湘西烟区烤烟大田期气候资源特征及综合评价

发布时间：2018-02-02 21:57

  本文关键词： 烟区气候 相似性分析 综合评价 湘西　出处：《湖南农业大学》2015年硕士论文　论文类型：学位论文

【摘要】：为明确湘西烟区主产烟县的烤烟大田期气候资源区域特征,采用烤烟大田生长期的温度、降水量、日照时数、空气相对湿度、有效积温等气候因子,分析了其区域气候差异、与国内外主要烟区气候差异,并进行了相似性分析和综合评价。主要研究结论如下：①湘西烟区烤烟大田生长期的日平均温度在20℃以上,降水量在800mm以上,日照时数在700h以上,具备了优质烤烟种植的优势。②湘西烟区烤烟大田生长期具有日均温相对较高,前期降水量相对较多,后期降水量相对较少,日照时数适宜,空气相对湿度较大的特点。③湘西烟区烤烟大田期气候与国内的遵义最为相似,其次为国内的郴州,再次为国外的巴西。④湘西烟区气候适宜性指数在77.60-93.79分,以花垣县气候适宜性指数最高,其次为永顺县,再次为凤凰县。湘西烟区光照、温度、雨量与优质烟生长需求匹配协调,适合优质烤烟的生产。
[Abstract]:In order to clarify the regional characteristics of flue-cured tobacco climate resources in the main tobacco producing counties in Xiangxi tobacco region, climate factors such as temperature, precipitation, sunshine hours, air relative humidity and effective accumulated temperature were used in the growing period of flue-cured tobacco field. The regional climate difference is analyzed, which is different from that of the main tobacco regions at home and abroad. The main conclusions are as follows: the average daily temperature of flue-cured tobacco field is above 20 鈩，

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