小麦灌浆期间温度与千粒重关系的研究  

Study on relationship between temperature and the grain weight in the grain filling period of winter wheat

作　　者：夏国军[1] 崔金梅[1] 郭天财[1] 王晨阳[1] 

机构地区：[1]河南农业大学国家小麦工程技术研究中心,河南郑州450002

出　　处：《河南农业大学学报》2003年第3期213-216,共4页Journal of Henan Agricultural University

摘　　要：分析了1981—1997年冬小麦品种郑引一号灌浆期间的温度与小麦千粒重、灌浆速率、灌浆时间等的关系.结果表明,小麦千粒重与灌浆速率和灌浆时间呈正相关关系,灌浆时间引起千粒重的变化(占36%)小于灌浆速率引起千粒重的变化(占64%).平均温度与千粒重呈抛物线关系;5月下旬的高温对千粒重影响很大,二者为显著的线性负相关关系,此期温度每升高1℃,千粒重将下降1.11g,气温日较差与千粒重为线性正相关关系.The relationship was analyzed between 1 000grainweight and temperature in the grain filling stage of winter wheat from 1981 to 1997. The results were as follows:1 000grainweight was positively correlated with the grain filling rate and the grain filling time. It was also found that change of 1 000grainweight caused by grain filling time (occupied 36%) was smaller than that by grain filling rate (occupied 64%). A parabola relationship existed between average daily temperature and 1 000grainwight.The high temperature in the last ten days of May had a great effect on 1 000grainweight. The high temperature was in significantly negative correlation with 1 000grainweight, which indicated that 1℃ increase of temperature in late May would cause 1.11 g decrease of 1 000grainweight. A positive correlation was also found between the average daily temperature and 1 000grainweight.

关 键 词：小麦 灌浆期 温度 千粒重 灌浆时间 灌浆速率 

分 类 号：S512.1[农业科学—作物学]