| 亚热带喀斯特地区土壤钾养分空间变化的评价及其施肥建议 |
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| 引用本文： | 谭宏伟,周柳强,谢如林,黄美福.亚热带喀斯特地区土壤钾养分空间变化的评价及其施肥建议[J].广西农业科学,2005,36(5):434-438. |
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| 作者姓名： | 谭宏伟 周柳强 谢如林 黄美福 |
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| 作者单位： | 广西农科院土壤肥料研究所,南宁,530007 |
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| 摘 要： | 为了提高肥料的利用率，并建立稳定高产的农田，更有效地促进利用农业土地和肥料资源，在广西喀斯特地区的一个村庄里，通过采用“3S”技术（全球定位系统（GPS）、遥感（RS）、地理信息系统（GIS））获得该村土壤与肥料信息系统，并结合当地条件，对该村土壤养分平衡管理技术进行研究。研究结果表明，近20年来，农田土壤养分状况有了明显的改变，在2000年，两种土壤类型的土壤有效钾含量和作物产量都比1981年有了明显的提高；通过“3S”技术获得了水稻和甘蔗土壤钾养分的施肥推荐方法，有利于喀斯特地区农民合理施肥。
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| 关 键 词： | 空间变化 土壤养分 评价 亚热带喀斯特地区 |
| 文章编号： | 1002-8161（2005）05-0434-05 |
| 收稿时间： | 2005-05-27 |
Assessment of some spatial variation in soil potassium nutrient and recommendation for fertilization in Karst region of the sub-tropics |
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| TAN Hong-wei,ZHOU Liu-qiang,XIE Ru-lin,HUANG Mei-fu.Assessment of some spatial variation in soil potassium nutrient and recommendation for fertilization in Karst region of the sub-tropics[J].Guangxi Agricultural Sciences,2005,36(5):434-438. |
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| Authors: | TAN Hong-wei ZHOU Liu-qiang XIE Ru-lin HUANG Mei-fu |
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| Institution: | Institute of Soil and Fertilizer, Guangxi Academy of Agricultural Sciences, Nanning 530007 |
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| Abstract: | The project objective was to study the techniques of balanced soil nutrients management at a village in line with the local conditions based on the soil and fertilizer information system obtained by "3S"(GPS, GIS, RS) techniques, in order to enhance the fertilizer usage and establish agricultural field with sustainable and high yield, improve and use agricultural land and fertilizer resources more effectively. The results indicated that agricultural field nutrient situation had been changed obviously during past 20 years. The soil available K content of two soil types was increased clearly and crops yield in 2000 were obviously higher than that in 1981, and the recommendation for fertilization of soil potassium nutrient for rice and sugarcane were obtained and in favour of applying the fertilizer suitably by farmers in Karst area. |
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| Keywords: | spatial variation soil nutrient assessment Karst area of the sub-tropics |
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