硅肥提高草地早熟禾抗旱性的效应及机制  

Effects and mechanisms of silicon on drought resistance of Kentucky bluegrass

作　　者：王生银[1] 李泽西[1] 白贺兰 柴琦[1] 

机构地区：[1]兰州大学草地农业科技学院农业部草地农业生态系统学重点开放实验室,甘肃兰州730020

出　　处：《草业科学》2008年第2期116-120,共5页Pratacultural Science

基　　金：国家基础研究发展规划(973项目)课题"牧草;乡土草繁殖特性的遗传与选育的基础研究"(2007CB108904);国家基础条件平台子课题(2006DKA21007-9)

摘　　要：在不同水分处理和不同硅肥浓度处理下研究外源硅对草地早熟禾巴润Poa pratensiscv.Baron抗旱性的影响,结果表明:硅参与植物的许多生理活动,增施硅肥能够提高草地早熟禾的发芽率,增加植株的高度、叶片数和分蘖数,对草地早熟禾植株的叶片相对含水量、质膜透性和脯氨酸含量均有重要的影响,可增强草地早熟禾的抗旱性。Effects of silicon on the drought resistance of Kentucky bluegrass were conducted based on four irrigation treatments and five silicon concentrations. The results showed that silicon involved in many physiological activities. Increased application rate of silicon could improve the germination rate of Kentucky bluegrass; enhance the plant height; increase the numbers of tillers and leaves. Silicon also showed great effects on RWC, membrane permeability and pralines content of Kentucky bluegrass.

关 键 词：硅 草地早熟禾 抗旱性 

分 类 号：S688.4[农业科学—观赏园艺]