在这五种参数模型中，MVG模型的误差最大，不能精确描述封丘地区壤土类土壤的颗粒大小分布。
The two-parameter MVG model yields the largest errors among the five models, and therefore is not suitable for describing soil particle-size distributions in Fengqiu area.
该土属红壤亚类，土壤质地以中壤土和重壤土为主，氮、磷及有机质含量中等偏下。
The soil which is mainly composed of middle and heavy clayey loam belongs to sub-laterite.
该土属红壤亚类，土壤质地以中壤土和重壤土为主，氮、磷及有机质含量中等偏下。
The soil which is mainly composed of middle and heavy clayey loam belongs to sub-laterite.
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