晚霜冻对内丘富岗苹果的影响分析

以内丘县1960 ～2013年日最高气温、日最低气温、初终霜日期、无霜期数据为依据,采用统计分析和滑动t检验方法,针对晚霜冻对内丘富岗苹果的影响进行分析.结果表明,内丘县终霜平均日期为3月30日,无霜冻期平均为206d;近年来内丘县无霜期呈现明显增加的趋势,且富岗苹果花芽萌芽期和盛花期发生大面积冻害的有6年,这6年基本上均是受强冷空气的影响,降温幅度大,日最低温度、日最高温度在晚霜冻发生前呈现阶梯式下降、在晚霜冻发生后呈阶梯式上升,这为晚霜冻的预警和预防提供了准备时间.

Effects of Late Frost on Neiqiu Fugang Apple

Based on daily maximum temperature, daily minimum temperature, the beginning of the last frost date, frost free period data in Neiqiu County during 1960 -2013, using statistic analysis and moving t method, effects of late frost on Neiqiu Fugang apple were analyzed. The results showed that last frost data is on March 30, frost free period data is 206 d; in recent years, frost free period showed obviously increasing trend ; there are 6 years of large area chilling in apple flower germination period and full - bloom stage, daily minimum temperature and maximum temperature indicated ladder type decreasing and increasing before and after late frost, which provides preparation time for early warning and pre- vention of late frost.