Autumn is the time for the emergence of weeds, such as sowing wormwood, leeks, and bromegrass, and it is also a favorable period for carrying out chemical weeding. During this period, weeding fields are less shaded, and the utilization rate of pesticides is high. At the same time, low temperatures are not conducive to the wintering of poisoned weed plants, thereby further increasing the weeding effect and playing a multiplier role. At present, the city's wheat planting work has been completed, the next year weeds will emerge in succession, farmers friends should see the grass field, according to the type and density of weeds, scientific selection of herbicides, timely implementation of weeds on the high density of grass fields.
In wheat fields dominated by sowing wormwood, leeks, and glutinous rice, 72% 2,4-dibutyl butyl ester EC to 40 to 50 ml or 10% tribenuronic-methyl WP to 10 g per mu, and 30 kg of water is evenly sprayed. For fields that may develop drug resistance, an 8-ethylmethoxazole mixture (methylenetetrachlor compounded with valphalin) and a mixture of chlorinated tetrahydrochloride (tetrachloromethane) can be used to uniformly spray 30kg of water.
In wheat fields dominated by swine fever, it can be used to make it long, so that a combination of agents (make it long with dimethyl tetrachloric compounding), in the weeds after spraying the water evenly.
In barley-based wheat fields, 7 to 40% fenofosulfuron-methyl is used to disperse granules 3 to 4 grams, and in barley 2 to 4 leaves, 30 kg of water is evenly sprayed.
In wheat-grass-based wheat fields, use 25% or 50% isopropenol wettable powder to spray the water evenly after sowing to the wheat leaf three-leaf stage.
Note that weeding in autumn should not be too late. When the maximum temperature during the day is lower than 15°C, spraying should be stopped to avoid reducing the efficacy and affecting the control effect. The pesticide application personnel should do a good job of protection and avoid poisoning.
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