砂性土的基本特征是耕层土壤以砂粒为主,结构松散,粘结力弱,保水、保肥、保温性差,但质地疏松,通气透水,导热性好,土温变幅大,易于耕作,施肥见效快。由于砂性土的理化性状特殊,故有不少作物不适宜在这类土壤上种植,否则生长差、产量低、品质次。如水稻种在砂土上,虽前期生长快,但后劲不足,并易发生脱肥早衰。 The main characteristic of sandy soil is that the topsoil is mainly composed of grit, with loose structure, weak adhesion, water retention, fertilizer retention, poor insulation, but loose texture, good ventilation and water permeability, good thermal conductivity, large soil temperature variation and easy farming Fertilize quickly. Due to the special physical and chemical properties of sandy soil, many crops are not suitable to be planted on such soils, otherwise poor growth, low yield and inferior quality. Such as rice in the sand, although the early rapid growth, but lack of stamina, and prone to premature premature aging.