The effect of reclaimed water irrigation on the water quality of garden plants,rhizosphere soil and shallow groundwater
The effects of reclaimed water irrigation on mineral elements,soil environment and shallow groundwater quality of several common garden plants were studied.The experiment was carried out from 2017 to 2020,and seven kinds of garden plants including plane tree,elm,privet,moon season,horse lotus,iris and begonia were selected for reclaimed water irrigation in the green belt green space on the east side of the Xiaohe Wetland in Luancheng District,Shijiazhuang,Hebei Province.The results showed that the contents of nitrogen,phosphorus,potassium and sodium in the leaves of 7 plants treated with reclaimed water increased by 1.4%～37.7% compared with tap water irrigation.The content of trace elements increased by 0.7%～48.5%;The content of heavy metal elements Cr and Cd increased by 1.9%～22.9% .The copper content increased by 4.4%～22.7%;The total salt content,sodium ion content and pH value of the soil under reclaimed water irrigation were not significantly increased,while the chloride content increased by 25.1%～86.3% .The soil nutrients of the seven plantings increased slightly compared with the control,but there was no significant difference.7 conventional garden plants grew well under reclaimed water irrigation on the Xiaohe River.No abnormal growth was observed and no obvious deterioration of the soil was observed.All the groundwater met the standard except for the total hardness.However,long-term monitoring should be conducted.
万方数据
维普
