Hazardous features:
In the winter wheat production areas in northern North China, there are many types of weeds in wheat fields. In some wheat fields in Hebei and other places after the returning green joints of wheat, the fields began to develop peony, peony, sow wormwood, leeks, lacquer, wolfweed, mia, etc.; they often grow rapidly after turning green. It is necessary to select suitable types of herbicides for the timely prevention and treatment of grass plots in different plots.
The law of occurrence:
In the returning green period of wheat, alfalfa, SVW, leeks, and lacquer wares occur in large quantities. According to the rise of regional temperatures and the growth of winter wheat, the temperature is obviously warmer after wheat turns green, and the weather is clear, the temperature is higher than 10°C, and the weather forecast is in the future. In the case of better weather in a few days, the following herbicides can generally be used:
Tribenuron + fluoxyl
Tribenuron + 2 A 4 Cl
Tribenuron + 2,4-D Butyl Ester
Thiosulfuron + Fluroxypyr
Must pay attention to the weather and wheat growth period. Pay attention not to apply the medicine too early, the temperature is low (below 10°C), the efficacy is not good when the paint is not returned to green, and the wheat is prone to phytotoxicity; do not apply the pesticide too late, the weeds are too large, and the wheat is applied after jointing Pharmacological efficacy is reduced, and the safety of wheat is not good, and it is prone to severe phytotoxicity. After the heading of wheat in the jointing stage, a large number of wheat aphids occurred, which affected the growth of wheat. The application effect of this period decreased, which was unfavorable to the safety of wheat.
It is mainly used for prevention and treatment of Mycoplasma suis pneumonia (also known as local epidemic pneumonia of pigs, commonly known as asthma of pigs), Mycoplasma gallisepticum infection (also known as chronic respiratory disease of chickens), contagious pleuropneumonia of sheep (also known as Mycoplasma ovis pneumonia), Mycoplasma bovis Mastitis and arthritis, Mycoplasma ovis anomastia and arthritis, Mycoplasma suis serositis, arthritis, Mycoplasma avian synovitis, etc.
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