关键词: 南平烟区, 南平烟区, 植烟土壤, 土壤肥力, 适宜性, 综合评价, 障碍因子

Abstract: Study on wind hazard level for banana of different planting cycles is important for choosing suitable planting cycle and taking disaster preventing and mitigating measures. The author used daily extreme wind speed data from representative meteorological stations of Guangdong’s 3 main banana producing areas to construct wind hazard index for different planting cycles and then analyzed the wind hazard days for spring-plant and autumn-plant bananas, using methods of trend analysis and comparative analysis. The results showed that: average gale days for Panyu, Gaozhou and Xuwen were 1.9, 3.7 and 3.9, respectively. From 1997 to 2012, Gaozhou’s gale days have decreased by 3.7 d/10 a, while Panyu and Xuwen’s gale days had not change significantly. On average, 91% of the windy days occurred during April to October, which covered autumn-plant banana’s budding phase and harvesting phase (April to August); probabilities of medium wind hazard for autumn-plant banana for Panyu, Gaozhou and Xuwen were 0.33, 0.73 and 0.73, respectively. The numbers of heavy wind hazard for 3 region were 0, 0.47 and 0.2, respectively. Generally, autumn-plant bananas had higher exposure, comparing with spring-plant bananas, because there were more wind hazard during autumn-plant bananas’ budding phase and harvesting phase. As for the three main banana producing areas, Gaozhou had the highest wind risk, Xuwen the second highest and Panyu the lowest.