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What technical tips should be mastered for foliar fertilization?
1. First of all, we must choose the right fertilizer. Foliar fertilization is mainly for the supply of trace elements, but a large amount of combination with trace elements is beneficial to the absorption and utilization of nutrients. Specific determination of which fertilizer type depends on the demand of the crop, the soil's restricted nutrient types, etc., in order to improve the pertinence of foliar fertilization. Do not choose the kind of full-fledged rehydration, which is expensive and non-targeting, but it is not effective. For example, to solve the problem of chlorosis in new leaves of northern peanuts, it is necessary to spray iron; to solve the problem of increasing 1000-grain weight during the grain filling period of winter wheat, spray urea and potassium dihydrogen phosphate.
2. The concentration of leaf fertilizer should be well mastered. If the concentration is too high, it will damage the leaves, but it will reduce the fertilizer efficiency; if the concentration is too low, it will not work. Suitable concentrations vary by element and crop type.
3. The time and climatic conditions for spraying fertilizer should be selected. It is generally necessary to avoid noon, before 10 o'clock in the morning and after 4 o'clock in the evening. Also avoid the rain.
4 . Pay attention to the spraying area. Leaves, stems, flowers, and fruits can be sprayed, but the concentration should not be too high when spraying flowers and buds; spray the leaves, spray both sides, and the number of vents on the back is more . Â
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