【摘要】 采用野外调查、取样和室内实验分析相结合的方法,研究了梅江盆地白垩系上统叶塘组(Kyt2)紫色岩上土壤物理性质特征和差异,结果表明:叶塘组紫色岩母质发育的土壤粘粒含量低而砂粒含量高,具有容重较大,比重相对偏小,孔隙度不高,自然含水量偏低的特点。从丘顶、丘腰到丘脚,土层逐渐增厚,土壤粘粒含量逐渐增加,砂粒含量逐渐减少,容重递增而比重减小。孔隙度表现出丘顶(丘腰(丘脚的趋势,含水量则表现出丘顶(丘腰(丘脚的趋势。针对情况,提出相应建议以维护紫色土利用的可持续发展。更多还原

【Abstract】 In this paper,by the method of soil sampling and laboratory analysis,it has been studied the differences of soil physical properties of soils developed from purple sandstone(K2yt) in Meijiang Basin.The results showed that the contents of the clay,specific gravity,soil porosity and soil natural moisture capacity are lower in soils developed from K2yt in Meijiang Basin,but the contents of the sand and soil bulk density are higher than that.The contents of clay,thickness of soil layer,soil bulk density and natural moisture capacity in the soils are increased from hilltop to hill foot,but the contents of the sand,specific gravity and soil porosity are decreased.Aiming at the situation,some suggestions were put forward so as to maintain the sustainable development of the soils developed from purple sandstone(K2yt) in Meijiang Basin.更多还原