安徽农业科学2011，Vol.39Issue(13)：7744-7747,4.
梭梭和多花柽柳幼苗光合特性对不同水分梯度的响应
Research on the Response of the Photosynthetic Characteristics of Haloxylon ammodendron and Tamarix hohenackeriSeedling to Different Water Gradient
摘要
Abstract
[ Objective ] The variation of photosynthetic characteristics of Haloxylon ammodendron and Tamarix hohenackeriseedling under different water gradient was researched. [ Objective] The net photosynthetic rate, the transpiration rate, the water-using efficiency, the stomatal conductance and the concentration of intercellular CO2 of Haloxylon ammodendron and Tamarix hohenackeri under different water gradient were measured with Li-6400. [ Results] The variation curve of the daily variation of net photosynthetic rate of Haloxylon ammodendron and Tamarix hohenackeriseedling showed the obvious midday depression and at same condition the value of the daily variation of net photosynthetic rate of Haloxylon ammodendron was larger than that of Tamarix hohenackeri. There was not obvious principle of the daily variation in transpiration rate of them with the reduction of irrigating amount and the value of the daily variation of net transpiration rate of Haloxylon ammodendron was less than that of Tamarix hohenackeri. The different water gradient did not significantly affect their water-using efficiency and at same condition thewater-using efficiency of Haloxylon ammodendron was higher than that of Tamarix hohenackeri. The largest value of the stomatal conductance and the concentration of intercellular CO2 of Haloxylon ammodendron and Tamarix hohenackeri was in gradually morning, then gradually reduced to least value and finally raised again. [ Conclusion ] The photosynthetic characteristics of Haloxylon ammodendron and Tamarix hohenackeri seedling under different water gradient were preliminarily explored.关键词
梭梭/多花柽柳/水分梯度/灌溉量/光合特性/水分利用效率/响应Key words
Haloxylon ammodendron/ Tamarix hohenackeri/ Water gradient/ Irrigating amount/ Photosynthetic characteristics/ Water-using efficiency/ Response分类
农业科技引用本文复制引用
宁虎森,吉小敏,高明月,李磊..梭梭和多花柽柳幼苗光合特性对不同水分梯度的响应[J].安徽农业科学,2011,39(13):7744-7747,4.基金项目
国家"973"项目(2006CB705809-3-1) （2006CB705809-3-1）
国家"十一五"林业科技支撑计划课题项目(2006BAD26B0902). （2006BAD26B0902）
