加热保温技术对冬季草坪草生长影响的研究

 冬季对北方运动场草坪进行了加热保温技术处理。结果表明,在严寒的冬季（12月至翌年2月）各处理可以使草坪地表温度提高6～9 ℃,草坪草光合速率可以保持在14 CO₂ mg／(dm²·h)以上,增温保绿效果极其显著(P<0.01),各处理的色泽均达到3级以上,草坪不结冻,保持青绿,可以满足每月进行1～2次足球比赛的要求。单一覆膜处理经济有效,简单易行,投资后的使用成本仅为4.90元/m²,应是北方运动场草坪冬季加热保温技术中的首选方法。水加热（太阳能）+覆膜技术处理虽增温保绿效果好,但投资后的使用成本较高,为14.69元/m²;电加热+覆膜处理投资后的使用成本为8.97元/m².

Effect on Turfgrass Growth in Winter by Warmed Turfground Techniques

Sports turfs in the North China were warmed by the means of artificial heating for the root zone during the winter season (December to February). The results show that the turfground temperature in all the treatments were significantly higher than control and atmosphere(P<0.01). That was 6～9 ℃ in average higher than atmosphere during December to February. The turfground temperature was higher by the method of heating water(sun energy) with plastic cover than single plastic cover and electric cables with plastic cover. The plastic cover which was removed for 12 h/week(8-20 o'clock) appeared better effects for warming turfground than no removing and 12 h/d removing treatments. The single plastic cover treatment was the best method for warming turfground in winter for its efficiency,simple operation and economy with the using cost of 4.90 yun/m². As for turfground temperature, the heating water(by sun energy) with plastic cover was best treatment, but the using cost was also the highest (14.69 yun/m²). The using cost of electric cables with plastic cover treatment was 8.97 yun/m².