【摘要】 1980年和1981年的田间调查和系统观察结果表明,陇南南部是新发现的条锈菌越夏区。它位于甘肃省东南部,包括武都、文县、成县、宕昌、舟曲和迭部等六县。康县也可能属于这一越夏区。从地理位置看,陇南南部越夏区把我国西南和西北两大片条锈菌越夏区连成一片,对交流这两个地区的越夏菌源具有重要作用。条锈菌在这个地区的晚熟冬、春麦和自生麦上越夏。自生麦苗越夏的海拔高度下限约1600公尺。据1981年资料,这个地区晚熟冬、春麦越夏面积共73,397亩,其中冬麦占56.8%,春麦占43.2%;自生麦苗越夏的最大面积约211,820亩。更多还原

【Abstract】 Field surveys and observations carried out during 1980～1981 revearedthat South Lungnan is a newly discovered over-summering region of Puc-cinia stiiformis.It locates in the southeastern part of Gansu province,including Wudu,Wenxian,Chengxian,Dangchang,Zhouqu and Diebucounties and probably Kangxian county.This region joins the oversummer-ing regions of Puccinia striiformis in Northwest and Southwest of Chinaand plays an important role in exchanging the inoculation of stripe rustbetween the two areas.Results of field surveys indicated that the Puccinia striiformis over-summers on the late winter or spring wheat crops and volunteer wheatseedlings.The low limit of altitude for oversummering in this region isabout 1600 metres above sea level.更多还原