Recently, with the development of agriculture water efficient, integral control of water and fertilization is gradually becomes a new scientific application method. As for zinc fertilizer, zinc is absorbed by crop roots mainly in ionic form. Therefore, farmers usually dissolve zinc fertilizer in water, through the scientific application methods, send zinc ion into crops root directly, and decrease the soil absorb. Zinc sulfate monohydrate and zinc sulfate heptahydrate are belongs to zinc fertilizer, with its good solubility, this zinc fertilizer is very suitable for water and fertilization. [Read More]