衡阳丰乐五号西瓜空心畸形事件调查及气候影响分析

Investigation of Hollow and Malformation of the Watermelon as well as analysis of climate impacts in Hengyang

2009年6月衡阳丰乐五号西瓜出现空心、畸形现象,果农经济损失惨重。经相关部门多次调查发现,5月下旬持续低温阴雨天气是造成该事件发生的主要原因,栽培管理不当导致灾损进一步发展。历史数据分析表明,衡阳5月低温天气发生频率为67.57%,主要出现在上旬后期—中旬前期。进入新世纪以后,低温发生频率减少,强度减弱。对西瓜提前栽种似乎更加有利,但由此所带来的风险更大,为了保险起见,应大力推进设施栽培,采用小拱架双膜覆盖等栽培技术。

Due to the hollow and malformation of the 5th Fengle watermelon in Hengyang, the economic loss of fruit growers was serious. By the relevant departments multiple research, the main cause of the incident was the continuous weather of low temperature and overcast, cultivation mismanagement caused the further development of the disaster. The historical data analysis showed that the frequency of the low temperature in May was 67.5% in Hengyang, and the low temperature mainly appeared in the late of first ten days to prophase of middle-May. The frequency of low temperature decreased and the intensity weakened in the new century. Protected cultivation was promoted vigorously and the cultivation technique such as arch double-film covering planting was used for avoiding the risk of the planting beforehand for watermelon, although the planting beforehand seemed to be more profitable.