| 用原状土柱研究太湖地区稻麦轮作农田养分淋溶量 |
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| 引用本文： | 张静.用原状土柱研究太湖地区稻麦轮作农田养分淋溶量[J].土壤,2008,40(4):591-595. |
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| 作者姓名： | 张静 |
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| 作者单位： | 1. 中国科学院南京土壤研究所常熟农业生态国家实验站,南京,210008;中国科学院研究生院,北京,100049
2. 中国科学院南京土壤研究所常熟农业生态国家实验站,南京,210008 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)，国家科技支撑计划 |
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| 摘 要： | 采用原状模拟土柱,对太湖地区不同施肥水平下稻麦轮作农田NH4 -N、N03--N 和TP的淋溶量进行了研究.初步结果表明:麦田NH4 -N、NO3--N 和TP的淋溶量分别为0.36～0.64、2.74-16.42和0.05-0.19kg/hm2,各占化肥施用量的0.2%～0.4%、4.8%～8.1%和0.2%～0.7%;稻田NH4 -N、N03--N和TP的淋溶量分别为0.36～1.04、0.86～3.01和0.24～1.17kg/hm2,各占化肥施用量的0.2%～0.4%、0.6%～1.7%和0.8%～8.2%.猪粪能增加养分淋溶量,尤其显著促进了P素向下迁移;秸秆减少麦季土壤无机N的淋溶损失.
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| 关 键 词： | 原状土柱 稻麦轮作 养分淋溶量 太湖流域 |
On Nutrient Leaching Amount of Rice-Wheat Rotation Field with Monolith Lysimeter in Taihu Lake Area |
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| ZHANG Jing.On Nutrient Leaching Amount of Rice-Wheat Rotation Field with Monolith Lysimeter in Taihu Lake Area[J].Soils,2008,40(4):591-595. |
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| Authors: | ZHANG Jing |
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| Institution: | Changshu National Agroecologgical Expriment Station (Institute of Soil Science, Chinese Academy of Sciences) |
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| Abstract: | An experiment using monolith lysimeter including different fertilization levels was conducted to study the nutrient leaching amount of rice-wheat rotation field in Taihu Lake area. Results showed that the amount of NH4+-N, NO3--N and TP leaching in wheat season were 0.36 ~ 0.64, 2.74 ~ 16.42 and 0.05 ~ 0.19 kg/hm2, respectively, accounting for 0.2% ~ 0.4%, 4.8% ~ 8.1% and 0.2% ~ 0.7% of applied fertilizer; the amount of leaching in rice season were 0.36 ~ 1.04, 0.86 ~ 3.01 and 0.24 ~ 1.17 kg/hm2, respectively, accounting for 0.2% ~ 0.4%, 0.6% ~ 1.7% and 0.8% ~ 8.2%. Compared to using fertilizer only, manure combined with fertilizer increased the nutrient leaching, particularly for phosphorus, while straw combined fertilizer reduced the nitrogen leaching from wheat field. |
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| Keywords: | Lysimeter Rice-wheat rotation Nutrient leaching Taihu Lake area |
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