mulch

名词 mulch:

1. a protective covering of rotting vegetable matter spread to reduce evaporation and soil erosion

动词 mulch:

1. cover with mulch

mulch

n.（名词）
A protective covering, usually of organic matter such as leaves, straw, or peat, placed around plants to prevent the evaporation of moisture, the freezing of roots, and the growth of weeds.
覆盖层：放在植物周围以防止水份蒸发、根被冻坏和野草生长的保护性覆盖物，通常由有机物质构成，如树叶、草或泥炭等
v.tr.（及物动词）
mulched,mulch.ing,mulch.es
To cover or surround with mulch.
覆盖：用覆盖层覆盖或包围

来源：
Probably from Middle English melsche, molsh [soft]
可能源自 中古英语 melsche, molsh [柔软的]
from Old English melsc [mellow, mild] * see mel-
源自 古英语 melsc [醇香的，柔和的] *参见 mel-