不同草种单播草坪蒸散量与脯氨酸含量的研究

A Study on the ET of Different Turf-grass Species

对草地早熟禾、多年生黑麦草、高羊茅、狗牙根、结缕草和野牛草6种常见草坪草草坪的蒸散量进行的研究表明在充分灌水的条件下,冷地型草坪的蒸散量显著大于暖地型草坪(P<0.01);三种冷地型草坪间差异较小;暖地型草坪中狗牙根和结缕草的蒸散量显著高于野牛草(P<0.01).限制灌水条件下,6种草坪的蒸散量差异均显著(P<0.05或0.01),其顺序为:高羊茅>早熟禾>黑麦草>狗牙根>结缕草>野牛草.结缕草蒸散量在一天内随温度的升高而增加,但在温度维持在较高时由于气孔关闭导致蒸腾降低从而蒸散量降低.五种草坪草脯氨酸含量顺序为高羊茅>多年生黑麦草>草地早熟禾>结缕草>狗牙根.

The ET of six different tuff - grass species in Beijing was studied. The result showed that ET was higher significantly in cool - season tuff - grass than in warm - season turf - grass under sufficent irrigation（P〈 0.01）. Among three cool - season turf - grass, ET difference not significantly （P〈0.01）. The ET of Cynodon dactylon cv Sun city and Zoysica sinica was higher significantly than that of Buchloe dactyloides （P〈0.01） in the warm-season tuff-grass, In the condition of limit irrigation, the difference between six turf- grass species was significantly（P〈 0. 05 or P〈 0.01 ）. The order of ET Festuca arundinacea cv Pixie 〉 Poa Pratensis cv Midnight Lolium Perenne cv Pickwick 〉 Cynodon dactylon cv Sun city 〉 Zoysica sinica 〉 Buchloe dactyloides. Under water stress condition, the order of the Proline content in the six tuff species leaf is： Festuca arundinacea cv Pixie 〉 Lolium Perenne cv Pickwick 〉Poa Pratensis cv Midnight 〉Zoysica sinica sinica〉 Cynodon dactylon cv Sun city.