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硫元素对蔬菜地土壤NO3淋溶损失的影响

DOI: 10.7685/j.issn.1000-2030.2004.03.013, PP. 54-57

Keywords: 硫元素,硝化抑制剂,蔬菜地土壤,土壤硝态氮,淋溶损失

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Abstract:

通过温室盆栽淋洗试验,研究了硫元素对蔬菜地土壤NO-3淋溶损失和土壤无机氮含量的影响。结果表明在12周试验期间,与对照相比,在种葱和不种葱条件下,硫元素处理土壤NO-3N累积淋失量均降低83%左右,NH+4N累积淋失量分别增加203和249mg？pot-1,无机氮(NH+4N+NO-3N)淋失量则均降低60%左右;试验结束后,其土壤无机氮浓度分别增高827%和748%,且主要为NH+4N。类似结果也在S2O2-3处理中发现,但SO2-4处理则无此现象。可见硫元素施入土壤后可抑制土壤氮的淋失,其作用机制是由硫元素氧化产生的S2O2-3作用所致。鉴于S2O2-3使用量是硫元素的14倍,而后者效果仍然比前者好,因此认为硫元素是适用于蔬菜土壤的硝化抑制剂之一,特别是有效硫较低的土壤。

 References

[1]  Biederbeck V O.Soil microbial and biochemical properties after ten years of fertilization with urea and anhydrous amoonia[J].Canadian Journal of Soil Science.1996,76:7-14
[2]  Christensen S.Spatial variation in denitrification-dependency of activity centers on the soil environment[J].SOIL SCIENCE SOCIETY OF AMERICA JOURNAL.1990,54(6):1608-1613
[3]  Sullovan D M,Havlin J L.Soil and environmental effects on urease inhibition by ammonium thiosulfate[J].SOIL SCIENCE SOCIETY OF AMERICA JOURNAL.1992,56:950-956
[4]  Hu Z Y,Beaton J D,Cao Z H.Sulfate formation and extraction from red soil treated with microzied elemental sulfur fertilizer and incubated in closed and open systems[J].Communications in Soil Science and Plant Analysis.2002,33:1779-1797
[5]  Goos R J,Johnson B E.Thiosulfate oxidation by three soils as influenced by temperature[J].Communications in Soil Science and Plant Analysis.2001,32:2841-2849
[6]  朱兆良.中国土壤氮素[M].南京:江苏科学技术出版社.1992:267-281
[7]  胡正义,徐成凯.土壤中的硫与环境质量[A].北京:科学出版社.2002:283-307
[8]  Sullvian D M,Havlin J L.Field microplot and laboratory evaluation of urea hydrolysis inhibition by ammonium thiosulfate[J].Soil Science.1992,153(5):373-381
[9]  杜玲玲.双氰胺的硝化抑制作用及其应用[J].土壤学进展.1994,22(4):27-31
[10]  朱兆良.农田中氮肥的损失与对策[J].土壤与环境.2000,9(1):1-6
[11]  陶运平.硫代硫酸铵对土壤硝化作用的影响[J].土壤学报.1997,34(4):467-473
[12]  鲁如坤.土壤农业化学分析方法[M].北京:中国农业科技出版社.1999

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