Each acre of wheat field wheat can be used with 30 ml of 3-methyldisulfuron EC, or 60-70 ml of 6.9 quinoxalin emulsion, or 60-80 ml of 5-pinoxazolin EC, or 20-30g of 15-propargyl wettable powder mixed with 30kg of water for spray control. If the wheat is jointed, do not use herbicides.