Consolidation Requisites for Multipurpose Field Based upon Soil Layer Conditions

Based upon the soil layer condition, the farm consolidation requisites for multipurpose fields were investigated. The main results obtained are as follows : （1） The fields for the investigation were selected on the basis of soil types, manner of land use and the effects of field research. The feature of soil layers were discussed in accordance with the physical, water-holding, structural and engineering properties of the soils. （2） Based on the above-mentioned results and the field drainage, fields were grouped into three types. （3） Soil layer conditions for each type are shown concretely. （4） The means of improving muitipurpose fields were discussed on the bases of the soil layer conditions