福州山区枇杷冻害等级时空变化特征

Characteristics of temporal and spatial in frozen injury grade of loquat in Fuzhou mountainous area

为实现对枇杷低温冻害风险评估和农业生产布局,对福州地区1961-2016年冬季日最低气温及枇杷冻害等级进行统计分析,探索福州地区枇杷冻害等级时空变化特征。明确在枇杷幼果期各种冻害级别出现次数的排序是1月、12月、2月;福州地区各县市枇杷冻害出现日数以西部、西北部最多,中部沿海其次,南部沿海最少。因此,福州西部、西北部县市应减少枇杷种植面积;中部沿海县市应控制种植面积;南部沿海县市应根据山区气温分布规律,调整枇杷品种布局和种植规模。

In order to finish frozen injury of loquat risk assessment and allocation of agricultural production,based on the analysis and statistics of the daily minimum temperature in winter and frozen injury grade of loquat during 1961-2016 years,exploring temporal and spatial in frozen injury grade of loquat in Fuzhou mountainous area. Explicating the order of occurrence of young fruit stage of loquat got different frozen injury grade is January,December,February; the most number of frozen injury of loquat is in the western counties and northwestern counties in Fuzhou,the second is in the central coast counties,the third is in the southern coast counties; the western and northwestern counties in Fuzhou should reduce the planting of loquat,the central coast counties should control the planting proportion of loquat,the southern coast counties must adjust the variety and scale of loquat to the temperature distribution law in mountainous area.