12份禾本科牧草苗期抗旱性分析  

Analysis of Drought Resistance of Twelve Gramineous Forage Seedlings

作　　者：杨刚[1] 张荟荟[1] 高洪文[2] 沙吾列[1] 郑晓红[1] 付爱良[1] 

机构地区：[1]新疆畜牧科学院草业研究所,乌鲁木齐830000 [2]中国农业科学院北京畜牧兽医研究所,北京100193

出　　处：《新疆农业科学》2011年第11期2116-2120,共5页Xinjiang Agricultural Sciences

基　　金：国家"十一五"科技支撑项目(2008BADB3B01)

摘　　要：【目的】比较研究干旱胁迫下12份禾本科牧草的苗期抗旱性,为抗旱牧草品种的选育提供理论依据。【方法】采用室内盆栽试验方法对牧草进行连续干旱胁迫处理。【结果】将12种禾草的抗旱性大致可以分为3类,冰草和高燕麦草为强抗旱性牧草;内蒙古冰草、中间偃麦草、偃麦草和新麦草为中等抗旱性牧草;鹅观草和披碱草为弱抗旱性牧草。【结论】通过综合比较分析发现在干旱胁迫下冰草和高燕麦草的抗旱性较强,适合在干旱少雨的地区种植。[ Objective]The purpose of this project was to provide a theoretical basis for breeding drought -resistance forage by comparatively studying 12 gramineous forage＇s seedlings under the drought stress. [ Method] The study adopted indoor pot experiment on forage for continuous drought stress. [ Result ] The 12 grass species in drought resistance were divided into three categories： Strong drought - resistance forage has Agropyron cristatum （ Linn. ） Gaertn. and Arrhenatherum elatius （ L. ） Mert. et. Koell ; Medium - drought forage has Agropyron mongolicum Keng, Elytrigia intermedia （Host） Nevski, E. repens （L.） Desr. and Psathyrostachys juncea （Fisch.） Nevski; Weak drought -resistance forage has Roegneria kamoji Ohwi. and Elymus dahuricus Turcz. [ Conclusion] Through a comprehensive comparative analysis it was found that under the drought stress A. cristatum （ Linn. ） Gaertn. and A. elatius （ L. ） Mert. et. Kocll have a high drought resistance, and they are suitable for planting in the drought areas.

关 键 词：牧草 苗期 抗旱性 

分 类 号：S543[农业科学—作物学] S503.4