高温胁迫下水肥耦合对高羊茅生态性状的影响  

Effect of water and fertilizer coupling on ecological characters of Festuca arundinaceaunder heat stress

作　　者：江宏娟[1] 李建龙[1] 李良霞[1] 

机构地区：[1]南京大学生命科学院,江苏南京210093

出　　处：《草业科学》2009年第7期152-157,共6页Pratacultural Science

基　　金：得到国家高技术(863计划)专题项目(2007AA10Z231)

摘　　要：采用盆栽方式,在控水、控肥条件下,设计了低、中、高3个水分水平和3个养分水平,研究了在高温(38/30℃,昼/夜)胁迫条件下,不同水肥耦合方式对高羊茅品种凌志Festuca arundineceacv.Barlexas生态性状的影响。结果表明:水分和养分及其耦合效应对高羊茅草坪草的生态性状有显著的影响,水肥耦合的施肥灌溉方式明显好于单纯的水分灌溉;最佳的水肥耦合方式是中水中肥(f2w2),能最大限度地改善高羊茅草坪草的生态性状,延长高羊茅草坪草在高温胁迫下的绿期,而水分不足或淹灌以及养分不足或过多都不利于高羊茅的生长;在高温胁迫下,水分比肥料对高羊茅的作用更大。This paper designed the low, middle and high water levels and three levels of nutrients with pot test under controlled conditions, studied the impact of different methods of water and fertilizer coupling on the ecological characters of tall rescue （Festuca arundinecea cv. Barlexas） under high-temperature （38/30 ℃, day / night） stress. The results showed that water and nutrients and the coupling effect had a remarkable impact on the ecological characters of tall fescue, the method of coupling water and fertilizer was better than single irrigation. The best way of coupling water and fertilizer was medium water and fertilizer （f2w2）, it maximized to improve the ecological characters of the tall fescue, and prolonged the green period under heat stress, but inadequate water and basin irrigation or insufficient or too much nutrients were not benefit to the growth of tall fescue, and the moisture had greater effect on tall fescue than fertilizer under heat stress.

关 键 词：高温胁迫 水肥耦合 高羊茅凌志 生态指标 耐热性调控 

分 类 号：S688.4[农业科学—观赏园艺]