粗粒土是指大于0.1毫米颗粒含量较多的土，可分为砾类土和砂类土。砂类土，又称砂质土，指粒径大于2mm颗粒含量不超过全重的50%，而粒径大于0.075mm的颗粒含量超过全重的50%的土。砂质土根据粒组含量不同可分为砾砂、粗砂、中砂、细砂和粉砂。
缺镁常常发生在中雨量或高雨量区的酸性砂质土。
Magnesium deficiency most commonly occurs in acid, sandy soils in areas of moderate to high rainfall.
以夏热冬暖地区富水土壤砂质土为传热介质，进行了水渗流对其传热特性影响的实验模拟研究。
Taking the aqueous sandy soil in hot summer and warm winter area as a heat transfer medium, studies the influence of seepage on heat transfer characteristics of the soil by a simulating experiment.
以耕层土壤质地类别作为制图单位，分为轻粘土、重壤土、中壤土、轻壤土和砂质土五种类型。
The soil were divided into five groups of soil, e, g, light clay, heavy loam, medium loam, light loam and sandy soil, using the group of soil texture of plowed layer as the mapping unit.
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