位山灌区农田氮素流失试验研究
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摘要
为研究农田土壤中氮元素的迁移规律,通过田间测坑试验,研究了不同水肥处理对冬小麦—夏玉米生育期内土壤中氮素时空变化特征的影响。结果表明:不同水肥处理对硝态氮、铵态氮、总氮的流失有显著影响。不同水肥处理对土壤中总氮含量的分布特征影响不大。在小麦生育期内,由于根系对氮素的吸收利用,土壤剖面总氮流失渗漏量随着小麦的生长逐渐减少。总之,位山灌区长期大量施用化肥,并采用普通漫灌的灌溉方式将加剧氮素的流失,对灌区地下水造成潜在污染风险。
引文
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[10]于兴修,杨桂山,梁涛.西苕溪流域土地利用对氮素径流流失过程的影响[J].农业环境保护, 2002, 21(5):424-427.
[11]李海锋,李雪莹,袁红梅.用全自动凯氏定氮仪测定肥料中总氮含量方法探讨[J].广州化工, 2018, 46(10):87-89.
[12]李俊洁,陈小迪.土壤铵态氮测定方法研究[J].世界有色金属, 2017, 211-212.
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[14]陈岩,孟晓宏,田晓军.土壤硝态氮三种测定方法介绍与比较[J].内蒙古水利, 2011(5):164-165.
[15]彭园珍.土壤提取液中总氮测定方法的比较[J].生物技术世界, 2014:45-46.
[2] Lam Q D, Schmalz B, Fohrer N. Modelling point and diffuse source pollution of nitrate in a rural lowland catchment using the SWAT model[J]. Agricultural Water Management,2010, 97(2):317-325.
[3] Akhavan S, Koupai J A, Mousavi S F, et al. Application of SWAT model to investigate nitrate leaching in Hamadan Bahar Watershed, Iran[J]. Agriculture, Ecosystems and Environment, 2010, 139(4):675-688.
[4]宋林旭,刘德富,肖尚斌,等.基于SWAT模型的三峡库区香溪河非点源氮磷负荷模拟[J].环境科学学报, 2013, 33(1):267-275.
[5] Shuman L M, Phosphorus and nitrate nitrogen in runoff following fertilizer application to turfgrass. Environ.Qual, 2002,31:1710-1715.
[6] Allaire-Leung S E, Wu L, Mitchell J P, et al. Nitrate leaching and soil nitrate content as affected by irrigation uniformity in a carrot field[J]..Agricultural Water Management,2001, 48(1):37-50.
[7] Tian Y H, Yin B, Yang I. Z, et al. Nitrogen runoff and leaching losses during rice-wheat rotations in Taihu Lake region,China.Pedosphere, 2007, 17(4):445-456.
[8]梁新强,田光明,李华,等.天然降雨条件下水稻田氮磷径流流失特征研究[J].水土保持学报, 2005, 19(1):59-63.
[9]黄满湘,章申,唐以剑,陈喜保.模拟降雨条件下农田径流中氮的流失过程[J].土壤与环境. 2001, 10(1):6-10.
[10]于兴修,杨桂山,梁涛.西苕溪流域土地利用对氮素径流流失过程的影响[J].农业环境保护, 2002, 21(5):424-427.
[11]李海锋,李雪莹,袁红梅.用全自动凯氏定氮仪测定肥料中总氮含量方法探讨[J].广州化工, 2018, 46(10):87-89.
[12]李俊洁,陈小迪.土壤铵态氮测定方法研究[J].世界有色金属, 2017, 211-212.
[13]涂常青.土壤硝态氮两种测定方法的比较[J].安徽农业科学, 2006, 34(9):1925-1928.
[14]陈岩,孟晓宏,田晓军.土壤硝态氮三种测定方法介绍与比较[J].内蒙古水利, 2011(5):164-165.
[15]彭园珍.土壤提取液中总氮测定方法的比较[J].生物技术世界, 2014:45-46.