preemergent herbicides中文什么意思

在萌发前施用的除草剂

• herbicide:    n. 【生物化学】除莠剂。 adj. ...
• preemergent:    萌前除莠剂
• herbicides:    除草剂

百科释义

Preemergent herbicides prevent the germination of seeds by inhibiting a key enzyme. In some areas of the world, preemergent herbicides are used to prevent crabgrass from appearing in summer lawns.