First, the dilution method of powder pesticide: general powder pesticide does not need to be diluted when used, but when the crop plant is tall and dense, in order to evenly spray a limited amount of pesticide on the surface of the crop, a certain amount of filler can be added, which will be needed The powdered pesticide is mixed and stirred, so that it is added repeatedly and continuously mixed until the required filling material is completely added. In the dilution process, we must pay attention to safety protection measures to avoid poisoning accidents.
2. Dilution method of wettable powder: Usually, a two-step preparation method is also adopted, that is, a relatively thick mother liquid is first prepared with a small amount of water, thoroughly stirred, and then poured into a vat to perform final dilution. Because the wettable powder is not good in quality, the powders tend to agglomerate together to form larger agglomerates. For example, if they are directly poured into a vat, the coarse granules will not be fully dispersed and will immediately sink into the bottom of the water. difficult. The problem to be noted in the two-step formulation method is that the amount of water used is equal to the total amount of water required, otherwise it will affect the concentration of the drug solution that is expected to be formulated.
Third, the dilution method of liquid pesticides: according to the amount of dilution of the liquid and the size of the activity of the drug. The amount of liquid for prevention and control can be directly diluted, that is, the required water is contained in the prepared dispensing container, and then the quantitative drug is slowly poured into the water, and gently stirred with a small wooden stick to be sprayed. use. If more liquid medicine is needed in large-area control, this requires a two-step preparation method. The specific method is to first dilute the pesticide into a mother liquor with a small amount of water, and then dilute the prepared mother liquor. Pour the proportion into the prepared clean water and stir until it is even.
4. Dilution method of granule pesticide: granule pesticide has low active ingredient, mostly more than 5%. Therefore, granules can be diluted by means of filler and then used. A dry uniform small soil or a homogenous chemical fertilizer can be used as a filler, and the granules and the filler can be thoroughly mixed well when used. However, when using chemical fertilizers as fillers, it is necessary to pay attention to the acidity and alkalinity of pesticides and fertilizers (that is, the acidity and alkalinity of the two must be consistent) to avoid decomposition of pesticides after mixing.
2. Dilution method of wettable powder: Usually, a two-step preparation method is also adopted, that is, a relatively thick mother liquid is first prepared with a small amount of water, thoroughly stirred, and then poured into a vat to perform final dilution. Because the wettable powder is not good in quality, the powders tend to agglomerate together to form larger agglomerates. For example, if they are directly poured into a vat, the coarse granules will not be fully dispersed and will immediately sink into the bottom of the water. difficult. The problem to be noted in the two-step formulation method is that the amount of water used is equal to the total amount of water required, otherwise it will affect the concentration of the drug solution that is expected to be formulated.
Third, the dilution method of liquid pesticides: according to the amount of dilution of the liquid and the size of the activity of the drug. The amount of liquid for prevention and control can be directly diluted, that is, the required water is contained in the prepared dispensing container, and then the quantitative drug is slowly poured into the water, and gently stirred with a small wooden stick to be sprayed. use. If more liquid medicine is needed in large-area control, this requires a two-step preparation method. The specific method is to first dilute the pesticide into a mother liquor with a small amount of water, and then dilute the prepared mother liquor. Pour the proportion into the prepared clean water and stir until it is even.
4. Dilution method of granule pesticide: granule pesticide has low active ingredient, mostly more than 5%. Therefore, granules can be diluted by means of filler and then used. A dry uniform small soil or a homogenous chemical fertilizer can be used as a filler, and the granules and the filler can be thoroughly mixed well when used. However, when using chemical fertilizers as fillers, it is necessary to pay attention to the acidity and alkalinity of pesticides and fertilizers (that is, the acidity and alkalinity of the two must be consistent) to avoid decomposition of pesticides after mixing.
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