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中国农学通报

中国农学通报 ›› 2019, Vol. 35 ›› Issue (36): 11-15.doi: 10.11924/j.issn.1000-6850.casb18070016

所属专题： 小麦； 农业气象

• 农学 农业基础科学 • 上一篇    下一篇

甘肃河东地区春季第一场透雨对冬小麦拔节期各个器官的发育影响

吴丽1, 蒲禹君2, 汪丽萍3, 蒲金涌1   

  1. 1.甘肃省天水市气象局;2.陕西省建筑设计研究院有限责任公司;3.甘肃省天水市麦积区气象局
  • 收稿日期:2018-07-05 修回日期:2019-11-20 接受日期:2018-09-25 出版日期:2019-12-26 发布日期:2019-12-26
  • 通讯作者: 吴丽
  • 基金资助:
    甘肃省气象局科研项目“集合预报对陇东南强降水的预报方法研究及应用”(2GSMAZd2018-06)。

The First Spring Saturating Rain in the East of the Yellow River in Gansu: Effect on Wheat Organ Development During the Jointing Period

  • Received:2018-07-05 Revised:2019-11-20 Accepted:2018-09-25 Online:2019-12-26 Published:2019-12-26

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摘要： 为了探索春季第一场透雨对冬小麦各个器官的发育影响,利用1981—2012年麦积国家标准气象站逐日降水资料,建立了透雨指数。结合天水农业气象站1981—2012年冬小麦生育期观测及各主要物候期各个器官生物量测量资料,分析了透雨指数的逐年变化趋势及透雨参数对拔节期冬小麦各个器官生物量累计的影响。结果表明,1981—2012年,透雨指数呈逐年降低趋势,有31%的年份第一场透雨出现在拔节生育期前。透雨出现的迟早,对拔节期的单株叶面积、叶面积指数、叶片干物重、茎干物重影响较大；透雨的量级对叶鞘干物重、茎干物重、株干物重、单位面积干物重及小穗数影响较大；透雨指数与单株叶面积、叶面积指数、叶片干物重、叶鞘干物重、茎干物重、株干物重及小穗数均有影响。

关键词: 脐橙, 脐橙, 生理落果, 高温低湿灾害, 气候特征

Abstract: To explore the influence of the first saturating rain in spring on the development of wheat organs, we set up the index of the first saturating rain with the daily precipitation data from 1981 to 2012 in Maiji National Standard Whether Station. Based on the data of biomass of organs and daily precipitation, the variation trend characteristics of the first saturating rain index and its influence on the wheat organs were analyzed. The results showed that the first saturating rain index had a decreasing trend from 1981 to 2012 and 31% of the first saturating rain in spring appeared before the jointing period. The time of the first saturating rain had significant influence on the leaf area of individual plant, leaf index, biomass of leaf and biomass of stem. The amount of the first saturating rain had significant influence on the biomass of leaf sheath, stem, individual plant and unit area and spikelet number. It also indicated that the first saturating rain index had significant influence on the leaf area of individual plant, leaf index, biomass of leaf, biomass of leaf sheath, biomass of stem, biomass of individual plant and spikelet number of individual plant.