| 2011年初春持续低温对邓恩桉生长的影响 |
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| 引用本文： | 卢新瑛.2011年初春持续低温对邓恩桉生长的影响[J].甘蔗(福建),2011(2):100-104. |
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| 作者姓名： | 卢新瑛 |
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| 作者单位： | 福建省大田梅山林业站,福建大田366100 |
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| 摘 要： | 调查了福建省大田县梅山乡3年生和1年生邓恩桉遭受2011年初春持续低温后的生长表现（以冻害指数为指标）。结果表明：不同海拔高度邓恩桉的冻害指数差异极显著,随着海拔高度的升高,邓恩桉冻害指数增大;低温对海拔400 m以下的邓恩桉生长影响不明显,对海拔400-750 m的邓恩桉冻害指数影响极大,导致海拔750 m以上的邓恩桉死亡;同一海拔水平上1年生邓恩桉受冻害的危害明显大于3年生,1年生邓恩桉下坡、中坡和上坡的平均冻害指数差异不显著,3年生邓恩桉下坡、中坡和上坡的平均冻害指数依次显著增大;冻害指数与树高、地经均呈显著负相关,说明随着邓恩桉林龄的增加,树高、胸径生长,抗冻害能力明显增强。
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| 关 键 词： | 邓恩桉 持续低温 冻害指数 |
Effect of continuous low temperature on the growth of Eucalyptus dunni in early spring of 2011 |
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| LU Xin-ying.Effect of continuous low temperature on the growth of Eucalyptus dunni in early spring of 2011[J].Sugarcane,2011(2):100-104. |
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| Authors: | LU Xin-ying |
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| Institution: | LU Xin-ying(Meishan Forestry Station of Datian County,Datian,Fujian 366100,China) |
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| Abstract: | Freezed indices taken as the indicators,the growth performance of Eucalyptus dunni at 3 years and one year age suffering from the continuous low temperature was investigated in Meishan Township,Datian County,Fujian Province in the early spring of 2011.Difference of freezed indices in E.dunni at different altitudes was extremely significant.With rising of altitude the freezed indices of E.dunni increased.Low temperature affected the growth of E.dunni insignificantly below 400 m of altitude but extremely significantly from 400 m to 750 m of altitude,which caused the death of E.dunni at the altitude higher than 750 m.At the same altitude one year old E.dunni suffered more from freezing than the 3 years old.There was an insignificant difference of the average freezed indices in one year old E.dunni in the order of lower,middle and upper slopes,but there was a significant increase of the average freezed indices in 3 years old E.dunni in the order of lower,middle and upper slopes.Freezed indices were significantly negatively correlated with tree height and ground diameter.It was proved that along with the rising of the age tree height,diameter at breast height,and freezing tolerance of E.dunni increased and improved. |
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| Keywords: | Eucalyptus dunni continuous low temperature freezed index |
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