Objective  The high effective and broad-spectrum herbicide, 21% Fluoroglycofen-glufosinate ME, was developed and applied in the control of non-arable weeds, and its physical and chemical properties were determined.

Method  The optimal combination method was used to screen out different surfactants to determine the optimal formula. Control effect of 21% Fluoroglycofen-glufosinate ME against non-arable weeds was studied by field tests.

Result  The optimal formula of 21% Fluoroglycofen-glufosinate ME(mass fraction)was: 20% Glufosinate-ammonium, 1% Fluoroglycofenethyl, 7% cyclohexanone, 10% n-butanol, 20% emulsifier(OA-TAPO∶alkyl glucoside∶betaine = 3∶2∶1), and water to made up for 100%. Field test results showed that, 21% Fluoroglycofen-glufosinate ME with dosages of 270- 540 mL/hm² had obvious control effect on non-arable weeds. The coverage control effects against gramineous weeds were 80.41%-83.47%(treatment after 5 d), 92.69%-94.55%(treatment after 10 d), 93.64%-96.04%(treatment after 30 d)and those against broadleaf weeds were 84.44%-88.13%(treatment after 5 d), 95.61%-96.72%(treatment after 10 d), 97.59%-98.45%(treatment after 30 d), respectively. The relative fresh weight control effect could reach 93.65%- 96.09% and 97.37%-98.51%, respectively.

Conclusion  21% Fluoroglycofen-glufosinate ME can broaden the herbicide spectrum and effectively control non-arable weeds. It shows better performance on quick-acting property and continuous effects than those of 20% glufosinate-ammonium SL and 10% fluoroglycofen-ethyl EC.