摘要
利用Li-6400光合仪测定鲜枣叶片光合日变化及水分利用率日变化的关系。结果表明:北疆鲜枣的净光合速率日变化、蒸腾速率日变化均呈单峰型曲线,净光合速率的峰值处于正午14:00,蒸腾速率的峰值处于下午16:00,通过相关性分析表明:鲜枣叶片的光合速率与蒸腾速率极显著正相关(p<0.01),与气孔导度极显著正相关(p<0.01)。从光合特征及水分利用率方面研究了枣树光合机理,为枣树优质丰产奠定了理论基础。
With the Li-6400 system we measured the diurnal changes of photosynthetic characteristic of leaves of jujube and its relationships with water use efficiency. The results showed that the diurnal changes of net photosynthetic rate and transpiration rate were single-apex curves, the peak value of net photosynthetic rate was present at 14:00, the peak value of transpiration rate was present at 16:00. Correlation analysis indicated that net photosynthetic rate was extremely significant positively correlated to transpiration rate(p<0.01) and stomatal conductance(p<0.01). Photosynthetic mechanism of jujube was studied from photosynthetic characteristics and water use efficiency and this provided theoretical basis for high quality and yield of jujube.
出处
《吉林农业科学》
CSCD
北大核心
2014年第3期74-78,共5页
Journal of Jilin Agricultural Sciences
基金
国家科技部农转资金(2010GB2G410606)
新疆生产建设兵团产学研重大项目(2010ZX02)
新疆农垦科学院基金项目(YQJ201310)
关键词
鲜枣
光合特性
日变化
水分利用率
Jujube
Photosynthetic characteristics
Diurnal changes
Water use efficiency
