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通过对广西来宾市红壤丘陵甘蔗地小尺度的空间分析研究表明,土壤pH空间变异强度弱,其它研究项目养分含量空间变异强度均为中等。土壤pH、交换性镁、有效锰、有效硅的空间分布体现为中等空间相关性,而交换性钙、有效铜、有效锌、有效铁的空间相关性强。研究蔗地土壤pH和中、微量营养元素空间有效变程为138.3m～3105.0m。蔗地土壤空间分布图能反映出土壤各研究项目各自的空间分布特征,并可用于优化施肥决策。
The small-scale spatial analysis of sugarcane fields in red soil hills in Laibin City, Guangxi Province showed that the spatial variability of soil pH was weak and the spatial variability of nutrients in other research projects was medium. Spatial distribution of soil pH, exchangeable magnesium, available manganese and available silicon showed medium spatial correlation, while exchangeable calcium, available copper, available zinc and available iron had strong spatial correlation. The effective pH range of soil pH and medium and micronutrients in sugarcane field was 138.3m ~ 3105.0m. Spatial distribution of soil in sugarcane field can reflect the spatial distribution characteristics of each research item in soil and can be used to optimize fertilization decision.