1. The application time of foliar fertilizer should be appropriate
In order to prolong the time that the leaf surface is wetted by the fertilizer solution, which is conducive to the absorption of nutrients, the time of spraying the leaf fertilizer is best selected around a clear and windless evening. This can delay the air-drying speed of the leaf surface, which is conducive to the penetration of ions into the blade. Spraying should be uniform, so that the front of the blade is completely wet. In case of heavy rain after spraying foliar fertilizer, it should be sprayed again.
Second, the concentration of foliar fertilizer should be appropriate
Because the foliar fertilizer is sprayed directly on the top of the crop, the buffer effect of the crop on the fertilizer is very small. Therefore, we must master the spray concentration of foliar fertilizer. If the concentration is too low, the amount of nutrient elements contacted by the crops is small, and the use effect is not obvious; if the concentration is too high, it will often burn the leaves and cause fat damage. The concentration of spraying the same foliar fertilizer on different crops is not the same, and it should be determined according to the type of crops.
3. The acidity of the foliar fertilizer should be suitable
Nutrient elements have different states of existence under different pH levels. To maximize the benefits of fertilizers, there must be a suitable range of acidity, generally requiring a pH of 5 to 8, the pH is too high or too low, in addition to the absorption of nutrients is affected, it will also cause harm to crops.
Fourth, add additives
When the flight controller uses the plant protection drone to spray the fertilizer solution on the leaves, the appropriate addition of additives can improve the adhesion of the fertilizer solution on the plant leaves and promote the absorption of fertilizer.
5. After spraying operation
After the spraying operation of the plant protection drone, please wash your hands and face with soap immediately, and work with the flight controller to clean the plant protection drone and spraying device.
6. When the operation is finished cleaning
After the spraying of the plant protection drone is completed, the residual fertilizer liquid in the cleaning medicine box and the spraying device should be properly treated, and the residual fertilizer liquid in the piping should also be treated safely.
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