中国生态农业学报Issue(2)：167-173,7.DOI:10.13930/j.cnki.cjea.141062
气候变暖对烤烟气候适生性和大田可用日数的影响
Effect of global warming on climate feasibility index and available field days of flue-cured tobacco
摘要
Abstract
In order to study the effects of global warming on the adaptability of flue-cured tobacco and available field days in Bijie tobacco-growing region, climate date for 1971ԟ2010 in Bijie tobacco-growing region were used to analyze the trend and characteristics of climate change in the last 40 years. The analysis determined climate feasibility index (CFI) of flue-cured tobacco, the relationship between available field days and temperature and the trends of change in these factors. The results showed that average annual temperature in Bijie tobacco-growing region steadily increased at 0.38 ℃⋅10a−1. The average annual rainfall in the last 40 years in Bijie tobacco-growing region was 1 047.78 mm, with 527.03 mm during tobacco growing period. Average annual sunshine duration in Bijie tobacco-growing region in the last 40 years was 1 318.20 h, with 632.70 h during tobacco-growing period. Sunshine duration gradually decreased during 1971ԟ2010 in Bijie tobacco-growing region due to global warming. CFI increased gradually from 1970 to 2010, with a average annual CFI of 0.62. The start of period with average daily temperature ≥13 ℃occurred early by about 30 d (average of 7.5 d⋅10a−1) during the 40 years. Then the end day of period with average daily temperature≥18 ℃ (which is the harvest stage of flue-cured tobacco) delayed by about 27 d (average of 6.75 d⋅10a−1) after 40 years of global warming. The trend in flue-cured tobacco available field days in the last 40 years steadily increased by 58 d (an increase of 14.5 d⋅10a−1) with increasing annual average temperature. Although global warming reduced rainfall and shortened the sunshine duration in Bijie tobacco-growing region, CFI of flue-cured tobacco increased. This was conducive for the proper growth of flue-cured tobacco due to increasing available field days in the Bijie tobacco-growing region.关键词
烤烟/气候变暖/气候适生性指数/大田可用日数/日均温度/日照时数/降雨量/毕节市Key words
Flue-cured tobacco/Global warming/Climate feasibility index/Available field days/Average daily temperature/Sunshine duration/Rainfall/Bijie City分类
农业科技引用本文复制引用
郑东方,许嘉阳,黄化刚,许自成,翟欣,陈雪,张雅杰,王佩雯..气候变暖对烤烟气候适生性和大田可用日数的影响[J].中国生态农业学报,2015,(2):167-173,7.基金项目
贵州省烟草公司重点科技攻关项目(GY2012-06)资助 （GY2012-06）
