模拟鸟巢式体育场对高羊茅草坪夏季生长的影响

通过模拟鸟巢式体育场环形结构来研究其对场内草坪草生长的影响，于2006年和2007年夏季分别测定了模拟鸟巢式体育场内外的温度差异及其对高羊茅Festuca arundinacea草坪的形态指标和生理指标的影响。结果表明：模拟鸟巢式体育场内的温度明显高于场外，夏季最高日气温场内比场外分别高出4.5和5.2 ℃，冠层温度分别高出6.2和5.8 ℃，10 cm处地温分别高出2.7和2.6 ℃。场内温度的增高严重影响了高羊茅的生长，场内草坪草的生长量和目测质量分别从7月20/21日和7月23/24日起均显著低于场外对照，目测质量在8月8/9日下降到可接受草坪质量(6.0)以下；场内草坪草叶片的叶绿素含量从7月28/29日起显著低于场外对照，但叶片的相对电导率则从8月6日起显著高于场外对照，叶片内的丙二醛含量则有一半左右的时间显著高于场外对照。表明由鸟巢式体育场环形结构所造成的逆境严重抑制了场内草坪草的生长。

Effects of simulated nest type stadium on growth of tall fescue in summer

 A simulated annular structure of nest type stadium was built to study its effects on the growth of tall fescue (Festuca arundinacea) in summer. Thermometric difference inside and outside of stadium, morphological and physiological parameters were measured in the year 2006 and 2007 respectively. The results showed that temperature in the stadium was significantly higher than the outside control. On the hottest day, the increase of air temperature was 4.5 ℃ and 5.2 ℃, canopy temperature increase was 6.2 ℃ and 5.8 ℃, and the increase of rootzone temperature at 10 cm depth was 2.7 ℃ and 2.6 ℃ respectively compared to the outside control. The increase of the temperatures in the stadium dramatically affected the growth of tall fescue. Turf growth and turf quality had been significantly lower than the outside control since July 20/21 and 23/24, respectively. Turf quality had decreased to the level which below the acceptable quality (6.0) since August 8/9. Leaf chlorophyll content had also decreased significantly compared to the control since July 28/29. However, leaf electrolyte leakage had been significantly higher than the control since August 6. MDA content in leaves had also increased significantly compared to the control for about half of the experiment period. The results indicated that nest type annular structure of the simulated stadium had great impact on the heat accumulation effects in the stadium, which significantly inhibited the growth of lawn.