The invention discloses a weeding composition containing
propanil and tembotrions, and relates to the field of pesticides. Phenylpropionic acid is added into a three-necked flask, a catalyst and
toluene are added as a
solvent, trichloromethyl
carbonate is ground and added into the three-necked flask, and reduced pressure
distillation is performed to obtain an intermediate A. The problem that when A
pesticide liquid is attached to target
plant leaves, due to the influence of physicochemical properties of the liquid
medicine, the
pesticide rolls off on the surfaces of the
plant leaves, or is separated out through
evaporation and
crystallization on the target surfaces and cannot permeate into
cell walls of resistant barnyard grass and resistant moleplant leaves, and therefore the
pesticide effect is limited is solved. The pesticide liquid can reach the maximum coverage on target
plant leaves within an extremely short time, so that the pesticide liquid can enter a plant body through morphological structures such as plant pores and
skin pores, and the maximum holding capacity and the expansion
diameter of the weeding composition on the leaf surfaces are increased, so that the pesticide effect is improved, and the
fresh weight control effect on barnyard grass and goosegrass is achieved.