What should we pay attention to when mixed with foliar fertilizer and pesticides?

Spraying foliar fertilizer is one of the common ways of extra-root topdressing for vegetable farmers. In production, vegetable farmers mostly spray foliar fertilizer and pesticides in order to save trouble. In fact, due to the different properties of various fertilizers and pesticides, unreasonable mixing will affect the effect of fertilizer use and even produce fertilizer damage and drug damage. It is suggested that vegetable farmers should pay attention to the following aspects when mixing foliar fertilizer with pesticides. First of all, it is necessary to ensure the stability of foliar fertilizer and pesticide. Chemical or physical reactions may occur after some foliar fertilizers are mixed with pesticides, which may affect the effectiveness of fertilizers and drugs and even cause fertilizer and drug damage. For example, foliar fertilizers containing boric acid and ferrous sulfate are mostly acidic, while copper preparations such as copper hydroxide are alkaline. If the mixture is easy to react and affect the use effect each other. Therefore, when foliar fertilizer is mixed with pesticides, we should first pay attention to acidity and basicity. It is also necessary to do experiments to observe whether flocculation, precipitation or discoloration, bubbles and other phenomena occur after mixing. If the liquid has bad performance, it is not suitable for mixed use. After mixing, even if the physical properties of the solution are good, we should first carry out a small-scale test to see if it is prone to fertilizer and drug damage, and then use it in a large area. Secondly, attention should be paid to the order in which foliar fertilizers and pesticides are added when mixed. Vegetable farmers use a sufficient amount of water when dispensing, first mix a single dose of liquid, and then use this solution to dilute another single dose. And can not first mix two kinds of single agent, and then dilute with water, so as to avoid adverse reactions. When mixed, the order of adding water to foliar fertilizer and pesticide is usually as follows: foliar fertilizer, wettable powder, suspending agent, water agent and EC are added in turn, and each one is fully stirred and mixed, and then the next one is added. Once again, the liquid should be used now. Although some foliar fertilizers and pesticides have no adverse reactions when they are just mixed, they are easy to produce slow reactions for a long time, resulting in the loss of fertilizer and drug effects and even fertilizer and drug damage.