Good chemical weeding effect in winter

In wheat production, most farmers are accustomed to using wheat field herbicides in the spring, when the grass is too old, the weeds are thick and thick, and the drug resistance is enhanced. In addition, the degree of canopy closure in wheat fields is increased, and the weeding dose is large. Workers are also expensive and the control effect is unsatisfactory, and it is easy to cause harm to the crops after the crops, such as peanuts and cotton. At present, the main component of herbicides used in wheat fields is tribenuron-methyl. If the weather in spring is drier and less rain, tribenzurolon sprayed on the soil surface will remain in the soil and cannot be decomposed in time. After the exhumation of crops, the tribenuron-methyl will continue to exert its efficacy, which will bring harm to the crops after the crops are affected. The normal growth and development of loquat crops eventually led to a reduction in crop yields. In winter, as long as the temperature and humidity are appropriate, weeds in wheat fields will begin to grow out after the wheat emerges. At this time, the weeds are young and delicate, the waxy layer is thin, the canopy density of the wheat field is small, the exposed area of ​​the weeds is large, and the drug resistance is poor. At this time, the wheat is removed, and the sprayed liquid is in contact with the weeds. Large, it is beneficial to weeds to absorb more agents and can ensure weeding effect. Furthermore, in addition to winterization, even if herbicides have a longer residual period in the soil, they will not have a major impact on the crops that fall on the ground. Therefore, the chemical weeding in winter is better than the chemical weeding in spring.