用于公园、运动场、花坛的草坪草同其它植物一样,正常生长的必需元素有氮、磷、钾、钙、镁、硫、铁等,缺乏任何一种元素都会影响草坪草的正常生长,土壤作为营养物质的源泉可部分供给根系必需的营养物质,但草坪草需要量最大的氮、磷、钾,仅靠这种供给还远远不能满足需要,必须通过施肥来加以补充。正确的施肥,可以使草坪草提前返青,延长绿期,增强抗旱、抗寒、抗病和耐践踏的能力。一、建坪前的施 Lawn grass used in parks, playgrounds and flower beds, like other plants, contains nitrogen, phosphorus, potassium, calcium, magnesium, sulfur and iron as essential elements for normal growth. The lack of any of these elements can affect the normal growth of turf grass. Soil As a source of nutrients can supply part of the necessary nutrients for the root system, but turfgrass needs the largest nitrogen, phosphorus and potassium, which is far from enough to meet the needs, must be supplemented by fertilization. Correct fertilization can make turf grass turn green early, extend the green period, and enhance the ability of drought resistance, cold resistance, disease resistance and trampling. First, before building facilities Ping