氮磷对园林景观草坪色素含量及外观质量的影响

Effect of Nitrogen and Phosphorus on Pigment content and Appearance Quality in Landscape Lawn

以早熟禾草坪为试材,研究了不同氮磷施用量对其色素含量及外观质量的影响。结果表明:氮磷可以提高草坪叶片内叶绿素a、b含量,其中41.90kg/hm2处理提高效果最佳,与对照相比差异显著,37.71kg/hm2处理提高效果最差,与对照间无显著差异;41.90kg/hm2处理除8月份外均可提高类胡萝卜素含量,6、10月显著高于对照;草坪外观质量总评得分41.90kg/hm2处理最高,分别高于其他3个处理1.38分、0.96分、0.47分。分析认为氮磷施用量以41.90kg/hm2为最佳。

The Poa pratensis L.was used to study the pigment content and appearance quality changes under different nitrogen and phosphorus fertilizer.The results showed that：nitrogen and phosphorus can increase the lawn chlorophyll a,b content,41.90kg/hm^2 treatment improved best and have significant difference with the control,37.71kg/hm^2 treatment was worst and with no significant difference between the control;41.90kg/hm^2 treatment can improve the carotenoid content except in August;in June and October it was significantly higher than the control;the lawn appearance quality overall score 41.90kg/hm2 treatment was highest and it was higher than other treatment 1.38 score,0.96 score,0.47 score.Analysis of nitrogen and phosphorus fertilizer to 41.90kg/hm^2 was best.