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作 者 ：赵鸿^1,2;李凤民²;熊友才²;张强¹;王润元¹;杨启国¹

期 刊 ：应用生态学报 2009年 20卷 04期 页码：887-893

关键词：小麦；

摘 要 ：基于1981—2006年西北干旱区高海拔地（民乐站）和低海拔地（张掖站）农业气象观测站的观测资料，对民乐站和张掖站的气温变化及其对春小麦生长发育和产量的影响进行了研究.结果表明：研究期间，民乐站、张掖站的气温均呈增加趋势，且高海拔地区的增温幅度大于低海拔地区；民乐站春小麦对气温变暖的响〖JP2〗应表现为生育期缩短、产量增加，张掖站春小麦对气温变暖的响应表现为生育期缩短、产量下降；春小麦生育期内日均气温每升高1 ℃，民乐站和张掖站春小麦生育期分别缩短8.3 d和3.8 d.民乐站春小麦生育期内最高气温低于30.4 ℃时，春小麦生育期和产量均小幅增加，当超过30.4 ℃时，春小麦生育期缩短、产量下降.

Abstract:Based on the 1981〖KG-*2〗-〖KG-*7〗2006 observation data from agricultural meteorological stations at Minle (high altitude) and Zhangye (low altitude) in northwest arid area, the effects of air temperature change at the two altitudes on the growth and yield of spring wheat were studied. It was shown that during study period, the air temperature at the two altitudes had an increasing trend, and the increment was greater at high altitude than at low altitude. At high altitude, the growth duration of spring wheat shortened but the grain yield increased; while at low altitude, the growth duration shortened and the yield decreased. When the mean daily
air temperature during spring wheat growth period increased by 1 ℃, the growth duration shortened by 83 days at high altitude and by 38 days at low altitude. The growth duration and grain yield of spring wheat at high altitude had a slight increase when the maximum air temperature during growth period was below 304 ℃, but decreased when the maximum air temperature was above 304 ℃.

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