我们的网站为什么显示成这样?

可能因为您的浏览器不支持样式,您可以更新您的浏览器到最新版本,以获取对此功能的支持,访问下面的网站,获取关于浏览器的信息:

|Table of Contents|

美国悬铃木种源苗期的性状变异(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2003年04期
Page:
44-46
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
A Study on Character Variation of the P.occidentalis L. Seed Source at Seedling Stage
Article ID:
1000-2006(2003)04-0044-03
Author(s):
FANG Lejin1SHI Jisen2HE Zhenxiang2
1.Huangshan College,Huangshan 245041,China;2.Nanjing Forestry University,Nanjing 210037,China
Keywords:
P.occidentalis L.ProvenancesSeedling periodCharacter variationCold resistance
Classification number :
S722
DOI:
10.3969/j.jssn.1000-2006.2003.04.011
Document Code:
A
Abstract:
This paper summarizes the experiment of growing seedlings which 44 seed sources of(P.occidentalis L.) from 4 states like Mississippi are situated in the middle south of America.The test shows that the growth during the seedling stage is rapid under the geographic and climate conditions of Huangshan area.The height of seedling can reach 92.5 cm in the same year,and the ground diameter can reach 0.75 cm,which presents rapid feature.The tender leaves have obviously distinctive reactions to a low temperature and the first frost,while trunks and lateral buds have not been affected by the cold weather,which demonstrates that different varieties of provenances have strong resistance to the cold and can be adapted to growing in the tropical areas in our country.The difference in the seedling height among the provenances as well as in the growth of the ground diameter has reached a certain level.The excellent provenances of the P.occidentalis L.which have the characteristics of high seedling and quick growth of the ground diameter,are distributed over the area of the lower latitude and the higher longitude in the middle south of America.Among these sources, the Alabama’s L21021#, the Louisiana’s F10821#,the Mississippi’s B11029# and T20220# are superior to the average value,which can be the first to be selected as excellent provenances in the tropical areas in China.

References

-

Last Update: 1900-01-01