| 王荣辉，艾绍英，李盟军，唐明灯，宁建凤，罗英健，余丹妮.氮肥形态对菜地土壤N2O 排放
与小白菜产量的影响[J].广东农业科学,2015,42(20):59-62 |
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氮肥形态对菜地土壤N2O 排放
与小白菜产量的影响 |
| Influences of nitrogen forms on soil NO2emissions and vegetable yield |
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| DOI： |
| 中文关键词: 氮肥形态 N2O 排放 蔬菜产量 |
| 英文关键词: nitrogen form N2O emissions vegetable yield |
| 基金项目:广东省低碳发展专项资金（ 粤财工
［2012］272 号）；广东省农业科学院院长基金（201526）；
国家公益性行业（农业）科研专项（201003014-02-04） |
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| 摘要点击次数: 1387 |
| 全文下载次数: 499 |
| 中文摘要: |
| 为了明确不同形态氮肥施用对广东菜地土壤N2O 排放和蔬菜产量的影响，利用盆栽试验，用密
闭式静态箱法，对施用酰胺态氮（尿素）、铵态氮（硫酸铵）、硝态氮（硝酸钙）和对照菜地土壤N2O 排放进
行连续监测，并对蔬菜产量、养分含量等进行分析。结果表明：施用不同形态氮肥明显增加了菜地土壤N2O 排
放通量，各处理排放通量高峰出现在施肥后2 d 和3 d，从大到小依次为施酰胺态氮0.22 mg/m2·h、施硝态氮
0.18 mg/m2·h、施铵态氮0.14 mg/m2·h、对照0.11 mg/m2·h，施肥后6 d 排放通量与对照持平。施用不同形态
氮肥与对照比，显著提高了蔬菜干物质积累量、植株氮含量，但各形态氮肥处理干物质积累量之间无显著差
异。说明施用铵态氮（硫酸铵）能够有效降低N2O 排放，同时保证蔬菜产量。 |
| 英文摘要: |
| A plot experiment was conducted to determine different nitrogen forms，including urea，calcium nitrate
and ammonium sulfated，on N2O emissions，vegetable yield and nitrate concentration. The results showed that applying
different forms of nitrogen fertilizer could increase N2O emissions，the peak of N2O emissions appeared in 2-3 days after
fertilizer，the peak of N2O emissions in treatments of urea，calcium nitrate and ammonium sulfated were 0.22，0.18 and
0.14 mg/m2·h，respectively. After 6 days，N2O emissions decreased to the control level. The dry matter accumulation
and vegetable nitrogen content were significantly different between the control and the treatments，but there was no
remarkable difference in dry matter accumulation among different nitrogen form treatments. The results indicated that the
application of ammonium nitrogen（ammonium sulfate）could effectively reduce N2O emissions，while ensure the yield
of vegetable. |
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