摘要
对河南北部地区近10a(2000-2009年)小麦全生育期及不同生长阶段的积温和特定温度累积天数等温度因子与成熟期进行相关分析,结果表明,11月-翌年4月日平均气温≥15℃的累积天数(AD15)和日最高气温≥20℃的累积天数(HD20)与3种熟性小麦的生育期长度均达极显著水平(P<0.01)。用基于日平均气温≥15℃累积天数的回归方程回代模拟历年成熟期,模拟结果与实际日期吻合,表明特定时期特定温度是影响该生态类型区小麦生长发育进程的一个重要气象因子,用日平均气温≥15℃的累积天数的观测值可有效预测小麦成熟期和收获期,在小麦安全收获中有重要的指导价值。
The correlation relationship between accumulated temperature during whole growth period and in different growth stages, the temperature factors that included accumulated days of specific temperature index and maturing time in north of Henan province last 10 years （2000 -2009 ） was analyzed, the results showed that accumulated days （ AD15 ） of the maximum daily temperature ≥15 ℃ and accumulated days （ HD20 ） of the maximum daily temperature ≥20℃ during November to April（next year）were significantly correlated with the days of whole growth period（P 〈0.01 ）. Each maturing time was simulated by using the equation of accumulated days of average temperature≥ 15℃ ,the results were highly consistent with the actual maturity, which indicated that the AD15 and HD20 during November the year to April next year were the key meteorological factors that influence wheat growth and development. AD15 of average temperature≥15℃ could be used to predict wheat mature time and harvest time effectively.
出处
《中国农业气象》
CSCD
北大核心
2012年第1期104-108,共5页
Chinese Journal of Agrometeorology
基金
河南省基础与前沿计划(102300410127)
