摘要
选取辽宁地区50个气象站点1980-2015年的平均气温数据资料,分析近30年辽宁地区≥10℃积温,四季变化倾向和周期性变化特征及对农业生产的影响.分析结果表明：1980-2015年,辽宁≥10℃积温值增加,持续日数增多,初始日期的提前,终止日期的后延,结合复种花生品种引进及不同区域的气象因子分析,存在复种区域的种植界限向北扩展的趋势,并且以≥10℃积温为主要划分依据,结合不同区域的气象数据,划分辽宁省马铃薯复种区域分布图,从而充分利用光热资源,提高复种指数,提高土地利用率.
The average annual temperature data in Recent 30 a≥10℃ accumulated temperature by selected 50 meteorological stations of Liaoning province in 1980 -2015 , the changing seasons and periodic variation tendency and its effect on agricultural production. The results show ： the Liaoning ≥10℃ accumulated temperature increased in 1980 -2015, the increase for several days, in advance of the initial date, the date of termination of the extension, combined with the introduction of different regions and cropping peanut varieties meteorological factor analysis, the presence of multiple cropping area of cultivation boundaries northward ex-pansion trend by ≥10℃ accumulated temperature as the main division basis, combined with meteorological data in different regions,the regional division of Liaoning Province potato cropping distribution to take advantage of light and heat resources, increasing multiple cropping index, improve land utilization.
出处
《辽宁农业科学》
2016年第6期1-4,共4页
Liaoning Agricultural Sciences
基金
辽宁省农业攻关计划项目(2013215001)
关键词
有效积温
复种
一年两熟
Accumulated temperature
Multiple cropping
A year two practice
