记者:草坪草对营养的需求怎样?在管理和施肥方面有什么特点?专家:北方绿地所种植的冷季型草坪草,草种都属于禾本科植物,对营养需求的特点是要求氮肥和钾肥多于磷肥。在绿地草坪草的管理方面,既不同于粮食作物,也不同于蔬菜作物,草坪草一旦定植下去,一般要保持多年的定位生长,草坪草有70%～80%的根系铺展于20cm深度的浅层土壤,坪草常年覆盖于土壤表面上,因此,除了建制草坪时 Reporter: turfgrass how the nutritional needs? In the management and fertilization of what characteristics? Experts: the northern greenland planted by cold-season turf grass, grasses belong to gramineous plants, the nutritional needs of the characteristics of the required nitrogen and potassium fertilizer More than phosphate fertilizer. Lawn grass in the green space management, both different from the food crops, but also different from the vegetable crops, turfgrass once colonized, generally to maintain years of positioning and growth, turfgrass 70% to 80% of the roots spread at a shallow depth of 20cm Layers of soil, Ping grass year-round coverage of the soil surface, therefore, except when the lawn built