基于温度场的储粮区域划分研究

Study on Grain Storage Area Division Based on Temperature Field

现阶段我国储粮生态区域划分为高寒干燥、低温干燥、低温高湿、中温干燥、中温高湿、中温低湿、高温高湿7个储粮区。按生态特点,15℃以上有效积温既有重叠交叉、又有隔离间断;年平均相对湿度范围跨度过大,在科学指导粮库建设、仓型选择上存在一定偏差。研究利用113座城市2018—2020年大气数据,通过统计分析,获得气温高于15℃不利积温与时长累积值这一最具特征指标,利用Origin软件构建积温云图,将储粮区划分为超低积温区、低积温区、中积温区、高积温区、大跨度积温区5个区域,建议将不利积温与时长累积作为储粮区划分主要指标。

At present,the ecological regions of grain storage in China are divided into seven grain storage regions,namely,cold and dry,low temperature and dry,low temperature and high humidity,medium temperature and dry,medium temperature and high humidity,middle temperature and low humidity,and high temperature and humidity.From the point of view of effective accumulated temperature above 15℃,there are both overlapping and quarantine discontinuity.From the point of view of annual average relative humidity,the range span is too large,and there will be a certain deviation in the scientific guidance of grain depot construction and warehouse type selection.In this study,based on the atmospheric data of 113 cities from 2018 to 2020,through statistical analysis,the most characteristic index of adverse accumulated temperature and duration accumulation value with temperature higher than 15℃was obtained.The accumulated temperature cloud map was constructed by Origin software,and the grain storage area was divided into five areas:ultra-low accumulated temperature area,low accumulated temperature area,medium accumulated temperature areas,high accumulated temperature areas and large-span accumulated temperature areas.It was suggested that the adverse accumulated temperature and the long-time accumulation should be used as the main indexes for the division of grain storage areas.