What should be paid attention to in the dispensing of electric sprayer?

The electric sprayer has the advantages of simple structure, convenient operation, few failures, easy maintenance, low price, stable pressure, long operation time, wide application range and so on. There are many herbicide formulations, and different formulations have different formulation methods.

For example, emulsions, water formulations and colloidal suspensions will dissolve and diffuse quickly when exposed to water. For these formulations of herbicides, one-step dilution method can be used, that is, a certain amount of herbicides can be directly added to the sprayer for dilution, and spray after dilution. Shi. This method can be used for 72% Dore emulsion and 90% Henest EC.

Wettable powders, dry suspension emulsions and other dosage forms cannot be prepared by one-step dilution method, but must be prepared by two-step dilution method: the first step is to accurately weigh the herbicide as required, stir with a small amount of water, and make it fully dissolved to form the mother liquor. The second step is to add a certain amount of mother liquor to a certain amount of water, and then spray it after evenly diluting. 75% dry suspoemulsion, 25% fenthiazole wettable powder, etc. must be diluted by this method, and must not be diluted by one-step dilution method.

To prepare the diluent in the sprayer tank, you must first add about 10 cm of water in the tank before adding the medicine or mother liquor slowly to the tank, and then add water to the water level to spray. Never pour medicament or mother liquor into the water tank before adding clean water or after filling the water tank with clean water, because it is difficult to prepare a uniform diluent, which will seriously affect the control effect.

The reason is that the specific gravity of various herbicides is not exactly the same as that of water. For example, the specific gravity of herbicides is larger than that of water. After a period of storage, the herbicides will sink, resulting in a high concentration of the lower drug solution and a small concentration of the upper drug solution, which seriously affects weeding. Effect.

The diluent in the electric sprayer should be added to the water level line of the sprayer, and it must not be filled all at once. If the sprayer medicine box is filled, the liquid medicine in the medicine box is difficult to shake when the sprayer is walking, and the medicine is prone to sink or float, which affects the uniformity of the liquid medicine and affects the weeding effect.

In addition, the liquid medicine is easy to spill from the upper mouth of the medicine box when applying medicine, and drip onto the medicine application personnel, so the liquid medicine in the medicine box must not be too full.