【摘要】 对 2 0 0 0 ,2 0 0 1年营造的南洋楹幼林随冬季气温变化的冻害情况进行了调查 ,并在冻害发生后对受害植株采取了不同的补救措施。结果表明 ,南洋楹幼树的耐寒性较差 ,其抗寒性随林龄的增长而有所增强 ,1年生幼树在气温为 5℃左右时 ,就有可能遭受冻害 ,当有霜冻或 0℃以下的低温持续时间较长时 ,幼树可能会全株冻死 ;2年生幼树的抗寒性较强 ,在气温降到 - 3℃左右时 ,植株受害程度仍较轻。在冻害发生后 ,及时采取适当的补救措施如截干、培土、抚育、施肥等 ,可促使受害植株提早萌芽生长 ,恢复成林 ,降低损失。更多还原

【Abstract】 The temperature change in winter and the situation of freeze injury of Paraserianthes falcataria young tree were investigated, and different remedy had been taken to save the freeze injury trees after freeze injury happens. The results showed that the cold resistance of Paraserianthes falcataria young tree was relatively bad, and the cold resistance strengthened with the increase of the age. When the temperature was about 5℃, one year old tree may suffer freeze injury, when there were frosts or the lasting time of low temperature under 0℃ was relatively long, one year old tree may die completely. The cold resistance of 2 year old tree was relatively strong, when the temperature dropped to about 3℃, the degree of freeze injury was still relatively light. After freeze injury happens, taking the proper remedy (such as cutting, earth up, nurture, fertilization et al ) in time can impel the freeze injury tree to sprout and grow in advance, thereby resuming into the woods and reducing the loss.更多还原