CN+B is 100% soluble in water and is a boron-containing calcium nitrate water-soluble fertilizer. Boron can promote the absorption of calcium. At the same time, calcium and boron are supplemented, the fertilizer efficiency is faster and the utilization rate is higher. It is a neutral fertilizer, suitable for a variety of soils. It can adjust soil pH, improve soil aggregate structure, reduce soil compaction, and reduce soil pollution. When planting economic crops, flowers, fruits, vegetables and other crops, the fertilizer can prolong the flowering period, promote the normal growth of roots, stems, and leaves, ensure the bright color of the fruit, and increase the sugar content of the fruit. It can prolong the functional period of leaves and the growth period of plants, and delay crop senescence. It can improve the storage tolerance of fruits, increase the fresh-keeping time of fruits and vegetables, and endure storage and transportation.