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.
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 amount of nitrogen leaching in sandy loam soil exceeded in clay loam soil.
砂壤土上氮素的淋失量明显高于粘壤土。
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