The crater retention, texture, microaggregate composition and other physical properties of main soils in north Anhui Province were measured. It has been tounde that the function θ=AS-B could well simulate the soil water-retention curves under condition of medium and low suction, from this the specific water capacities of these soils were derived; and then the specific water capacities were obtained by analytical solution:Cθ=-(dθ/ds)=ABS-(B+1).It is suggested that A·B value might be used to evaluate soil waterretention ability. Function type Ⅰ of S-shape curve (P=1/a2+b2c-lgD) has been used to fit the particle distribution curve and type ⅡN(μ,σ)=a2+b2 lgD to lit the microaggregate distribution curve. The results obtained were satisfactory. Parameters of these functions and their relationship to soil water condition and otherr physical properties are also discussed.
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沈思渊,席承藩.淮北主要土壤持水性能及其与颗粒组成的关系[J].土壤学报,1990,27(1):34-42. Shen Siyuan, Xi Chengfan. SOIL WATER RETENTION AND ITS RELATIONSHIP WITH PARTICLE SIZE DISTRIBUTION IN NORTH ANHUI PROVINCE[J]. Acta Pedologica Sinica,1990,27(1):34-42.