陇东旱塬冬小麦品种抗晚霜冻能力鉴定  

Identification on Winter Wheat's Resistance of Spring Frost in Loess Plateau Region of East Gansu

作　　者：祁旭升 窦有恒[1] 王晓娟[1] 陈伟英[1] 刘自成[2] 

机构地区：[1]甘肃省农业科学院粮食作物研究所,甘肃兰州730070 [2]陇东学院农学系,甘肃西峰745000

出　　处：《农业现代化研究》2007年第1期121-123,共3页Research of Agricultural Modernization

基　　金：日本国际协力集团(JICA)中国可持续农业技术研究项目

摘　　要：利用熟性不同抗晚霜能力不同的15个冬小麦品种,采用塑料大棚(返青后)和露地两种栽培方式,在2006年两次自然晚霜冻条件下,分别调查、镜检叶片和幼穗的受冻状况,并同步测定冻前冻后叶片汁液可溶性固形物浓度。结果表明:大棚小麦的抗霜力弱于露地;前期生长发育越快的品种,抵御晚霜冻的能力越差;在早、中、晚熟组中抗霜性较好的品种分别是太原475、西峰22、OS.U.W8034;关于叶片汁液可溶性固形物浓度与品种抗晚霜性的关系,有待继续进行研究。Using fifteen winter wheat cultivars which have different maturity and different resistance capacity of spring frost,two cultivation methods were studied.One group was shed with plastic （After rejuvenation）.The other group was in the open ground.Under twice natural spring frost conditions in 2006,the frost of the leaves and young spike were investigated and analyzed under microscope respectively.Meanwhile,the soluble solid matters were determined before and after frost.The result showed：the resistance of spring frost of those who were shed with plastic were short than that of in the open ground;the faster of early growth,the worse of resistance of spring frost;Among the early,middle and late cultivars,Taiyuan 475,Xifeng 22 and O.S.UW8034 have better resistance of spring frost;the relations of consistence of the soluble solid matters and resistance of spring frost on different cultivar need further research.

关 键 词：陇东旱塬 冬小麦品种 抗晚霜能力 

分 类 号：S512.1[农业科学—作物学]