陇东地区地处西北黄土高原腹地，为典型雨养农业区，冬小麦生产在粮食生产中占有重要位置。该地区降水集中在7 — 9月，季节性干旱频发，冬小麦最大需水期降水满足率仅为29.31%；生育期间整体气温变暖，但12月至次年2月和4月气温变化剧烈，在冬小麦生育期提前的情况下易形成冻害。在分析陇东地区寒旱特征及冬小麦受灾成因的基础上，根据当地气候和降水特征，提出生物主动御旱御寒与覆盖保墒增温抗旱抗寒技术模式，即选育出抗旱耐寒冬小麦新品种，配套抗旱耐寒栽培技术，以保证区域冬小麦生产安全。

East Gansu province is located in the northwest loess plateau hinterland， for typical rainfed agricultural region， winter wheat production occupies an important position in grain production in this area. Precipitation in East Gansu province is concentrated in Jul-Sept， and seasonal drought occurs frequently. The precipitation satisfaction rate of winter wheat during the maximum water demand period was only 29.31%. The overall temperature was warm of winter wheat growth， but the temperature changed dramatically from Dec. to Feb. and Apr. of the following year， under the condition that the growth period of winter wheat is advanced， frost damage is formed. On the basis of analyzing the characteristics of cold and drought and the causes of winter wheat disaster in East Gansu province， according to the local climate and precipitation characteristics， puts forward the technical model of biological active drought-resistant and cold-resistant technology， that is， breeding new drought-resistant and cold-resistant winter wheat varieties and supporting drought-resistant and cold-resistant cultivation technology， so as to ensure the safety of regional winter wheat production.

S512.1

国家重点研发计划项目(2018YFD020040503)。