Foliar fertilizer five best spray method
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The best period: Generally, the foliar fertilizer is sprayed in the vegetable seedling stage, the initial flowering stage or the key period of fertilizer in the middle and late stages to obtain the best effect. Choose the cloudy or sunny morning and the evening spray effect is good, should avoid the scorching sun, the leaf transpiration is large and cause poison, and should be sprayed in time after the rain.
The optimum dosage: spray 50-60 kg of fertilizer solution per acre, and try to increase the atomization degree of the sprayer when applying. Spraying the whole plant, the new leaves and the surface of the leaves should not leak. It is advisable to spray vegetables 2-4 times throughout the growing season.
The best part: the effect of foliar topdressing is related to the speed at which the spraying elements move in the plant. The more mobile elements are nitrogen, potassium, sodium, etc. All the elements that can move but are not mobile are phosphorus. Sulfur, etc.; some of the moving elements are iron, copper, manganese, molybdenum and the like. Elemental fertilizer solutions that cannot be moved or moved are better on new leaves.
The best mixed spray: mixed spraying of various foliar fertilizers, or mixed spraying of fertilizers and pesticides, can play a multi-effect, but the characteristics of the fertilizer and the nature of the pesticide should be clarified first. If the nature is reversed, never spray it. When preparing the mixed spraying solution, it must be stirred evenly. Now it is used now. Generally, a fertilizer is formulated into an aqueous solution, and other fertilizers are directly added to the prepared fertilizer solution according to the dosage. The solution is shaken and then sprayed.