Introduction of the best time for spraying foliar fertilizer on corn!
The best time to apply foliar fertilizer in the early stage of maize growth is 6-7 leaf stage, and the later stage is one week before corn ear. Among them, sunny weather is suitable for spraying foliar fertilizer before 10:00 and after 4: 5pm, if it is cloudy, it can be carried out throughout the day. In addition, the following points should be paid attention to when making foliar fertilizer for corn.
Matters needing attention for corn foliage fertilizer:
1. Mixed use of fertilizer
Adding active agent to spray two or more kinds of fertilizers can improve fertilizer efficiency, and the mixed use of fertilizers and pesticides can also improve work efficiency. But be careful not to mix alkalinity and acidity with reactive fertilizers and pesticides. A small amount of surfactant (a small amount of washing powder can be added) is added to the fertilizer to reduce the surface tension of the fertilizer solution.
two。 Dosage
The amount of spraying liquid of corn foliar fertilizer should be sufficient, and the number of times of foliar fertilization should not be too little. It is best when the fertilizer liquid is about to flow from the leaf surface but not. Generally use 45 kilograms of fertilizer liquid per mu. Even if 1% urea is sprayed, the amount of urea used per mu is no more than 2 kg of urea, sprayed 2-3 times continuously, with an interval of 7-10 days.
3. Kinds
Urea, potassium dihydrogen phosphate, calcium superphosphate, potassium sulfate, plant ash leaching solution and some micro-fertilizers are better for foliar fertilizer application of corn, while chloride-containing, volatile and insoluble fertilizers such as ammonium bicarbonate, ammonium chloride, calcium, magnesium and phosphorus are not suitable for foliar fertilization.
However, I would like to remind you that not all areas can use the same type and amount of foliar fertilizer, but should be considered comprehensively according to land, variety, weather and other factors.
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