Huaqiang (BB fertilizer) selects high-quality large-grain nitrogen, phosphorus and potash fertilizer as the main raw materials, and makes scientific preparation according to different crops and different soil types. Moderate and trace elements such as zinc, boron and calcium are added appropriately, and the nutrients are comprehensive, effectively enhancing the crop yield and resistance.Special addition of "NAM" long-acting agent can effectively prolong the absorption efficiency period of crops, which is conducive to cost saving and efficiency increase and nutrient utilization rate improvement.Important statements: