磷对草坪的影响

Research progress on the influences of phosphorus on the growth of turf

磷能够使草坪草出苗及成坪时间提前,促进草坪草地上和地下部分生长。在生理特性方面,磷不仅可以促进草坪草叶绿素合成,提高超氧化物歧化酶、过氧化物酶、过氧化氢酶等酶活性,还可以降低丙二醛含量,增强草坪草的抗性;此外,磷在调节植物体内养分代谢、改善土壤理化性质方面也发挥着重要作用。但是,磷的流动性差、利用率低,这往往造成其在生产实践中过量施用,轻则使土壤磷素富集,重则引发磷素点源污染和非点源污染,可能带来土壤重金属积累等环境问题。本文总结了近年来磷在草坪上的应用特点,并归纳出其应用规律,为今后磷肥的合理、高效应用提供参考。

This paper reviewed the influences of phosphorus( P) on turf. Phosphorus can accelerate turf germinating and forming and promote the growth of aboveground and underground. Except with the good effects on physiological property,such as increasing the intracellular chlorophyll content,activating the enzymes of superoxide dismutase( SOD),peroxidase( POD) and catalase( CAT),phosphorus also plays an important role in regulating the nutrition metabolism and improving the physicochemical and biochemical soil properties. However,phosphorus has poor mobility which resulted in low utilization rates and excessive application in the practical production. The over-use of P led to serious environmental problems ranging from the soil phosphorus enrichment to point and non-point source phosphorus pollution which bring heavy metals accumulation in the soil. The present paper described the influences of P on turfgrass growth and summarized P application in turfgrass to provide a reference for the efficient using of P in the future.