| GIS支持下的土壤综合肥力指标的定量计算 |
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| 引用本文： | 杜景龙 陈德超 王兆华. GIS支持下的土壤综合肥力指标的定量计算[J]. 中国土壤与肥料, 2005, 0(2): 17-20 |
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| 作者姓名： | 杜景龙 陈德超 王兆华 |
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| 作者单位： | 1. 苏州科技学院城市与环境学系,苏州,215001;华东师范大学河口海岸国家重点实验室,上海,200062
2. 苏州科技学院城市与环境学系,苏州,215001 |
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| 摘 要： | 尝试用数学方法建立一个综合的土壤肥力指标 ,并用地理信息系统 (GIS)方法对计算的结果地图化 ,结果表明 ,该方法计算的土壤综合肥力与土壤的实际状况吻合较好。该研究的另一价值在于通过GIS对田间不同区域土壤肥力实现了定量化显示 ,为施肥管理提供了可靠的依据
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| 关 键 词： | 变量施肥 模型 土壤肥力指数 地理信息系统 |
| 文章编号： | 1002-0616(2005)02-0017-04 |
| 修稿时间： | 2004-04-01 |
Construction and application of a variable fertilizer model based on GIS |
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| DU Jing-long. Construction and application of a variable fertilizer model based on GIS[J]. Soil and Fertilizer Sciences, 2005, 0(2): 17-20 |
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| Authors: | DU Jing-long |
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| Affiliation: | DU Jing-long~ |
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| Abstract: | The fertility of soil is controlled by the concentration of some elements in soil ,such as N ,P ,K etc. ,which can be tested from soil sample.Single element such as N can be crucial to the fertility of soil,but the other elements can't be ignored .I attempt to construct a general model using mathematics to depict the fertility of soil in this paper, on the other hand, I maped the result using GIS .The result shows that it matches very well between the fertility of soil calculated from this model and the fact of the soil.The other value of this study is that the fertility of soil in different area of a field can be displayed quantificationally via GIS.All of these provide a gist for the management of fertilization. |
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| Keywords: | variable input of fertilizer model soil index of fertilizer GIS |
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