摘要
采用示范区绿地调查的方法,研究了再生水灌溉对北京地区有代表性的园林植物生长状况的影响,并采集植物叶片和立地土壤进行相关指标的化验分析。结果表明,再生水灌溉区植物生长良好,叶色正常,试验期内大部分植物外观未见有明显异常现象;叶片矿质元素总体上表现出升高的趋势;银杏、油松、连翘、紫薇、榆叶梅、玉兰、栾树等植株叶片内钠元素含量增加,钾元素含量则有所下降;叶片矿质元素含量均在正常范围内;土壤中全盐量、水溶性钠、交换态钠和氯化物均表现出升高趋势,但目前尚未达到盐害水平。最后对加强再生水在园林中的应用提出了几条建议。
Using reclaimed water to irrigate the city soil is an important way to save the clean water. Greenland investigation is adopted to study the growth of representative landscape plants irrigated with reclaimed water and chemical analysis of the leaves and the soil is also conducted. The results show that there is no obvious difference between reclaimed water and tap water irrigation. There is an increase of sodium in the leaves of some plants, such as Ginkgo biloba, Pinus tabulaeformis, Forsythia suspensa, Lagerstroemia indica, Prunus triloba, Magnolia denudata, Koelreuteria paniculata, while nitrogen, phosphorus, potassium remain steady. The salt content, water-dissolvable and exchangeable sodium, and chloride increase in the soil, but the level was still safe for the plants. Some suggestions are put forward in order to strengthen the use of reclaimed water in the landscape green space.
出处
《中国园林》
2007年第2期62-65,共4页
Chinese Landscape Architecture
基金
北京市科学技术委员会(编号D0605001040491)资助
关键词
风景园林
再生水
研究
土壤
影响
Landscape Architecture
Reclaimed Water
Study
Soil
Effects
