人工污水对桐花树的生长影响

The Effects of Treating Synthetic Municipal Wastewater on Aegiceras corniculatum under Simulated Tidal Condition

正常、５倍和１０倍浓度的人工污水在模拟潮汐的条件下处理红树林植物桐花树１年生幼苗１ａ，测定植株的根长、根径、茎高、茎径、叶片数、生物量、凋落叶量以及开花结果等指标．结果表明：正常和５倍组的这些指标显著或极显著地高于对照组．１０倍组的指标大于或接近对照组；但根长显著低于对照组．以上情况说明：污水处理可以促进桐花树的生长和开花结果。

The one year old seedlings of Aegiceras corniculatum were treated with synthetic municipal wastewater for a year under simulated tidal condition, namely NW,FW and TW three different concentrations NW had the characteristics similar to conventional municipal wastewater, while FW and TW contained five and ten times of the nutrients and heavy metals found in municipal wastewater respectively, 1 5% salinity of artificial seawater as control The inderxes of root lenght, root diameter, stem height, stem diameter, leaves quantities, biomass, fallen leaves, flowering and fruiting of Aegiceras corniculatum plants were examined The results showed that: Treating of synthetic municipal wastenater could stimulat growth of Aegiceras corniculatum plants Those indexes of NW and FW were abviously higher or very obviously higher than that of control And the most indexes of TW were higher or similar to that of control But the TW indexes of root lenght, flowering and fruiting were lower than that of control