黄淮麦区冬小麦拔节后霜冻温度出现规律研究

Chinese Journal of Eco-Agriculture(2007)

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Abstract
用37个农业气象观测站20年逐日最低气温资料,统计出现<0℃和<-1.4℃的累积频率,它们随时间的变化可用指数方程来描述。分析了表征方程特点的参数b、<0℃和<-1.4℃基本终止日期的地区分布规律。根据遭遇霜冻温度的累积频率和拔节期,找出霜冻的可能多发区,并讨论了b值在制定防御霜冻对策中的应用。
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Key words
Winter wheat,Huanghuai wheat production zone,Elongation,Frost,Frequency
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