Abstract: In order to verify the effects of 20% fluroxypyr EC on controlling weeds in wheat fields, 20% fluroxypyr EC for controlling weeds in wheat fields was tested. The results showed that the comprehensive plant control effect of weed control was 88.50%~95.01%、78.72%~85.13% 30 days and 40 days after application, respectively; The comprehensive fresh weight control effect was 85.57%~94.35%.20% fluroxypyr EC can reduce the uptake of nitrogen, phosphorus and potassium by field weeds and maintain soil fertility.

Key words: fluroxypyr, broad-leaved weeds in wheat field, control effects