湘西自治州不同植烟单元气候特征值推算

湘西自治州位于湖南的西北部,烤烟种植区域大多分布在350～1150m,由于地形地势和海拔高度的差异,不同植烟单元气候条件差异较大。为摸清各植烟单元的气候特征,对合理安排烤烟移栽期,提高成熟度具有重要的意义。为此,于2016、2017年在4个不同海拔高度建立了的自动气象站,根据连续二年的气象观测资料,分析了气温、界限温度随海拔高度的变化规律,再结合山区气象要素推算模型,分析不同海拔高度气温演变特征,确定了各植烟单元最适移栽期和最适采收期。可为湘西自治州各烟区合理安排生产提供重要参考。

Estimate of Climate Characteristic Values of Different Tobacco Planting Units in Xiangxi Autonomous Prefecture

Xiangxi Autonomous Prefecture is located in the northwest of Hunan, and most of the tobacco planting areas are distributed from 350 to 1150m. Due to the difference in topography and elevation, the climatic conditions of different tobacco planting units differ greatly. In order to understand the climatic characteristics of the various planting units, it is of great significance to arrange the transplanting period of flue-cured tobacco reasonably and increase the maturity. For this purpose, the automatic weather stations established at four different altitudes in 2016 and 2017, based on the observation data of two consecutive years, analyzed the variations of the temperature and the boundary temperature with the altitude, and then combined the mountain meteorological elements. The model was calculated to analyze the evolution characteristics of temperature at different altitudes, and the optimal transplanting period and the best harvesting period for each planting unit were determined. It can provide important reference for reasonable arrangement of production in various tobacco-producing areas in Xiangxi Autonomous Prefecture.