3个引进树种苗期光合速率研究  

Study on Photosynthetic Rate of Three Introduced Tree Species

作　　者：冯健[1] 王骞春[1] 颜廷武[1] 

机构地区：[1]辽宁省林业科学研究院,辽宁沈阳110032

出　　处：《安徽农业科学》2014年第28期9804-9805,共2页Journal of Anhui Agricultural Sciences

基　　金：国家林业局"948"项目(2012-4-39);辽宁省科学技术计划重大项目(2011207002)

摘　　要：[目的]为了选择适合辽宁地区生长的速生、优良树种.[方法]用Li-6400便携式光合仪测定研究了3个引进树种苗期光合效率.[结果]小干松、黄松、班克松的净光合速率均表现出“单峰型”.3个树种的蒸腾速率有差异,其中小干松和黄松为单峰型,而班克松蒸腾速率为双峰型.10点时,3个树种净光合速率差异范围为43.57～ 58.74 μmol/（m2·s）,从大到小排序为黄松、小干松、班克松;蒸腾速率差异范围为15.68～21.92 μmol/（m2·s）,从大到小排序为小干松、黄松、班克松.在12点时,3个树种净光合速率差异范围为48.39 ～ 60.35 μmol/（m2·s）,从大到小排序为小干松、黄松、班克松;蒸腾速率差异范围为15.78～17.93μmol/（m2·s）,从大到小排序为黄松、班克松、小干松.[结论]黄松、班克松、小干松这3个引进的树种均适应在辽宁地区生长.[Objective]In order to select the suitable tree species for Liaoning area.[Method]We used the Li-6400 portable photosynthesis system to study the photosynthetic efficiency of 3 introduced species.[Result]The experimental results show that,Pinus contorta,Pinus ponderosa,Pnius banksiana photosynthetic rate showed single peak type.There are differences between the transpiration rates of 3 species,Pinus contorta and Pinus ponderosa are single peak,while Pnius banksiana transpiration rate for two-peak pattern.The 10 am.,3 species difference range of net photosynthetic rate is 43.57-58.74 μmol/（m2 · s）.Transpiration rate difference range is 15.68-21.92 μmol/（m2 · s）.In the 12 am.,3 species differences range of net photosynthetic rate is 48.39-60.35 μmol/（m2 · s）.Transpiration rate range is 15.78-17.93 μmol/（m2 · s）.[Conclusion]The results showed that 3 species are suitable for growing in Liaoning area.

关 键 词：小干松 黄松 班克松 光合速率 蒸腾速率 光合作用 

分 类 号：S791.24[农业科学—林木遗传育种]