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气候异常与中国小麦白粉病灾害流行关系的研究
引用本文:霍治国,叶彩玲,钱拴,陈林,刘万才.气候异常与中国小麦白粉病灾害流行关系的研究[J].自然灾害学报,2002,11(2):85-90.
作者姓名:霍治国  叶彩玲  钱拴  陈林  刘万才
作者单位:1. 中国气象科学研究院,北京,100081
2. 全国农业技术推广服务中心,北京,100026
基金项目:“十五”国家科技攻关计划项目 (2 0 0 1BA5 0 9B)
摘    要:分析了厄尔尼诺事件与我国冬小麦白粉病发病面积的相关关系。结果表明:在厄尔尼诺出现的起始年,冬小麦白粉病发病面积相对较小;在厄尔诺起始年至下一个厄尔诺起始年前的前一年,冬小麦白粉病发病面积趋势逐年增大,并在下一个厄尔尼诺起始年前一年达到最大值;在连续出现厄尔尼诺的年份,冬小麦白粉病发生面积逐年降低。厄尔尼诺事件通过引发主要麦区的诱水、温度异常来影响小麦白粉病的流行程度。造成厄尔尼诺年我国小麦白粉病发病面向相对较低的原因,与厄尔尼诺起始年前的冬半年寒潮活动加强造成冬小麦冻害严重,大大降低了小麦白粉菌的越冬基数及春季干旱不利于小麦白粉菌的侵染有关。

关 键 词:气候异常  厄尔尼诺事件  小麦白粉病  发生面积  降水  温度
文章编号:1004-4574(2002)02-0085-06
修稿时间:2001年12月24

Relationship between climatic anomaly and prevailling of the wheat powdery mildew in China
HUO Zhi guo ,YE Cai ling ,QIAN Shuan ,CHEN Lin ,LIU Wan cai.Relationship between climatic anomaly and prevailling of the wheat powdery mildew in China[J].Journal of Natural Disasters,2002,11(2):85-90.
Authors:HUO Zhi guo  YE Cai ling  QIAN Shuan  CHEN Lin  LIU Wan cai
Institution:HUO Zhi guo 1,YE Cai ling 1,QIAN Shuan 1,CHEN Lin 1,LIU Wan cai 2
Abstract:The relationship between El Nino events and the epidemic area of the winter wheat powdery mildew in China are analyzed. The results show that epidemic area is relatively small in the first El Nino year, the trend of epidemic areas increases year by year from the first El Nino year to preceding year of next first El Nino year when epidemic area is up to maximum and the epidemic area decreases year by year in continuous El Nino years. The effects of El Nino on epidemic degree of winter wheat powdery mildew in main wheat areas in China are caused mainly by rainfall and temperature anomaly. The cause that epidemic degree of winter wheat powdery mildew is relatively low in China in the first El Nino year may be explained as follows: enhancement of cold current in last winter half year of the first El Nino year brings on serious damage to winter wheat that significantly decreases overwinter number of winter wheat powdery mildew and, on other hand, drought in spring is unfavorable to infestation of wheat powdery mildew.
Keywords:climatic anomaly  El Nino events  wheat powdery mildew  epidemic area
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