| 段金省.气候变暖对陇东塬区冬小麦成熟期的影响与适宜收获期预报[J].干旱地区农业研究,2007,(1):158~161 |
| 气候变暖对陇东塬区冬小麦成熟期的影响与适宜收获期预报 |
| Effect of climate warming on mature date of winter wheat and forecast of harvest in Eastern Gansu Province |
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| DOI：10.7606/j.issn.1000-7601.2007.01.33 |
| 中文关键词: 气候变暖 陇东塬区 冬小麦 成熟期 |
| 英文关键词:climate warming east of Gansu Province winter wheat mature period |
| 基金项目:科技部社会公益项目(2005DRB5J192) |
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| 摘要点击次数: 404 |
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| 中文摘要: |
| 通过对陇东塬区近35年来的气温资料分析发现,平均气温随年代呈明显增加趋势,年平均气温上升幅度为0.0528℃/a,且以冬春季增幅最大,夏秋季增幅较小。气候变暖使陇东塬区冬小麦春季各发育期整体提前,是冬小麦成熟期提前的主要原因;春末夏初气温偏高、降水偏少,高温持续时间长,加快了冬小麦的生殖生长阶段的发育进程,使发育期间隔天数缩短,也是冬小麦的成熟期明显提前的另一原因。同时根据西峰农试站近10年来对陇东塬区冬小麦灌浆速度的测定结果,结合冬小麦拔节抽穗期的天气气候、作物生长发育进程、相似年型分析,建立了冬小麦成熟期的预报思路和方法,预测了2006年庆阳市冬小麦适宜收获期,并对庆阳市近5年来适宜夏收期间的降水日数进行了分析,做出了2006年庆阳市冬小麦适宜收获期为6月1525日的预报结论,预报结论和冬小麦的实际成熟期相吻合。 |
| 英文摘要: |
| The temperature data in past 35 years for east Gansu Province were analyzed.The result showed that the average temperature had a tendency to obviously increase with years,the increase range of the yearly average temperature was 0.0469 ℃/a,the increase scope was the largest in spring and winter,and relatively small in summer and autumn.Climate warming made winter wheat growth early in spring,which is the main reason that the mature period of winter wheat became early.The high temperature at the beginning of summer and at the end of spring,little precipitation and long duration of high-temperature accelerated the development process of winter wheat and shortened growth days,which is another reason that the mature period of winter wheat became early.According to the measurement data of winter wheat in past 10 years at agri-meteorological experiment station of Xifeng,weather data from jointing to ear period of winter wheat,crop development process and year type analysis,prediction thinking and method of mature period of winter wheat were set up.The suitable reaping date of winter wheat for Qingyang in 2006 was predicted.The number of precipitation days suitable for Qingyang in summer harvest in past 5 years was analyzed.It was predicted that the suitable reaping date of winter wheat for Qingyang in 2006 was 15～25 June.The prediction is identical with really mature period. |
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