摘要
在室内模拟条件下,利用三种不同营养状况的底质,研究了底质营养对黑藻生长及光合作用的影响,结果表明:(1)营养水平最高的HH底质对黑藻的早期生长和光合有利,但在高温季节会严重降低黑藻的根系活力和叶绿素含量,影响黑藻后期生长;(2)TR底质营养水平较低,该处理下黑藻生物量累积量较低;(3)HK底质能够充分满足黑藻生长的营养需求,且在高温季节对黑藻的生长和光合有利。相关分析表明,底质营养状况是影响黑藻生长的重要因素。
A culture experiment was conducted to study the effects of three kinds of sediments with different nutrition status on the growth and the photosynthesis of Hydrilla verticillata in the laboratory. The results showed： （1） the sediment （HH） with the highest nutrient could accelerate the growth and the photosynthesis of Hydrilla verticillata in early growing stage, but at high temperature season it could decrease root vigor and chlorophyll content of Hydrilla verticillata, and affect later growth of Hydrilla verticillata. （2） The TR sediment with lower nutrition level inhibited the biomass accumulation of Hydrilla verticillata. （3） The HK sediment could provide enough nutrition for Hydrilla verticillata, and it was favorable for the growth and the photosynthesis of Hydrilla verticillata at high temperature season. Relative analyses indicated that nutrition status of sediment is very important for the growth of Hydrilla verticillata.
出处
《生态环境》
CSCD
北大核心
2006年第4期702-707,共6页
Ecology and Environmnet
基金
国家重点基础研究发展规划项目(2002CB412304)
关键词
底质
黑藻
光合作用
根系活力
sediment
Hydrilla verticillata
photosynthesis
root vigor
作者简介
楚建周（1978-），男，硕士研究生，主要从事水生植物的生理生态学研究。Tel：＋86-312-7528220；E-mail：cjz01me@126．com
责任作者：E-mail：Jinxiang@public．bta．net．cn
