Meanwhile, granular NP and NK fertilizers are used as fertilizer materials for the development of muti-grade bulk-blended fertilizers, so as to better meet the demand for nutrients of crops and soils.

• 同时应用氮磷、氮钾颗粒肥料作为发展多品种掺混肥料的基础肥料,以更好地满足农作物和土壤对养分的需求。