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针对雾灵山低山区不同土地利用类型的土壤进行采样和分析,研究农田、果园、绿化林、果农间作和未利用地5种土地利用类型对土壤理化性质的影响,以期为雾灵山地区的土地合理利用和水土保持等提供科学依据。结果表明:5种土地利用类型中,绿化林的有机质、全氮、碱解氮、速效钾含量均为最高,而含水量最低;果农间作的有机质、全氮、碱解氮含量最低;未利用地的含水量和容重最高,而速效磷和速效钾含量最低。不同土地利用类型土壤有机质含量随土层深度的增加而减少,而其他土壤养分含量随土层深度的增加其减少量有明显差异。同全国第二次土壤普查养分分级标准相比,各土地利用类型的土壤速效磷和速效钾含量较为丰富,全氮和有机质含量较为缺乏,其中绿化林的各养分均较为丰富。
Aiming at the different types of soil in Wuling Mountain low mountainous area sampling and analysis of the impact of farmland, orchard, afforestation, intercropping and unutilized five kinds of land use types of soil physical and chemical properties, in order to Wuling Mountain area of land is reasonable Use and soil and water conservation to provide scientific basis. The results showed that among the five land use types, the contents of organic matter, total nitrogen, available nitrogen and available potassium in the greening forest were the highest and lowest in the greening forest. The organic matter, total nitrogen and available nitrogen The highest water content and bulk density, while available phosphorus and available potassium content of the lowest. The contents of soil organic matter in different types of land use decreased with the depth of soil, while the contents of other soil nutrients decreased significantly with the depth of soil. Compared with the second national soil nutrient classification standard, soil available phosphorus and available potassium were abundant in all land-use types, and the content of total nitrogen and organic matter was relatively scarce. The nutrients in the forest were rich.