一、三精肥料(叶绿精、开花精、甜果精)为从德国进口的高浓度高效阶段性复合肥,不仅含有适当比例的氮、磷、钾三种大量元素,而且还含有大量螯合态的微量元素,全面均衡地补充植物营养,促进作物茎叶生长、花芽分化、果实发育,有效地提高农产品产量和品质: First, the three refined fertilizer (leaf green fine, flowering fine, sweet fruit refined) imported from Germany for the high concentration of high efficiency phase compound fertilizer, not only contains the appropriate proportion of nitrogen, phosphorus and potassium three kinds of large elements, but also contains a large number of chelates Combine the trace elements, a comprehensive and balanced replenishment of plant nutrition and promote crop stem and leaf growth, flower bud differentiation, fruit development, effectively improve the yield and quality of agricultural products: