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| 物元可拓模型在雁江区土壤养分综合评价中的应用 | |
| 引用本文： | 王雅君,冯文兰,泰鱼生,张正健,余春雪.物元可拓模型在雁江区土壤养分综合评价中的应用[J].安徽农业科学,2011,39(22):13469-13472,13480. |
| 作者姓名： | 王雅君 冯文兰 泰鱼生 张正健 余春雪 |
| 作者单位： | 1. 成都信息工程学院资源环境学院,四川成都610225;四川省农科院土壤肥料研究所,四川成都610066 2. 成都信息工程学院资源环境学院,四川成都,610225 3. 四川省农科院土壤肥料研究所,四川成都,610066 |
| 基金项目： | “十一五”国家科技支撑计划项目“西南地区耕地综合治理技术模式研究与示范”(2006BAD05B06) |
| 摘 要： | 利用地统计学和GIS空间分析技术,采用物元可拓模型对四川省雁江区土壤养分进行综合评价。选择土壤pH、有机质、全氮、速效磷、有效钾5项作为土壤养分的评价指标。应用物元可拓理论构建区域土壤养分评价模型,对雁江区土壤养分进行评价,评价结果符合当地实际情况。物元模型可以消除评价过程中人为因素的影响,提高评价精度,是进行土壤养分评价的理想方法。以此方法进行土壤养分的等级分析,建立综合评价模型,确定土壤肥力水平的高低,可宏观上把握一定范围内土壤肥力水平的施肥原则,为实现增产、稳定提供科学依据。 |
| 关 键 词： | 雁江区 物元可拓 土壤养分评价 GIS Kriging插值 |
The Application of Matter-element Extension Model in Yanjiang Soil Nutrient Comprehensive Evaluation |
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| Institution: | WANG Ya-jun et al(College of Resources and Environment,Chengdu University of Information Technology,Chengdu,Sichuan 610225) |
| Abstract: | By using geo-statistics and GIS spatial analysis technology,soil nutrients of Yanjiang Region in Sichuan Province was evaluated with the application of matter-element extension model.pH,organic matter,total nitrogen,rapid available phosphorus,available potassium were selected as soil nutrients evaluating indexes.The evaluating result is accord with the actual situation.Matter-element model can eliminate the effect of artificial factors in evaluation process.At the same time,it is an ideal model of increasing yield and stability to improve the evaluating precision.It is one of the most important methods to grasp the fertilization principle upon the macroscopic in a certain range,which analyze the grade of soil nutrient and construct comprehensive evaluation model to definite the level of the fertility of soil. |
| Keywords: | Yanjiang distihct Matter-element extension Evaluation of soil nutrients GIS Kriging interpolation |
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