个杨树无性系蒸腾特性及其影响因子研究

摘要：对山东省高密地区不同杨树无性系的蒸腾特性及其影响因子进行了研究，结果表明：16个杨树无性系的气孔导度日变化均为单峰型；蒸腾速率与气孔导度的日变化趋势大致相同，16个杨树无性系日平均气孔导度(GS)和蒸腾速率(Tr)的大小次序为：Gs(卡帕茨)>Gs(T66)>Gs(高1号)>Gs(I 109)>Gs(中黑防)>Gs(中林2001)>Gs(80 2 9)>Gs(黑林1号)>Gs(NL895)>Gs(NL1388)>Gs(中林2025)>Gs(窄11号)>Gs(L324)>Gs(I 110)>Gs(窄055)>Gs(黑林3号); Tr(卡帕茨)>Tr(T66)>Tr(高1号)>Tr(I 109)>Tr(中黑防)>Tr(中林2001)>Tr(80 2 9)>Tr(黑林1号)>Tr(NL895)>Tr(NL1388)>Tr(中林2025)>Tr(窄11号)>Tr(L324)>Tr(I 110)>Tr(窄055)>Tr(黑林3号). 蒸腾速率与气孔导度的相关性最显著，并主要受光合有效辐射和空气温度等外界环境因子的影响，与空气相对湿度呈负相关关系. 根据以上指标，筛选出适宜在当地推广的杨树无性系.

Transpiration characteristics and its influencing factors of sixteen polar clones

The transpiration characteristic and its influencing factors were studied based on the observation and research of the samples selected from 16 varieties of poplar clones induced in Gaomi city east of Shandong province.The results show that the general daily changing tendency of 16 poplar clones is generally unanimous with single-apex curve.In addition,changing tendency of transpiration rates is just the same as that of the stomatal conductance.The daily stomatal conductance and transpiration rates are of the following order,(G_(s(Kapaci))>G_(s(T66))>G_(s(Gao1hao))>G_(s(I-109))>G_(s(Zhongheifang))>G_(s(Zhonglin2001))>G_(s(80-2-9))>G_(s(Heilin1hao))>)G_(s(NL895))>G_(s(NL1388))>G_(s(Zhonglin2025))>G_(s(Zhai11hao))>G_(s(L324))>G_(s(I-110))>G_(s(Zhai055))>G_(s(Heilin3hao));T_(r(Kapaci))>T_(r(T66))>T_(r(Gao1hao))>T_(r(I-109))>T_(r(Zhongheifang))>T_(r(Zhonglin2001))>T_(r(80-2-9))>T_(r(Heilin1hao))>T_(r(NL895))>T_(r(NL1388))>T_(r(Zhonglin2025))>T_(r(Zhai11hao))>T_(r(L324))>T_(r(I-110))>T_(r(Zhai055))>T_(r(Heilin3hao)). The mutuality between transpiration rates and stomatal conductance is the most prominent,which is affected mainly by the outer environment factors.The mutuality between transpiration rates and air relative humidityis negative.Based on the above discussion,it is suggested to apply the poplar clones in that region.