干旱区研究2001，Vol.18Issue(1)：57-61,5.
水分胁迫对冬小麦叶片水分生理生态过程的影响
Effects of Leaf Water Physiologically Ecology Process of Winter Wheat on Soil-water Stress Condition
张永强 1姜杰2
作者信息
- 1. 中国科学院石家庄农业现代化研究所
- 2. 河北师范大学资源与环境学院
- 折叠
摘要
Abstract
Under different soil-water conditions, the leaf water physiological factors of winter wheat have been measured continually. The results show that diurnal patterns of photosynthesis rate and transpiration rate have been advanced under soil-water stress condition, and stomatal conductance under the stress condition is bigger than that under the no water stress conditions in the morning, therefore, the crop can make use of the limited soil-water under the stress condition. The transpiration rate can be controlled more readily than the photosynthesis rate by the stomata under the soil-water stress condition. And under the different soil water conditions on different crop growth stages, the stomatal resistance is the most relative to soil moisture of the soil lays from zero centimeter to 40 centimeter, and the relative curve can be simulated by the hyperbola. When the soil moisture from zero centimeters to 40 centimeters is approximately equal to 0.25m3m-3, the stomatal resistance will reach to the least because of the maximum stomatal open degree.
关键词
水分胁迫/光合速率/蒸腾速率/气孔阻力分类
农业科技引用本文复制引用
张永强,姜杰..水分胁迫对冬小麦叶片水分生理生态过程的影响[J].干旱区研究,2001,18(1):57-61,5.
