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切除顶技对加拿大伊乐藻生长的影响
Authors
倪乐意
Publication date
1 January 1999
Publisher
Abstract
切除5cm顶枝使加拿大伊乐藻生物量立即下降28%,净光合作用速率(Pn)和植株光合作用产量(PhP)与对照相比立即下降50%以上,去顶也对各种生长指标造成不同程度的即时损伤。经过随后28d的生长试验后,处理组与对照相比,生物量和总枝长(主枝+侧枝)增长率分别下降45%和53%,主枝伸长几乎停止;侧枝(分枝)数增长略有下降;水分含量明显增加;试验期间Pn平均下降了40%,PhP平均下降了51%.表明去顶对生物量增长、主枝伸长和冠层的发育有明显的抑制,对分枝数没有明显的影响。光合产量较生物量增长幅度的下降明
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Institute of Hydrobiology, Chinese Academy Of Sciences
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Last time updated on 15/03/2018