| 湖北省粮食主产区土壤养分的空间变异性研究 |
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| 引用本文： | 刘冬碧,熊桂云,陈防,余延丰,张继铭,范先鹏,杨利.湖北省粮食主产区土壤养分的空间变异性研究[J].湖北农业科学,2007,46(6):904-907. |
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| 作者姓名： | 刘冬碧 熊桂云 陈防 余延丰 张继铭 范先鹏 杨利 |
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| 作者单位： | 1. 湖北省农业科学院植保土肥研究所,武汉,430064
2. 中国科学院武汉植物园,武汉,430074 |
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| 基金项目： | 国家科技攻关计划
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北美/加拿大钾磷肥研究所(PPI/PPIC)NMS项目 |
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| 摘 要： | 利用"网格"取样、土壤养分状况系统研究法和GIS技术探讨了湖北省粮食主产区3个自然村土壤养分的空间变异特性.结果表明,pH值和有机质相对稳定,在整个研究区域其变异较小,近似于正态分布,施肥元素的变异则较大,表现出明显的负偏峰分布特征;土壤有效P、K和Zn等重要施肥元素的空间变异主要是受土壤利用方式和施肥水平等随机因素的影响,同时其缺乏又更多地出现在水田中.
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| 关 键 词： | 土壤养分 一般变异特性 空间分布特征 |
| 文章编号： | 0439-8114（2007）06-0904-03 |
| 收稿时间： | 2007-07-15 |
| 修稿时间： | 2007年7月15日 |
Spatial Variability of Soil Nutrients and Rational Sampling in Grain Crop Regions of Hubei |
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| LIU Dong-bi,XIONG Gui-yun,ZHANG Ji-ming,YU Yan-feng,CHEN Fang,FAN Xian-peng,YANG Li.Spatial Variability of Soil Nutrients and Rational Sampling in Grain Crop Regions of Hubei[J].Hubei Agricultural Sciences,2007,46(6):904-907. |
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| Authors: | LIU Dong-bi XIONG Gui-yun ZHANG Ji-ming YU Yan-feng CHEN Fang FAN Xian-peng YANG Li |
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| Abstract: | Soil nutrients spatial variability in 3 natural villages from different grain crop regions of Hubei were studied by using grid sampling,ASI method and GIS techniques.Results showed that:(1) Soil pH values and organic matter content were relatively stable soil properties.In the area studied their spatial variability was rather small and showed almost normal distribution.As the fertilization soil elements,their spatial variability was quite great and showed obviously negative distribution.(2)The spatial variability of the fertilization elements(soil available P,K and Zn) was mainly influenced by random factors,such as crop type and fertilization levels.Paddy soils were more easily deficient in available P,K and Zn. |
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| Keywords: | soil nutrients general variability spatial distribution characteristics |
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