At present, with the rise in temperature, wheat gradually enters the green period, which is the most favorable time to control weeds in wheat fields. Then what herbicide is the best herbicide for wheat field in our county? In view of the variety of herbicides on the market and the occurrence and development of weeds in wheat fields in our county, combined with the results of trials and demonstrations in recent years, weeds, broadleaf weeds, etc It is best to control 15% wheat wangwang (thifensulfuron) wettable powder. It is an ultra-efficient and safe leaf and stem treatment herbicide in wheat fields. It can kill a wide range of annual broad-leaved weeds. With less dosage, moderate validity period, wide application period, rapid decomposition in the soil, no effect on peanuts, soybeans, and corn of the next crop after 30 days of application. Use 10 g per acre for the weeds at the 2-4 leaf stage. 1 bag) Watered 30-50 kg uniform spray best. Although the herbicide containing tribenuron-methyl is low in cost, it has a short service life, and the residual period is as long as 60 days or more. The use of the herbicide is slightly inappropriate, and it has a great influence on the rear-row planting crops. Therefore, it should be used with caution, as far as possible. Use before the end of the month, and do not arbitrarily increase the amount. For the control of grassy weeds mainly including wild oats and aphrodisiacs, it is best to use 6.9% humophilic emulsion or 7.5% jinma water emulsion, and then apply 60-70 ml per acre to the second leaf stage of weeds. , watering 30-50 kg evenly spray. For the wheat fields mixed with broadleaf weeds and grass weeds, the above two herbicides can be mixed and used.
Due to the high technical requirements of herbicides, it is important to use accurate doses when using them. It is necessary to use a secondary dilution method for the formulation. When applying pesticides, it is necessary to select appropriate time, wind direction and temperature. Generally, it should be 9 am. Afterwards, the weather is fine without wind, and the best spraying effect is at a temperature of 10-20Â°C.
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