Due to the rainy season, the temperature is high and the humidity is high. Therefore, crop diseases and insect pests can easily occur. Spraying various pesticides or applying rain after rainy days, the chemicals will be diluted or washed away by rain, affecting the effect of insecticide and disease, and will also pollute the waters and cause poisoning of humans and animals. China Pesticide Network Xiaobian gives you the trick:
Select systemic pesticides such as omethoate, carbofuran, monocrotophos and other fungicides, and bactericides such as carbendazim, thiophanate, and tricyclazole. These pesticides use more than 60% of the active ingredients after 4-6 hours. It is absorbed by crops, and even after raining for 6 hours, it can still kill insects and kill diseases. The use of quick-acting pesticides such as methamidophos, monocrotophos, and chlorpyrifos in pesticides has a strong contact effect, and the insects can be killed after 1-2 hours. The selection of such pesticides can avoid the weakness of chronic pesticides due to the loss of efficacy in rainy days.
Selection can use pesticide resistance to rain Jinggangmeisu, such as Bordeaux mixture pesticide resistance to rain, i.e. 2-4 hours after rain, still it does not affect the efficacy.
Adhesive adhesives, also known as wetting agents and spreading agents, are added to pesticides as an auxiliary agent for reducing the surface tension of the liquid and making the liquid easy to wet the surface of the crop. The addition of the adhesive to the liquid can increase the ability of the pesticide on the surface of the crop and the insect body, and can reduce the loss and erosion of the chemical by the wind and rain. The commonly used adhesives are leather glue, soap, soybean powder, various pulp waste liquid, Carbocin, polyvinyl alcohol and synthetic laundry detergent.
For the specific use method, taking the synthetic washing powder as an example, taking one-thousandth of the weight of the washing liquid, the water is fully dissolved, and then stirred and sprayed in the liquid. Tips for the pesticide network , not all pesticides can add these adhesives, acidic or slightly acidic pesticides can not add adhesive, because the alkaline adhesive will neutralize the acidity and affect the efficacy. The pesticides that can be mixed with washing powder include "Hyperchloremone", "Acaricide", "Phosphos" and "Bordeol", etc. The pesticides that cannot be mixed are "Desenium" and "Fumeishuang". "Detox", "Tubuzin", "dibromophosphorus" and "stone sulphur mixture".
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