释文：环境变化后原土壤在新环境下进行新的成土过程，致使土壤剖面上反映着不止一种成土内容的土壤。残余土壤大半属此类型。如古老的沼泽土疏干后，在干旱区再行积盐；古红土在海滨沉降后产出沼泽化等。
在氮、磷肥施用的基础上，配施富钾硅多元复合物与施纯硅肥、钾肥、钙镁肥一样，在酸性土壤上具有显著的增产效应；
On the basis of N and P fertilizers, application of the multiple element compound has positive effect on yield in the acid soils.
采用逐步多元线性回归方法和指数模式分析法，进行了高光谱土壤含水率定量反演。
Quantitative inversion model of soil moisture content was carried out by using the stepwise multiple linear regression and exponential analysis.
土壤作为一种由惰性固体、活性固体、溶质、气体以及水组成的多元复合系统，决定了其物理特性实验研究的复杂性。
Due to the fact that soil is the mixture of solid, liquid and air, the difficulties and complexities in studying soil physics may be diverse.
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