论文部分内容阅读
以2008年初极端低温胁迫对广西香蕉产业造成严重影响为启示,针对各地香蕉寒冻害危害情况调查标准不统一,对寒冻害造成损失的评估存在差异等问题,将香蕉寒冻害划分为5个等级,并在等级划分的基础上进一步确定综合灾损,最终完成了广西香蕉寒害冻害等级指标及其灾损评估标准的制定。对广西各地可能发生寒冻害的时间和概率进行具体分析,统计情况表明,广西香蕉主产区开始发生1级、2级寒害的时间分别为11月上旬和12月上旬,平均发生概率达到50%以上,并造成10%~20%的综合灾损;12月下旬至1月下旬期间还可能出现3至4级的严重冻害,综合灾损大于30%。
Inspired by the extreme low temperature stress at the beginning of 2008 in Guangxi banana industry, the banana frost damage is divided into 5 grades according to the survey standards of banana freezing injury hazards are not uniform and the assessment of the losses caused by frost damage are different. Based on the classification, the comprehensive disaster loss was further determined, and finally the grade index of freezing damage damage of Guangxi bananas and the formulation of disaster assessment standards were completed. The analysis of the time and probability of frost damage likely occurred in various areas of Guangxi shows that the occurrence time of first grade and second grade of cold injury in the main producing areas of Guangxi are respectively in early November and early December, with an average probability of 50% , And caused 10% to 20% of the comprehensive disaster; from late December to late January may also occur from 3 to 4 serious frost damage, comprehensive disaster damage is greater than 30%.