土壤颗粒之间存在的间隙,叫做土壤孔隙。土壤孔隙的形状非常复杂,很不规则,它是在土壤形成过程中逐渐发展起来的。土壤孔隙与土壤肥力有密切关系,它是土壤中的水分、空气重要通道和贮存场所。它决定土壤的保水,透水、通气等性能。土壤孔隙的体积占整个土壤体积的百分数,称为土壤孔隙度,又叫总孔隙度。一般土壤孔隙度约在30-60%之间。对农业生产来说,在50%左右或稍大于50%为 The gap between soil particles, called soil pores. The shape of soil pores is very complicated and irregular. It is gradually developed in the soil formation process. Soil porosity and soil fertility are closely related, it is the soil moisture, air, an important channel and storage sites. It determines the soil water, water, ventilation and other properties. The volume of soil pore volume of the entire soil volume percentage, known as soil porosity, also known as total porosity. The average soil porosity of about 30-60%. For agricultural production, about 50% or slightly more than 50% for