怀化山区一季稻种植垂直气温特征分析

摘要

选择怀化地区国家气象站和部分区域自动站的气象数据,统计了多个海拔高度范围的逐句平均气温,大至确定了该地区一季稻播种育秧、移栽分蘖、抽穗开花等关键界限气温季节分布情况.分析了水稻生长关键界限气温指标的始终日垂直特征,得到各个海拔范围一季稻种植的安全播种始日、安全齐穗终日、适用潜在生育期等,为该地区一季稻的农事安排提供参考依据.%Using the meteorological data from national weather station and the regional automatic meteorological station in Huaihua,the research counted the average temperature of ten days in different altitude range,roughly confirmed the key local seasonal distribution of critical limits temperature index of seeding and seedling-raising,transplanting and tillering,heading and flowering of single-season rice in this area.Then the research analyzed on the vertical characteristics of the beginning and the ending day of the key boundary temperature index in rice growth,and got the safe beginning-date of sowing,safe ending-date of heading and applicable potential growth period,which provide safe farming arrangements of plating single-season rice in different altitude range.