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研究不同泥炭施用量对砂基运动场坪床根层基质孔隙度、渗透性、pH值等理化性状的影响,以及对草坪草再生速度、成坪时间、生物量等的影响,探讨泥炭的改良效果及合理的施用量。结果表明:(1)泥炭施入能够使坪床基质的渗透性降低,总孔隙度和毛管孔隙度增大,毛管孔隙和非毛管孔隙的比例趋于平衡,有利于提高坪床保水能力和通气性。(2)泥炭有机质含量高,能改善坪床的养分供应状况,增强草坪草再生能力,缩短成坪时间,提高草坪质量。(3)由于泥炭的pH值偏低,过多施用会使坪床基质偏酸,不利于草坪草生长,因此应控制其用量,适宜的用量为10%~15%。
The effects of different peat application rates on the physico-chemical properties such as porosity, permeability and pH value of sand matrix substrate were studied, as well as the effects of turfgrass regeneration speed, forming time and biomass on the improvement of peat And a reasonable amount of application. The results showed that: (1) Peat application decreased the permeability of the subsoil, the total porosity and capillary porosity increased, and the ratio of capillary pores and non-capillary pores tended to balance, which could improve the water retention capacity and aeration Sex. (2) The peat organic matter content is high, which can improve the nutrient supply status of the turf bed, enhance the turfgrass regeneration capacity, shorten the time for the turfgrass, and improve the quality of the turfgrass. (3) Due to the low pH value of peat, too much application will make the acidity of the bed and the substrate is not conducive to the growth of turfgrass. Therefore, the dosage should be controlled at 10% ~ 15%.