2013-2014年冬春昆明主要园林植物冻害调查分析

摘要

The freezing injury on the main garden plants in Kunming city were investigated and analyzed under a sustained low temperature in the winter and spring of 2013 -2014.The results showed that 22.41% of the total 366 common species suffered "severe"and "very severe"injury grades.Among them,86.25% species were trop-ics -distributed types.Herbs were more vulnerable than wooden plants.The freezing injury degrees of the plants were also related with their habitats,greenland types,planting modes and biological characteristics etc..According to these results,some suggestions about reduction and prevention of garden plants freezing damage in Kunming city were also proposed in this paper.%2014年1—4月通过对昆明市主要园林植物在2013—2014年冬春季的持续低温气候条件下遭受冻害的情况进行调查，分析其冻害特点及影响因子。结果表明：在366种常见园林植物中，受冻害等级为“严重”和“极严重”等级的占调查植物种类的22．41％，其中86．25％的植物种类为热带分布类型，且草本及花卉类植物更容易受害；植物的受害程度还与栽培区域小气候及生物学特性等因素有关。提出了预防园林植物冻害的建议，供昆明市园林植物防冻害保护作参考。