(1) Stem and leaf treatment agent: the herbicide solution is mixed with water, and the small droplets are evenly sprayed on the plant. The herbicide used in this spraying method is called 

stem and leaf treatment agent, such as cap grass, glyphosate, etc.

(2) Soil treatment agent: the herbicide is evenly sprayed on the soil in a certain thickness of the drug layer, when the weed seed buds, seedlings and their roots are absorbed by contact 

and play a role in killing grass, this role of herbicides, called soil treatment agents, such as Simazine, Pucaojin, fluralin, etc., can be applied by spray method, pouring method, toxic soil 

method.

(3) stem and leaf, soil treatment agent: can be used for stem and leaf treatment, can also be used for soil treatment, such as atrazine.