| 保护地菜田土壤氨挥发损失及影响因素研究 |
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| 引用本文： | 习斌,张继宗,左强,邹国元,翟丽梅,刘宏斌.保护地菜田土壤氨挥发损失及影响因素研究[J].植物营养与肥料学报,2010,16(2):327-333. |
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| 作者姓名： | 习斌 张继宗 左强 邹国元 翟丽梅 刘宏斌 |
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| 作者单位： | 1.中国农业科学院农业资源与农业区划研究所,农业部作物营养与施肥重点开放实验室,北京100081; |
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| 基金项目： | 国家高技术研究发展计划(863计划)，科技部科研项目 |
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| 摘 要： | 保护地过量施用氮肥是造成氮素氨挥发损失的主要原因。本文采用"密闭室间歇通气法"研究了常规施肥、常规+C/N、推荐施肥和单施有机肥4种施肥措施下保护地菜田土壤的氨挥发特性。结果表明:减少施肥量和秸秆还田技术能有效降低氨挥发损失;整个监测周期内,不同处理氨挥发量均较小,常规施肥处理损失量最高,占总施氮量的0.73%,化肥氮对氨挥发的贡献率较大(大于70%),不同处理氨挥发损失量大小顺序为常规施肥常规+C/N推荐施肥单施有机肥;氨挥发监测周期内表层土壤(0—1cm)pH值呈先下降后上升的趋势,下降幅度以常规施肥处理最大,约0.5个pH值单位;土壤pH值、0—1cm土层铵态氮含量与氨挥发速率呈显著正相关(P0.05)。
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| 关 键 词： | 氨挥发 氨挥发速率 保护地 |
| 收稿时间： | 2009-3-2 |
Study on the losing of ammonia volatilization and its influencing factors on the protected vegetable fields' soil |
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| XI Bin,ZHANG Ji-zong,ZUO Qiang,ZOU Guo-yuan,ZHAI Li-mei,LIU Hong-bin.Study on the losing of ammonia volatilization and its influencing factors on the protected vegetable fields'' soil[J].Plant Nutrition and Fertilizer Science,2010,16(2):327-333. |
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| Authors: | XI Bin ZHANG Ji-zong ZUO Qiang ZOU Guo-yuan ZHAI Li-mei LIU Hong-bin |
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| Affiliation: | 1.Agricultural Resource and Regional Planting Institute,CAAS/Key Lab of Crop Nutrition and Fertilization,Ministry of Agricultural,Beijing 100081,China; |
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| Abstract: | Ammonia volatilization is largely due to the excessive input of organic and inorganic nitrogen.Characteristics of ammonia volatilization under different fertilization measures,such as conventional fertilization(CON),conventional fertilization added with wheat straws(CNC),recommend fertilization(REF),and fertilization of organic manure only(OM),was studied by means of intermittent ventilation chamber in the protected vegetable field.Results show that ammonia volatilization is significantly decreased by reduc... |
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| Keywords: | ammonia volatilization ammonia volatilization rate facility soil |
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