摘要
对2000-2001年在翁源九曲水林场的2块南洋楹耐寒性表证试验林进行观测,结果表明,在正常生长条件下,3年生南洋楹林年均树高、胸径生长量可达3．28 m和4．08 cm。在连续10 d出现霜冻天气、最低气温1-8℃的条件下,南洋楹开始出现枝叶干枯等冻害现象。南洋楹耐寒性随着年龄的增长而逐渐增强,同一坡面树木从上坡至下坡受冻害程度逐渐加重。种源/家系间的耐寒性存在遗传差异,初步筛选出2 个早期表现优良的耐寒种源/家系N1、P16,其耐寒性显著高于广东饶平对照种。
The result of study of cold resistance in two Paraserianthesfalcataria experimental forest afforested in 2000 and 2001 years in the Jiuqushui forest farm of Wengyuan shows that in normal growing condition, the average height and breast - height diameter of three - year - old Paraserianthes falcataria is 3.28 cm and 4.08 cm. Ten days long frost weather and the lowest temperature is from 1 to 8℃ can make the branch and leaves of Paraserianthes falcataria become dry up or other freeze injury phenomenon come up. The cold resistance of Paraserianthes falcataria strengthened with growth of the age. In the same slope the degree of freeze injury aggravated with the increase of incline angle. Different provenance/families have hereditary difference of cold resistance between them. N1 ,P16 is best two provenance/family selected from them. The cold resistance of the two is far better than the Rao- ping species in Guangdong.
出处
《广东林业科技》
2006年第1期9-13,共5页
Forestry Science and Technology of Guangdong Province
关键词
南洋楹种源/家系
生长
耐寒性
选择
Paraserianthes falcataria, provenance/family, grow, cold resistance, select
