What should we pay attention to when urea is used as foliar fertilizer?
What should we pay attention to when urea is used as foliar fertilizer? Please introduce urea as foliar fertilizer to pay attention to the following points: do not spray it before hot weather or rain, so as to avoid burning seedlings or losing fertilizer. It is appropriate to spray every morning or afternoon, and spray again every 7-10 days. When spraying cereal crops or crops with smooth leaves, add 0.1% adhesive (such as washing powder, washing), etc. Otherwise, the effect is not good. For urea used for spraying, the content of biuret should not be more than 0.5%, otherwise it is easy to damage the leaves. The concentration of urea solution required to be sprayed varies with different types of crops. in general, cereal crops require a spraying concentration of 1.5%-2%, and the concentration is even lower when spraying at flowering stage. The spraying concentration of leafy vegetables and cucumbers is 1%-1.5%, and that of tomatoes is 0.3%. 0.5% is suitable for apple, pear, grape and other fruit trees. Click to get more foliar fertilizer application methods
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What should be paid attention to in foliar fertilization of crops?
What should be paid attention to in foliar fertilization of crops? Please point out that foliar fertilization has the advantages of faster transformation, higher fertilizer use efficiency and better nutrient absorption by root system than soil fertilization. Foliar fertilizer can be divided into a large number of element fertilizers, micro-fertilizers, organic fertilizers, microbial fertilizers, or leaves of photosynthesis enhancers or pesticides.
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How to apply foliar fertilizer to various crops?
How to apply foliar fertilizer to various crops? Please give a classified introduction to the following foliar fertilizer application methods can refer to the following technical methods: 1, melons and fruits. Including all kinds of melons, tomatoes, eggplant, chili, beans and so on. Nitrogen, phosphorus and potassium mixed fertilizers or multi-component compound fertilizers such as potassium dihydrogen phosphate (0.3-0.5%) should be used.
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