Underground water contamination and movements of nutrients in soil under sand dune cultivation
沙丘耕作下地下水污染与土壤养分迁移
基本信息
- 批准号:09660064
- 负责人:
- 金额:$ 2.11万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:1997
- 资助国家:日本
- 起止时间:1997 至 1998
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The research was carried out to clear the actual condition of groundwater contamination with nitrate and the movement of nitrate in soil under sand dune cultivation.Nitrate concentration of groundwater underfarmlands around Tottori sand dune has been monitored every month form August, 1993. This year, Hojo and Yumigahama sand dune , which are located at central and western part of Tottori prefecture respectively, were added as monitoring site.High concentration of NO_3 in the range of 10-40 mg N/L, was always observed in the western area of Tottori sand dune (Karo district), where was the area of flower and vegetable production, while in the eastern area (Yuyama district), where was the area of bakers garlic production, mostly the concentration was less than 10 mgN/L.It seemed that high NO_3 concentration in the Karo district resulted form heavy application of fertilizer and penetration of waste water discharged from hencoop into soil. In the area of Hojo sand dune, where was the area of chinese yam and grape production with heavy application of fertilize , most of groundwater was polluted with nitrate and the concentration of was in the range of 10-20 mgN/L.In the area of Yumigahama sand dune, where was the area of leek production, mostly the concentration of NO_<3->N was less than 10 mgN/L.As a result of the column experiment on various irrigation conditions by using sand dune soil, it was clarified that the amount of NO_3 leached by irrigation increased in proportion to the volume of irrigation water.It was predicted that the contamination of underground water with nitrate became a more serious situation if the current soil management was continued on the sand dune farmland.
为了弄清沙丘耕作条件下地下水硝酸盐污染的实际情况及硝酸盐在土壤中的迁移规律,从1993年8月起,对鸟取县沙丘周边农田地下水硝酸盐浓度进行了逐月监测。本年度新增了位于鸟取县中西部的北条沙丘和由美滨沙丘作为监测点,在鸟取县西部沙丘观测到NO_3浓度一直较高,在10-40 mg N/L范围内(Karo区)是花卉和蔬菜生产区,(汤山区),那里是面包师大蒜生产的地区,NO_3 ~-浓度大多小于10 mgN/L,Karo地区的3浓度是由于大量施肥和鸡舍排放的废水渗入土壤造成的。在北条沙丘(山药和葡萄生产区),大量施肥,地下水中NO_3 ~--N浓度在10-20 mgN/L之间,大部分受NO_3 ~--N污染;在弓滨沙丘(韭菜生产区),NO_3 ~--N浓度<3->大多小于10 mgN/L。L.利用沙丘土进行了不同灌溉条件下的土柱试验,澄清了NO_的量随着灌溉水量的增加,地下水中硝酸盐的淋溶量也呈增加趋势,如果目前的土壤管理措施不严格,在沙丘农田上继续。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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HONNA Toshimasa其他文献
HONNA Toshimasa的其他文献
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{{ truncateString('HONNA Toshimasa', 18)}}的其他基金
Clarification of soil degradation mechanism in dryland and environmental restoration for sustainable agriculture development
阐明旱地土壤退化机制和环境恢复促进农业可持续发展
- 批准号:
16380050 - 财政年份:2004
- 资助金额:
$ 2.11万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
MEXICO-JAPAN JOINT RESEARCH ON PREVENTING DESERTIFICATION
墨西哥-日本防治荒漠化联合研究
- 批准号:
10044344 - 财政年份:1998
- 资助金额:
$ 2.11万 - 项目类别:
Grant-in-Aid for International Scientific Research.
Genesis and Classification of A-Type Humic Acids in Ando Soils
安藤土壤A型腐植酸的成因及分类
- 批准号:
02660066 - 财政年份:1990
- 资助金额:
$ 2.11万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)