| 植烟土壤的pH和中量元素空间分异研究 |
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| 作者姓名： | 董 旭 娄翼来 耿 阳 李 勇 关连珠 |
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| 作者单位： | 董旭,Dong Xu(沈阳农业大学土地与环境学院,沈阳,110161;辽宁省土壤肥料总站,沈阳,110034);娄翼来,耿阳,李勇,关连珠,Lou Yilai,Geng Yang,Li Yong,Guan Lianzhu(沈阳农业大学土地与环境学院,沈阳,110161)
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| 基金项目： | 辽宁省烟草专卖局资助项目? |
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| 摘 要： | 为推进植烟土壤的精细管理与精准施肥,以辽宁昌图烟区为例,采用GIS和地统计学相结合的方法,对其植烟土壤pH和有效态中量元素的空间变异及分布特征进行了分析.研究表明,土壤pH和有效态钙、镁、硫含量的空间变异函数分别为指数、球形、高斯、高斯模型,它们都具有中等的空间相关性,其变异均受地形、土壤类型等结构因素和施肥、管理水平等随机因素共同影响.克里格(Kriging)插值图较为直观的描述了昌图烟区植烟土壤的pH和有效态中量元素的空间分布格局,为昌图烟田的分区管理提供了依据.
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| 关 键 词： | 空间分析 地统计学 植烟土壤 土壤pH 土壤中量元素 |
Spatial variability of tobacco soil pH and middle-elements |
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| Authors: | Dong Xu Lou Yilai Geng Yang Li Yong Guan Lianzhu |
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| Abstract: | In order to promote the accurate management and fertilization of tobacco soil, spatial analysis on tobacco soil pH and middle-element was made by GIS and geostatistics in the tobacco region of Changtu, Liaoning province. The results showed that, the semivariograms for soil pH, available Ca, Mg and S contents were well fitted by exponential, spherical, gaussian and gaussian models, respectively. The four variables all had the moderate spatial correlation, indicating them co-affected by structural factors and random factors such as fertilization and field managements. The spatial distribution pattern of tobacco soil pH and available middle-elements in the tobacco region of Changtu was intuitively characterized by Kriging interpolation, which provided scientific basis for tobacco field management by regions. |
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| Keywords: | GIS Kriging |
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