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利用地理信息系统技术,在象山县境内共采集土样123个,分析测试了土壤pH值、有效铜、有效锌、有效铁及有效锰含量。结果表明,象山县土壤呈弱酸性,导致微量元素不易沉淀,使得微量元素有效含量较为丰富;从空间分布来看,有效铜、有效铁与有效锰的空间分布具有一定相似性,均呈“南北高,中部低”的趋势,其原因可能是土地利用类型造成的。但有效锌含量整体较为一致。总体来说,微量元素的含量受施肥方式影响较大,需改善用肥结构,提倡无机肥料和有机肥料配合施用,有助于提高土壤微量元素含量。
Using GIS technology, a total of 123 soil samples were collected in Xiangshan County. Soil pH, available copper, available zinc, available iron and available manganese were analyzed and tested. The results showed that the soils in Xiangshan County showed weak acidity, which resulted in that the trace elements were not easily precipitated, which made the effective content of trace elements rich. According to the spatial distribution, the spatial distribution of available copper, available iron and available manganese were similar, South North High, Central Low "trend, the reason may be caused by the type of land use. However, the overall effective zinc content is more consistent. In general, the content of trace elements is greatly influenced by the way of fertilizing, and the structure of fertilizers needs to be improved to promote the application of inorganic fertilizers and organic fertilizers to improve the content of soil trace elements.