部分珍贵树种耐水淹试验研究

Study on submergence tolerance experiment of some precious species

为保护和利用中亚热带珍贵树种，采用人工池盆栽水淹试验的方法，研究了55个树种的耐水淹特性。水淹73d后有9个树种未出现形态伤害，15个树种叶萎蔫后能恢复原状，30个树种死亡；水淹引起死亡的天数为48～68d的树种有16种，小于47d的15种；为全光照38．79％（平均照度为8094k）的遮荫处理增强树种耐水淹力的效果最好；55个树种可分为5个耐水淹等级。同时，根据树种耐水淹能力的综合评价结果，进行了树种耐水淹能力排序。55个树种间无论在形态伤害及其程度，水淹引起死亡天数和综合评价得分上都存在显著差异。有些耐水淹能力强的树种同时也有较强的耐干旱力，有些则相反。

In order to protect and utilize the precious trees of subtropics, the enduring waterlogging ability of 55 kinds of trees were researched. The result showed that nine species of trees were not hurted after 73 days of waterlogging. 15 species of were resumed after withered and 30 kind of species were perished. 16 species of trees were died after waterlogging between 48 to 68 days, 15 species of trees were died after waterlogging in 47 days. 55 species of trees can seperate in five levels of submergence tolerance. According to the evalution of enduring waterlogging ability test, the enduring waterlogging abilities of different species of trees were compositored. 55 species of trees were distinct discrepancy. Some species of trees that have stronger enduring waterlogging ability also have stronger enduring drought ability, some trees have the reversed results.