But live roots or weeds might remain below the surface.
但是那些活的根基和杂草可能会遗留在表土之下。
2
Moderate reduction of surface tension or increase of the viscosity of glyphosate could increase inhibition rate of weeds.
适当降低草甘膦药液的表面张力或增加其黏度均可提高其对杂草的防除效果。
3
Some kinds of fish will keep lakes and water-ways clear by eating water weeds. the Chinese grass carp is one. it eats large amounts of water milfoil and other weeds that grow under the water surface.