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To summarize the experience of chemical weed control in wheat fields in different regions, different wheat seedlings and wheat rear crops should be distinguished. Different chemical herbicides should be used. The following herbicides can be selected:
Makinoquinoline is 15% clodinafop-propoen wettable powder. It mainly controls a variety of grass weeds. It has a broad spectrum of weed killing, strong permeability, a long duration of weed grass age, and 2~8 leaves after wheat. The weeds in the period can be controlled, but the weeds in the 2 to 4 leaf stage have the best control effect. Amount of 20-30 grams per acre, watered 30 kg spraying.
Funing + but it is chlorsulfuron 70% water dispersible granules plus clodinafop-propargyl 15% microemulsion. It mainly controls annual and perennial grass weeds, and has good adaptability to low temperature and rainfall. It is a newly formulated wheat excellent postemergence herbicide. When the weeds are in the 2 to 4 leaf stage, the two agents are sprayed with 2 bags of water and 30 kg each. If two kinds of medicaments are sprayed with 3 bags of water and 45 kg each, they can spray 5 to 8 leaves of grassy weeds and also spray some broad-leaved weeds.
9% Humus suspension or 10% humming cream can prevent a wide variety of monocotyledonous weeds. Each mu with 6.9% Huma horse suspension 40 ~ 80 ml, or 10% of the 30 ~ 50 ml of hummer cream, watered 30 kg spraying. Spraying time is suitable for the 3 to 5 leaf stage of wheat.
Baijia mixture can prevent a wide variety of broad-leaved weeds, especially hard-to-control weeds such as swine fever and spring bristles. Each mu with a hundred grass enemy water agent 10 ~ 12 ml, plus 20% 2 A 4 chlorine water agent 125 ~ 150 ml, watered 30 kg spraying. The spraying time was from the 3-leaf wheat stage to the jointing stage. The mixture can only be applied to crops where the rice plant is rice.
Pay attention to use weather-free or breezy weather to prevent phytotoxicity on the surrounding crops.
What herbicides can be used after wheat emergence?
In recent years, due to the rapid increase in wheat prices, the comparative benefits of cotton have decreased. Many of the crops in the two mature cotton areas have been changed to full-scale sowing, and the planting volume has been correspondingly increased. Combined with the weakening of the rural labor force, the task of removing weeds in wheat fields has increased. Big. At the same time, due to the gradual application of wheat herbicides in recent years, the resistance of some weeds has been correspondingly increased, which has made it more difficult to control weeds. Recently, some farmers' friends asked because herbicides could not be used because of seasonal stress. Which herbicides can supplement herbicides after wheat emergence?