湿地松优良半同胞家系净光合速率影响因子的相关性分析  

Correlation Analysis of the Physi-ecological Factors Affecting the Photosynthetic Rate of Slash Pines' Half-sib

作　　者：童方平[1] 徐艳平[1] 宋庆安[1] 龙应忠[1] 易霭琴[1] 黄顺成 佘红 陈文杰 李贵[4] 

机构地区：[1]湖南省林业科学院,湖南长沙410004 [2]桃源县林业科学研究所,湖南桃源415700 [3]国有桃源县苗圃,湖南桃源415700 [4]中南林业科技大学,湖南长沙410004

出　　处：《中南林业科技大学学报》2008年第4期72-77,共6页Journal of Central South University of Forestry & Technology

基　　金：湖南省自然科学基金"湿地松纸浆材优良家系高产的生理生态机理研究(05JJ3072)"

摘　　要：利用LI-6400便携式光合测定系统,对影响湿地松优良半同胞家系净光合速率的生理生态因子进行了研究与分析,结果表明:影响湿地松各家系净光合速率的主要生境因子不一致,显著影响湿地松家系609、1077针叶净光合速率的主要生境因子为空气和土壤水分含量,而影响家系464、1027、46的则是空气、土壤水分含量和空气CO2浓度,影响家系101一龄针叶、508二龄针叶的为空气和土壤水分含量,影响家系508一龄针叶、101二龄针叶的为空气、土壤水分含量和空气CO2浓度.适宜的土壤、空气水分和CO2浓度是湿地松家系高产的主要生境因子.By using LI-6400 portable photosynthesis determination system, the paper conducted an analytical study of the physiecological factors affecting the photosynthetic rate of slash pines＇ half-sih. Results show that the physi-eeologieal factors making main effects are quite different; and that the main factor affecting the rate of clone 609 and 1077 is water content in air and soil, the main factor affecting that of clone 464, 1027 and 46 is water content in air and soil, and carbon dioxide from atmosphere, the main factor affecting that of clone 101＇s 1-year-old needles and 508＇s 2-year old needles is also water content in air and soil, and the main factor affecting that of clone 508＇s 1-year-old needles and 101＇s 2-year-old needles is water content in air and soil, and carbon dioxide from atmosphere. Appropriate water content in air and soil and proper carbon dioxide concentration from atmosphere are the key ecological factors to the fast growth and high yield of slash pines＇ half-sib.

关 键 词：植物生理学 非直线双曲线模型 净光合速率 生理生态因子 半同胞家系 湿地松 

分 类 号：S718.43[农业科学—林学]