。该文从施肥管理(减量施肥和平衡施肥)、水分管理(灌溉制度、灌溉方式和保水剂施用)以及施用缓/控释肥和生物炭等新型的肥料和土壤改良材料等角度,综述了旱田土壤氮素淋溶损失的阻控技术措施,并从加强氮淋失阻控技术和田间监测管理的精细化发展需求,注重阻控技术措施的成本平衡,以及不同阻控技术措施的组装和集成等方面进行了展望,可为促进我国氮肥利用率的提高,减少氮淋失造成的面源污染环境问题提供帮助。
N leaching in dry farmland is one of the most important reason for the environmental non-point pollution.The control measures for soil N leaching in dry farmland has been reviewed from the aspects of fertilizer management(including chemical fertilizer reduction and balanced fertilization),water management(including regime and method of irrigation,water-retaining agent),and soil amendment such as slow/controlling-releasing fertilizer and biochar.Needs about the future study on the N-leaching control measures have been proposed that the technique of the control measures and field monitoring should be designed specially for the certain location,the cost of performing control measures should be reduced,and the different control measures could be assembled systematically.The review provided some helps on improving the N fertilizer use efficiency and solving the problems of non-point pollution caused by N leaching in dry farmland.
作者
付时丰
许莹
牛世伟
杜立宇
蒋明翰
郭昆
孙良杰
FU Shifeng;XU Ying;NIU Shiwei;DU Liyu;JIANG Minghan;GUO Kun;SUN Liangjie(Northeast Key Laboratory of Conservation and Improvement of Cultivated Land(Shenyang)of Ministry of Agriculture,College of Land and Environment,Shenyang Agricultural University,Shenyang 110866,China;Plant Nutrition and Environmental Resources Research Institute,Liaoning Academy of Agricultural Sciences,Shenyang 110161,China;Chifeng Nuclear and Radiation Environmental Monitoring Station,Chifeng 024000,China)
出处
《环境科学与技术》
CAS
CSCD
北大核心
2020年第6期161-168,共8页
Environmental Science & Technology
基金
国家重点研发计划项目(2018YFD0800901-01)
关键词
旱田
氮淋失
阻控措施
面源污染
dry farmland
N leaching
control measures
non-point pollution
