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以广东省韶关市乐昌市乐城街道张溪村香芋产区为研究对象,通过野外调查的方法研究香芋产区的成土条件,并运用层次分析法(AHP),筛选了土壤有机质、有效氮、有效磷和速效钾4个养分指标,研究张溪村香芋产区的土壤养分特征。结果表明,香芋产区地处中亚热带常绿阔叶林区的河谷地带,成土母质以河流冲积物为主,主导成土过程为脱硅富铝化,主要土壤类型为红壤。在4个土壤养分指标中,有机质养分含量属于中等水平;有效氮和有效磷养分含量均属于极丰富水平;速效钾的养分含量属于缺乏水平。总体来看,乐昌市张溪县香芋产区的土壤养分特征整体属于很丰富级别。
Taking the production area of Xiangxi in Zhangxi Village, Lecheng Street, Lechang City, Guangdong Province as the research object, the soil conditions of the production area of Xiangxiang were studied by field investigation. The soil organic matter, Available nitrogen, available phosphorus and available potassium four nutrient indicators, research Xiangxiang Zhangxiang village soil nutrient characteristics. The results show that the production area of taro is located in the valley of the evergreen broad-leaved forest in the subtropical region. The parent material is mainly river alluvium. The dominant soil-forming process is desilication and aluminization, with the main soil type being red soil. In the four soil nutrient indicators, the nutrient content of organic matter belongs to the medium level; the content of available nitrogen and available phosphorus are extremely rich; the content of available potassium is in the deficient level. Overall, the soil nutrient characteristics of Xiangxi yield area in Zhangxi County of Lechang City belong to a very rich level.