短語詞組短語Soil -covering 地被物soil -covering machine 覆土機(jī)soil utilization covering 土地利用覆蓋Soil surface covering 地表封閉variation of soil utilization covering 土地利用覆蓋變化the soil -covering plant 常綠地被植物herbaceous soil covering 草皮覆蓋層dead soil covering 枯枝落葉層Living soil covering 地麪生物層;活地被物 返回 soil cover