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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.
LI-6400 portable photosynthesis system was used to study the physiological and ecological factors that affect the net photosynthetic rate of the elite semi-sibs of Pinus elliottii. The results showed that the major factors that affected the net photosynthetic rate of Pinus elliottii were significantly different The main habitat factors of net photosynthetic rate of coniferous Pinus elliottii 609,1077 were air and soil moisture content, while those affecting families 464,1027,46 were air, soil moisture content and air CO2 concentration, The air and soil water content of the second instar of 508 years affected the air of the first instar of the family 508 and the second stage of the 101th air.The soil moisture, air moisture and CO2 concentration were the wetland The main habitat factors of high yield of pine family.