mulchn. 覆蓋物、護根、根籬vt. 鋪護蓋物、做護根學術名詞覆蓋物:植物學、生態學、水利工程學護蓋層:高分子材料護蓋物:土木工程敷蓋:土壤學英文釋義a protective covering of rotting vegetable matter spread to reduce evaporation and soil erosioncover with mulch