阜新烟区主要气候因子与烤烟化学品质的关系分析

Study on Relationships between Main Climatic Factors and Chemical Quality of Flue-cured Tobacco in Fuxin Area

通过对2008～2011年阜新烟区烤烟季降雨量、日照时数、月均温和烤烟化学品质的关系分析，表明阜新烟区各气候因子变异系数的大小依次为：大田降雨量＞大田期总日照时数＞大田期均温，其中大田降雨量变异系数最高，是该烟区较不稳定的气候因子。7月份的降雨量与中部叶总糖含量呈显著负相关（r＝-0．956），与上部叶和中部叶钾含量呈显著负相关（分别为-0．974和-0．953），与氯含量呈显著正相关（r＝0．965）。烤后中部叶烟碱含量随着日照总时数的增加而减少，受生育期各月份日照时数的影响较小。8月份均温与烟叶总糖含量和糖碱比呈显著正相关（r＝0．977和r＝0．974）。

According to the data of climatic basic conditions （ rainfall, sunshine hours, monthly average temperature ） during the production of flue -cured tobacco in Fuxin area from 2008 to 2011, the author analyzed the relationships between main climatic factors and the chemical quality of flue -cured tobacco leaves .The results indicated that the variable coefficient of various climatic factors had the following order： rainfall ＆gt;total sunshine hours ＆gt;monthly average temperature .Because rainfall had the highest variable coefficient among 3 climatic factors, it was the most unstable climate factor in this area .The rainfall in July was significant-ly negatively correlated with the total sugar content in middle leaves （r=-0.956）, with the potassium content in upper leaves （r=-0.974） and middle leaves （r=-0.953）, and it was significantly positively correlated with the chlorine content （r=0.965）. The nicotine content in the baked middle leaves decreased with the increase in the total sunshine hours , but it was not affected by the monthly sunshine hours in the whole growth period .The monthly average temperature in August had significantly positive correla-tion with the total sugar content （r=0.977） and the ratio of sugar to nicotine （r=0.974） in tobacco leaves.