The paper dealed with the water retention capability of soil and the physical properties of soil water in dry red soils.

研究了我国燥红土的土壤持水性和土壤水分物理性。

youdao

The previous researches on purple soils neglected the properties of rock fragments, the distributions of rock fragments, and the influence on soil physical and chemical properties.

以往对紫色土的各种研究都忽略土壤砾石的性质和空间分布，以及对土壤物理和化学性质的影响。

youdao

Based on indoor tests, the physical properties, stress-strain relationship, intensity behaviors and compressibility of the modified soil with cement are studied in the paper.

通过室内试验，对水泥改良土的物理性质、应力-应变关系、强度特性、压缩特性进行了研究。

youdao

They also will study chemical and physical properties of the soil samples with a method called infrared spectroscopy.

VOA: special.2009.01.20

When the next food crop is planted, it benefits from the nutrients and improved physical properties of the soil that the trees have provided.

ECONOMIST: A new twist on an old idea is improving farm yields in Africa