【摘要】 植物生长调节剂（MET）能影响蓝藻的生长、固氮活性和区系的组成。166.7×10^-6的 MET 能提高固氮活性24.9%;高浓度(≥1000×10^-6)的 MET 抑制蓝藻生长、但未见发生致死效应;MET 对蓝藻群落组成有影响,有利于鱼腥藻而不利于念珠藻,影响大小随生态环境因子的不同而改变。更多还原

【Abstract】 MET have significant effect on the growing process,N₂-fixation activity and evolution cha- racteristic of N₂-fixing blue-green algae in paddy field in Beijing area.It was observed in the experiment, 166.7×10^-6MET could increase 24.9% of N₂-fixation activity;High concentration of MET(≥1000× 10^-6)could inhibit the growth of N₂-fixing algae,but couldn’t cause its death;effects of MET on the evo- lution of the N₂-fixing algae were advantageous to Anabaena（BA01）,but not to Nostoc（BA03）,its influ- ence would be changed when the ecological environment changes.更多还原