期刊
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
卷 29, 期 12, 页码 17570-17579出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-021-16983-9
关键词
Reclaimed water; Soil nutrients; Microbes; Actinomycetes; Fungus; Total salinity
资金
- National Key Research and Development Project of China [2017YFD0800900]
- National Natural Science Foundation of China [:51109197]
This study found that the effects of irrigation with reclaimed water on soil characteristics and plants are complex, with different plants showing varying levels of adaptability to water quality and nutrient absorption capacity. While reclaimed water irrigation can impact soil salinity and microbial populations, other soil characteristics such as pH remained relatively stable.
In this paper, the effects of irrigation with different water qualities on the soil characteristics of 8 kinds of garden plants were analyzed. The results showed that soil pH (ranging at 7.76-8.73) had no significant difference in different soils compared with the contrast treatment. Under the reclaimed water irrigation, the content of soil total salinity, chloride ions, and water soluble sodium in soil of most plants was averagely 160.3%, 83.3%, and 67.5% higher than that of tap water, respectively. The influences of reclaimed water irrigation on soil nutrients were changed with the types of plants. The content of soil organic matter and the available potassium showed no significant differences in most plants. Compared with the tap water irrigation, the content of alkaline nitrogen in 5 plants increased (averagely 25.8%) after 5-year irrigation with reclaimed water. In terms of soil microorganism, the increase of soil microbial population, including bacteria, fungus and actinomycetes, has been promoted by different levels of reclaimed water irrigation, which is closely related with soil nutrients.
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