Flower bud differentiation promoter for crops

The invention relates to a crop flower-bud differentiation promoter, which consists of urea, zinc sulfate, borax, calcium superphosphate, ferrous sulfate, potassium sulfate, rice vinegar and water, the mixture ratio is: 5-20% of urea, 5-15% of zinc sulfate, 20-30% of borax, 5-10% of calcium superphosphate, 5-15% of ferrous sulfate, 10-15% of potassium sulfate, 0.5-1% of rice vinegar and a proper amount of water .After adopting the above structure, the invention has the following advantages: foliar fertilization by mixed medicaments can timely supplement the nutrition needed by crops, effectively prevent premature senescence of crops, inhibit diseases and increase yield; foliar fertilization is fast in absorption, can make up for the deficiency of slow effect of soil fertilization, relieve the element deficiency disease of crops in time, use less fertilizer, improve fertilizer efficiency, and is safe and pollution-free.