摘要
水文周期是影响湿地植物生长的重要环境因子,为进一步揭示持续淹水与干湿交替等不同的淹水周期对芦苇生长和光合生理的影响,设计了4个干湿交替处理以及持续淹水控制组,测量了各组芦苇株高生长量、叶绿素含量、气体交换特征以及叶绿素荧光特征等指标。结果表明,干湿交替处理比持续淹水更有利于芦苇的生长,可以增加芦苇叶片的光合速率,提高芦苇的光化学性能,减少热耗散,提高光系统II的活性。干湿交替处理的芦苇叶片叶绿素含量明显高于持续淹水组。因此,在芦苇湿地的生态补水管理中,干湿依次交替有利于芦苇生长以及光合作用的进行,有利于提高芦苇产量。
Water cycle is an important environment factor influencing the growth of plants in wetland.To understand the influence of permanent flooding and dry-wet circulation on the growth and photosynthesis of reed （Phragmites australis）, four water cycles and long-time flooding control groups wereconducted, and the height growth of reed, the chlorophyll content of leaves, the gas exchange andchlorophyll fluorescence characteristics of reed leaves were measured. The results showed that drywetcycle treatments promoted the growth of reed and photosynthesis rate and improved photosynthesis performance, and decreased the heat dissipation, and finally increased the activity of photosystem II ofreed leaves than long-time flooded reeds. The chlorophyll contents of reed exposed to water-dry treatment were higher than that submitted to long-time flooding treatment. Thus, in the ecological water-management for reed, it is important to promote the growth and photosynthesis of reed and finally theproduction of reed by water-dry alternation control management.
出处
《云南农业大学学报（自然科学版）》
CAS
CSCD
北大核心
2012年第5期640-645,共6页
Journal of Yunnan Agricultural University:Natural Science
基金
中国科学院知识创新工程重要方向性项目子课题(KZCX2-YW-Q06-2)
关键词
淹水周期
芦苇
光合作用
叶绿素荧光
water cycle
Phragmites australis
photosynthesis
chlorophyll fluorescence
