The use of herbicides in wheat fields has two peak periods, namely, from the end of 10 to the end of February and from the end of February to the end of March. Of course, it is best to weed the wheat field before winter, because 60% to 70% of weeds were planted years ago, so it is difficult to weed after the year, and the effect is not as good as that before. The formula used is benzene plus benzyl (common weed with no cat's eye, no resistance to descurainia sophia), tribenuron-methyl plus clofenuron (common weed with cat's eye, no resistance to descurainia sophia), tribenuron-methyl plus carfentrazone plus dimethyl tetrachlorosodium (common weed with cat's eye, no resistance to descurainia sophia). I hope it helps.