The agent can effectively prevent hundreds of species of annual and perennialweeds.
本药剂能有效地防治近百种一年生及多年生杂草。
2
The results showed that grazing restrained the growth of annual gramineae weeds and perennial gramineae grass, but accelerated the growth of white clover and noxious plants.
In the reclaimed farmland, the weeds dominated by perennial herbs in the initial stage of reclamation are replaced by the weeds dominated by annual herbs after reclamation for some years.