【作者】 周陆波；

【导师】 韩烈保；

【作者基本信息】 北京林业大学 ， 森林培育， 2005， 硕士

【摘要】 本研究是“863”计划“北方半干旱都市绿地灌溉区节水综合技术体系集成与示范”和奥运科技专攻项目“奥运公园再生水补水技术与环境安全研究”的一部分,分小区试验和实地调查两部分开展再生水水质、再生水灌溉对草坪土壤化学性质、土壤微生物、草坪草矿质元素含量以及草坪草的生长和综合抗性等方面的影响研究,其主要结论如下: 1.再生水是指二级处理或二级处理以上的污水。再生水水质研究表明,所有再生水（不包括反渗透）的水质质量除凯氏氮外,都高于农田灌溉水标准。高碑店三级水是传统处理的一般三级水,超滤、微滤是较为先进的三级水,反渗透是深度三级处理水,其水质标准接近蒸馏水。 2.二级水营养成分和重金属成分都比较高,但本试验和相关研究表明重金属在土壤过多累积的威胁很小;高碑店一般三级水和超滤、微滤的营养成分含量和二级水相近,但重金属含量和自来水相近,具有较高的灌溉优势,但随后研究表明微滤水中可能余氯含量过多,大大削弱了这种优势。反渗透水质并不适合用作灌溉水源。 3.无论短期再生水灌溉还是长期再生水灌溉,对草坪土壤重金属含量的影响都不显著,再生水灌溉10多年后,草坪土壤中的重金属含量和一般土壤背景值差不多,远低于污染标准。 4.长期灌溉再生水和短期灌溉再生水对草坪土壤的pH都没有显著影响;长期灌溉二级水和一般三级水能显著增加草坪土壤盐分（土壤EC）,但只是警戒值的1/9,对草坪草生长无不良影响。 5.在短期灌溉试验中,对比自来水灌溉,再生水灌溉除微滤外,对草坪土壤的肥力因子没有显著影响。微滤灌溉后草坪土壤有机质显著下降,NH₄⁺、NO₂^-含量显著上升,变化较异常。长期灌溉二级水和一般三级水,对土壤肥力的影响较复杂,土壤中的N素水平和有机质比自来水灌溉区略低,但土壤速效P含量显著比自来水灌溉区高。 6.长期再生水灌溉的调查表明,对比自来水灌溉,二级水和一般三级水灌溉对草坪土壤的细菌总数、放线菌总数和真菌总数都没有显著影响。短期试验结果表明,反渗透和超滤灌溉能显著增加草坪土壤的细菌总数;微滤灌溉能显著增加草坪土壤的放线菌总数,但都对草坪土壤真菌总数没有显著影响。 7.对比自来水灌溉,长期灌溉二级水和一般三级水能较为明显地增加草坪草叶部重金属、Ca、Cl^-和盐分Na⁺含量,但对草坪草生长无不良影响。短期再生水灌溉和长期再生水灌溉对草坪草的N、P等营养元素含量都没有显著影响。 8.对比自来水灌溉,短期再生水灌溉和长期再生水灌溉对草坪草的综合抗性都没有更多还原

【Abstract】 This research on reclaimed water irrigation of urban turf, consisting of two parts: plot experiment and investigation, is a part of "National 863 Programs" for "Integtation and Demonstration of Water-saving Irrigation Technology for Urban Green Space of Semi-arid Area in Northern China" and Beijing Olympic Scientic Research Programs " Research on Reclaimed Water Supply Technology and It’s Environmental Security" .This research conducts a series of studies, including: study of water quality for irrigation; influence of reclaimed water on turf soil chemical property, on turf soil microorganism, on turf leaf mineral content, and on turf growth & resistance ability against environmental adversity. The whole conclusion of this research is written below:1. Reclaimed water includes secondary effluent and more advanced treated wastewater. The study of water quality for irrigation suggests that: all of the quality indexes of reclaimed water, except Kjeldahl Nitrogen, are higher than National Standard of Water Quality for Field Irrigation. Tertiary effluent of Gao-beidian is a kind of traditional tertiary wastewater treatment, UF and MF are more advanced, RO is the deepestly treated water, whose quality is near to distilled water.2. Nutrient content and heavy metals content of secondary effluent (SE) is higher, but the study shows that threaten of heavy metals over-accumulation is little after SE irrigation. Nutrient content of Tertiary effluent of Gao-beidian, MF and UF are near to SE, but their heavy metals content is near to Tap Water, thus, they have irrigation advantage, but the following study show that the redundant residual CL" in MF water may somehow take off this advantage. RO is not suitable for a irrigation water source.3. For both short-termed and Long-termed reclaimed water irrigation, there is no significant impact on soil heavy metal content, after 10 years reclaimed water irrigation, heavy metals in turf soil is near to common background, far below to pollution standard.4. There is no significant impact on soil pH for both short-termed and long-termed reclaimed water irrigation. The soil EC is significantly higher than the Tap Water irrigated turf after Long-termed common tertiary water and secondary effluent irrigation, but is only 1/9 of Alert, and has no bad effect on turf growth.5. Comparing with Tap Water irrigation, the short-termed plot experiment shows that, except MF, reclaimed water irrigation has no significant effect on turf nutrient factors. After irrigated MF, the OM of turf reduces sharply, and NH4+、NO2- elevated significantly.The situation of influence of long-termed common tertiary water and secondary effluent irrigation on soil nutrient content is more complicated, the N level is a little lower than Tap Water irrigated area, but the content of effective P is apparently higher than Tap Water irrigated turf soil.6. Investigation of long-termed common tertiary water and secondary effluent irrigation shows that, comparing with Tap Water irrigation, there is no significant change in soil Bacteria biomass, Actinomycete Biomass and Eumycete biomass. Short-termed plot experiment shows that UF and RO irrigation can significantly increase soil Bacteria biomass; MF irrigation can significantly increase soil Actinomycete biomass. In the case of Eumycete biomass, all irrigation waters have no significant difference.7. Comparing with Tap Water irrigation, turf leaf heavy metals, Ca, Cl- and Na+ content are apparently higher after long-termed common tertiary water and secondary effluent irrigation, but there is no bad effect on turf growth.There is no significant impact on turf leaf N,P content after both long-term and short-term reclaimed water irrigation.8. Comparing with Tap Water irrigation, there is no significant impact on turf resistance ability against adversity after both long-term and short-term reclaimed water irrigation.9. Comparing with Tap Water irrigation, long-termed common tertiary water and secondary effluent irrigation can increase turf mowing weight, and increase Kentucky Bluegrass’s C更多还原