干旱地区农业研究2013，Vol.31Issue(3)：222-226,233,6.
太行山前平原冬小麦生育期干旱分析——以保定市为例
Drought analysis during growth season of winter wheat in piedmont region of Taihang Mountain——A case study at Baoding city
摘要
Abstract
A precise analysis of drought in growth season of winter wheat can provide reference information for agricultural production and management of water resources,and theoretical foundation for study the relationship between precipitation,groundwater dynamics and crop water consumption.In this paper,we analyzed average effective precipitation and meteorological drought frequency during growth season of winter wheat and each growing stage (seedling,wintering period,recovery,elongating ～ mature),based on method of effective precipitation and meteorological drought composite index (CI).The results showed average effective precipitation during growth season was 55.43 mm.The percentage of effective precipitation in annual effective precipitation and growth season precipitation was 13.6 ％ and 52.5 ％,respectively.October and May were main contribution of monthly total effective precipitation,and represented 35.7％ and 27.1％ of average effective precipitation in growth season,respectively.The average water shortage during growth season was more than 350mm.Monthly and annual effective precipitations were significantly different.Based on grade and frequency of monthly CI,average drought frequency of growth season was 58.5 ％ and monthly frequency was more than 50 ％.December was susceptible to mild drought,February and March were susceptible to moderate drought,and severe drought mostly was observed in April.Overall,average effective precipitations during growth season of winter wheat and each growing stage were inconsistent.At different level,they could not meet water need in the piedmont region of Taihang Mountain.Post-winter drought occurred more frequently than pre-winter drought.关键词
冬小麦/有效降水/综合气象干旱指数/干旱频率/太行山前平原Key words
winter wheat/ the effective precipitation/ comprehensive meteorological drought index (CI)/ drought frequency/ the piedmont region of Taihang Mountain分类
农业科技引用本文复制引用
沈彦军,李红军,雷玉平..太行山前平原冬小麦生育期干旱分析——以保定市为例[J].干旱地区农业研究,2013,31(3):222-226,233,6.基金项目
国家自然科学基金项目(40971025) （40971025）
