陕西省白河烟区气候适生性分析

Climatic Feasibility of Baihe Tobacco Growing Area in Shaanxi Province

为提高陕西省白河烟区气候资源的利用率和增强烟草抗灾能力,分析了白河烟区不同生育期的气候状况,估算了该区气候适生性指数(CFI),找出了引起该区气候适生性波动的主要因子。结果表明:白河烟区气候适生性指数为83.9±9.7,年际变异程度较高;烤烟大田生长成熟期较高的日均气温,旺长期、成熟期严重不足的降雨量是限制该区气候适生性的主要因子。因此,该区在烤烟生产上应采取适时提早移栽期、配套地膜栽培以及加大烟水配套设施建设,加强烟叶适时成熟采收技术等措施来应对不利气候因子的影响。

For improving the utilization rate of climate resource and resistance to natural disaster, the climatic conditions at different tobacco growing stages in Baihe, Shaanxi Province were analyzed, climate feasibility index （CFI） was estimated, and the major climatic factors causing the fluctuation of CFI in Baihe were found out. The results showed that Baihe＇s CFI was 83.9±9.7, it varied widely from year to year. The major negative factors affecting the climatic feasibility of Baihe were higher average daily temperature during maturing stage and seriously deficient rainfall during fast growing and maturing stages. Therefore, the measures such as early transplanting aided by film mulching, construction of watering facilities and timely harvesting ripe tobacco leaves should be adopted to deal with the impact of unfavorable climatic factors.