What should I pay attention to when spraying herbicides in winter?

What are the characteristics of using herbicides in winter? How to apply herbicide in winter? Also ask experienced netizens to help with the answer. In general, the herbicide release is slow in the low temperature period, the absorption capacity of weeds to the drug decreases, and the control effect decreases. Therefore, the following key points should be mastered in the application of herbicides in winter. 1. Keep an eye on weather medication: it is often accompanied by windy weather after the temperature drop in autumn and winter, which is not conducive to the efficacy of herbicides. Herbicides should be applied during the period of relatively high temperature in sunny days, when the physiological metabolism of weeds is exuberant, which is beneficial to the transmission of drugs in the body and the weeding effect is good. It is difficult to kill weeds, especially the herbicides containing isoproturon, when applied during the overwintering period. when used at low temperatures, it may cause freezing damage to wheat seedlings. 2. Thoughtful and uniform application: strictly control the concentration of pesticide application in order to improve the weeding effect. Do not reduce water consumption at will to ensure that the pesticide is applied thoughtfully and evenly and prevent drug damage. 3. Adding nitrogen fertilizer to improve the control effect: adding appropriate amount of urea and other nitrogen fertilizer can significantly improve the control effect when applying 2-methyl-4-chlorine and other drugs. The mechanism is that urea and other fertilizers can reduce the surface tension and pH value of the herbicide solution and enhance the adhesion.