| 临汾市冬小麦生育期降水对产量的影响分析 |
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| 引用本文： | 李国强,张亚平,贾海燕,杨斌斌,孙悦,纪春燕.临汾市冬小麦生育期降水对产量的影响分析[J].山西农业科学,2011,39(8):877-879. |
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| 作者姓名： | 李国强 张亚平 贾海燕 杨斌斌 孙悦 纪春燕 |
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| 作者单位： | 临汾市气象局,山西临汾,041000 |
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| 摘 要： | 冬小麦产量的变化主要受降水、温度、光照等气象要素的影响,其中,以降水尤为明显。冬小麦全生育期对降水量的需求不尽相同,拔节—抽穗期和抽穗—乳熟期是冬小麦需水最大的时期,降水对产量的影响也最大。临汾市冬小麦生育期降水量的变化是影响冬小麦产量的主要因素。1985—2008年冬小麦产量和降水的对比分析发现:4月份(拔节—抽穗)降水量的多少对冬小麦产量影响很大,降水量与小麦产量呈正相关,在适宜的范围内,降水量偏多的年份为增产年,降水量偏少的年份为减产年;在冬小麦全生育期,临汾市多年平均降水量小于冬小麦生育期需水量;在春季降水异常的年份中,降水量偏少比降水量偏多对冬小麦减产影响明显;在冬小麦生育后期,降水因素(降水量与降水日数)是影响冬小麦产量的主要因素。
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| 关 键 词： | 临汾市 冬小麦 生育期 降水 产量 |
Impact of Precipitation during the Growth Period on Winter Wheat Yield in Linfen City |
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| LI Guo-qiang,ZHANG Ya-ping,JIA Hai-yan,YANG Bin-bin,SUN Yue,JI Chun-yan.Impact of Precipitation during the Growth Period on Winter Wheat Yield in Linfen City[J].Journal of Shanxi Agricultural Sciences,2011,39(8):877-879. |
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| Authors: | LI Guo-qiang ZHANG Ya-ping JIA Hai-yan YANG Bin-bin SUN Yue JI Chun-yan |
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| Institution: | LI Guo-qiang,ZHANG Ya-ping,JIA Hai-yan,YANG Bin-bin,SUN Yue,JI Chun-yan(Linfen Meteorological Bureau of Shanxi Province,Linfen 041000,China) |
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| Abstract: | The winter wheat yield is mainly affected by changes of precipitation,temperature,light and other major meteorological elements,in which precipitation is particularly evident.Demand for precipitation is very different in whole growth period of winter wheat,and at jointing-heading stage and heading-ripeness stage water demands are the largest,and the impact of precipitation on yield is maximal.In Linfen,the precipitation during the growth period is the main factor to winter wheat yield.Compared the winter wh... |
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| Keywords: | Linfen winter wheat growth period precipitation yield |
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