In winter, there are many diseases and spraying times in the shed. In order to reduce the spraying times and reduce the labor intensity, many vegetable farmers mix a variety of pesticides every time. There are too many kinds of pesticides, and problems are easy to occur when mixing, which requires special attention. So, what should be paid attention to when mixing pesticides?

First, the mixing sequence of pesticides should be accurate. Most vegetable farmers do not know which pesticide should be added first when mixing pesticides. Sometimes the foliar fertilizer is added first, sometimes the emulsifiable oil is added first, and sometimes the wettable powder is added first. It is unreasonable to add which one is picked up. Many formulated pesticides are precipitated in this way.

The mixing order of foliar fertilizer and pesticide is generally: foliar fertilizer, wettable powder, suspending agent, water agent and emulsifiable oil are added in order, and each one is fully mixed, and then the next one is added.

The second is to add water first and then add chemicals for secondary dilution. At present, when many vegetable farmers mix pesticides, they add all pesticides into the spray and then dilute them with water. This is wrong.

The mixture of pesticides is not simply mixed together. When mixing, you can first add half a bucket of water into the spray, and then mix it after adding the first pesticide; Then, dilute the remaining pesticide with a plastic bottle, pour it into the spray after dilution, mix well, and so on.

Third, spray immediately after dispensing. Most of the time, vegetable farmers usually mix the medicine at home and then transport it to the shed for spraying. Most of the time, the medicine has been prepared for several hours. Although the liquid does not respond when it is just prepared, it does not mean that it can be left at will for a long time, otherwise it is easy to produce a slow reaction and gradually reduce the efficacy.