水分胁迫和施磷对草地早熟禾生长的影响  

Effects of water stress and phosphorus on growth of kentucky bluegrass

作　　者：李寿田[1,2] 韩建国[2] 毛培胜[2] 钱剑林[1] 

机构地区：[1]苏州农业职业技术学院,江苏苏州215008 [2]中国农业大学草地研究所,北京100097

出　　处：《草原与草坪》2012年第4期50-55,共6页Grassland and Turf

基　　金：江苏省"十一五"科技支撑计划基金(BE2008406)子项目;北京市教育委员会共建科研项目(XK100190552;JD100190531);北京市自然科学基金重点项目(6001001)资助

摘　　要：通过温室水培,研究了水分胁迫和磷对草地早熟禾品种Midnight和Briuiant生长的影响,结果表明,无论水分胁迫与否,随着磷施入量的增加,植株地上部鲜重、地上部干重、地上部含水量和地下部干重均显著增加,根冠比下降。水分胁迫抑制了地上部鲜重、地上部干重、地下部干重的增加,使同等磷处理植株地上部鲜重、地上部干重、地下部干重、地上部含水量显著下降,根冠比增加。水分胁迫对抗旱品种Midnight地上部鲜重、地上部干重、地下部干重的抑制作用小于不抗旱品种Brilliant。Effects of water stress and phosphorus on growth of Kentucky Bluegrass were conducted under hydronic culture condition in greenhouse. The results showed that whether there is water stress or not, fresh weights of shoots, dry weights of shoots, dry weights of roots were increased significantly and ratios of roots to shoots were decreased with the increase of phosphorus addition. Increase of fresh weights of shoots, dry we of ights of shoots,dry weights of roots were inhibited by water stress,and fresh weights of shoots,dry weights shoots, dry weights of roots, water contents of shoots were decreased significantly and ratios of roots to ：shoots were increased by water stress at the same phosphorus treatment. The inhibition of water stress on fresh ＇weights of shoots,dry weights of shoots, dry weights of roots of Midnight was smaller than that of Brilliant.

关 键 词：草地早熟禾 水分胁迫 磷 生长 

分 类 号：S688.4[农业科学—观赏园艺]