| 不同施肥处理对茭白田土壤中氮素变化动态的影响 |
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| 引用本文： | 赵茜,闻轶,宣岩芳,曹林奎.不同施肥处理对茭白田土壤中氮素变化动态的影响[J].科技通报,2010,26(1):109-114. |
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| 作者姓名： | 赵茜 闻轶 宣岩芳 曹林奎 |
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| 作者单位： | 1. 上海交通大学,农业与生物学院,上海,200240;农业部都市农业(南方)重点实验室,上海,200240
2. 上海交通大学,农业与生物学院,上海,200240 |
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| 基金项目： | 上海市重点学科建设项目(B209) |
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| 摘 要： | 为探索茭白田氮素的流失规律，减少水体富营养化，本文以测坑定位试验为基础，研究了在3种不同施肥处理下黄浦江上游地区茭白田水中氮素变化动态。结果表明。茭白田水中的氮素分布和其它水田作物相类似。各处理茭白田坑面水中氮素形态以NH4^＋-N为主；渗漏水中流失的氮素主要以NO3^--N为主，分别占总氮的化肥处理73．44％。混合肥处理67．62％和有机肥处理53.31％。由剖面水中氮素分布可知，实际生产所施用的氮肥用量远远超过茭白生长所需。通过减少化肥用量而改施有机肥可减少施肥过后由暴雨引起的氮素径流流失和整个施肥期30％的地下水渗漏流失，同时对茭白产量没有显著影响。
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| 关 键 词： | 测坑 茭白田 氮素 动态变化 |
Effects of Different Fertilization Treatments on Dynamic Changes of Nitrogen in the Soil of Water Bamboo Fields |
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| ZHAO Qian,WEN yi,XUAN Yanfang,CAO Linkui.Effects of Different Fertilization Treatments on Dynamic Changes of Nitrogen in the Soil of Water Bamboo Fields[J].Bulletin of Science and Technology,2010,26(1):109-114. |
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| Authors: | ZHAO Qian WEN yi XUAN Yanfang CAO Linkui |
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| Abstract: | In order to explore the rule of nitrogen loss in water bamboo fields and reduce the eutrophication of waters,the paper studied on the dynamic changes of nitrogen in the water of water bamboo fields in the upstream area of Huangpu River based on the lysimeter method.The results showed that NH4+-N was the main nitrogen form in the surface-water,and the main form of nitrogen loss in the leached-water was NO3--N,accounting for CT,73.44%,MT,67.62%,and OT,53.31%,respectively.According to the nitrogen distribution... |
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| Keywords: | lysimeter method water bamboo fields nitrogen dynamic changes |
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