不同种源杉木蒸腾作用的初步研究

本文对九个种源11年生杉木的蒸腾速率(包括日变化和季节变化)、蒸腾系数等指标进行了测定,分析了种源间的差异、变化规律及其与光合作用、生长量的关系。结果表明,不同种源杉木蒸腾作用具有相对的遗传稳定性,并与光合作用、生长量间存在着一定的相关性。

A Study on Transpiration of Different Provenances in Chinese Fir

The transpiration rates ( diurnal and monthly changes ) and transpir-ation coefficients of provenances of chinese fir were measured under both the controlled conditions of the greenhouse and the field conditions from May. 1988 to Jan. 1989, and the analysises were made on the differences of these indices, the rules of geographical variation among nine provenances as well as the relationships of these indices with the net photosynthetic rates and growth. The results indicated that the transpiration of various provenances of chinese fir have a relative heredity stability and have definite correlations-hip with the net photosynthetic rates and the growth.