寒害天气对永州市赤桉组培苗造林的影响

Effect of Freezing Damage Climate on Eucalyptus camaldulensis Plantations from Tissue Culture Seedlings in Yongzhou City

2004年冬季永州市经历了严重的寒害天气。灾害过后,调查了东安县种植的赤桉组培苗受冻和冻后恢复情况,分析比较了赤桉组培苗种植后的耐寒性和冻后恢复能力。调查结果表明:2004年冬季是永州市罕见的寒害天气,所有引种的桉树幼林均受到不同程度的冻害,但赤桉组培苗幼林受冻程度较轻,冻后恢复较快,类似2004年冬季的寒害天气,对永州市赤桉组培苗造林没有影响。根据永州南桉北移造林的现状,提出了发展桉树产业的建议。

Severe freezing damage climate occurred in Yongzhou in 2004.After the climate disaster,the situation of young eucalypt seedlings frozen and its recovery were investigated and analyzed,and cold tolerance and recovery of eucalyptus were compared. The results indicated that freezing damage climate in 2004 was very rare and almost all of new forest introduced had suffered damage to some degree. But the young eucalypt forests had a slighter damage and recovered itself quickly. The other freezing damage climate like 2004 had even not the slightest effect on eucalypt plantations in Yongzhou. According to the current situations that Yongzhou was developing the eucalyptus from southern counties to northward,the suggestions of developing eucalyptus industry were given.