CAJ | 학술논문

土壤性能和土壤微生物是再生水灌溉对环境安全效应评价的重要指标.通过模拟试验,以北京高碑店污水处理厂生产的再生水浇灌大豆为例,分析了收获期土壤理化特性及微生物类群变化.结果表明,再生水灌溉能够在一定程度上提高土壤肥力,表现为有机质和有效磷显著增加;土壤重金属铅、镉含量相对清水和土壤本底无明显增加,但土壤溶液电导值(EC)增加显著,在一定程度上造成盐度累积.在土壤微生物方面,再生水灌溉使土壤细菌数量相对清水灌溉处理增加;二级再生水和三级再生水灌溉处理间的放线菌数量差异显著,且明显高于清水对照;再生水灌溉对真菌数量影响不大.再生水灌溉使大豆根际土壤脲酶活性增加,碱性磷酸酶活性最高.土壤微生物数量、酶活性与土壤养分含量之间呈显著相关关系,可作为评价土壤肥力和土壤环境质量的指标.
토양성능화토양미생물시재생수관개대배경안전효응평개적중요지표.통과모의시험,이북경고비점오수처리엄생산적재생수요관대두위례,분석료수획기토양이화특성급미생물류군변화.결과표명,재생수관개능구재일정정도상제고토양비력,표현위유궤질화유효린현저증가;토양중금속연、력함량상대청수화토양본저무명현증가,단토양용액전도치(EC)증가현저,재일정정도상조성염도루적.재토양미생물방면,재생수관개사토양세균수량상대청수관개처리증가;이급재생수화삼급재생수관개처리간적방선균수량차이현저,차명현고우청수대조;재생수관개대진균수량영향불대.재생수관개사대두근제토양뇨매활성증가,감성린산매활성최고.토양미생물수량、매활성여토양양분함량지간정현저상관관계,가작위평개토양비력화토양배경질량적지표.
Soil performance and the microorganism are important indexes and aspects on evaluating environment effect of imgation with re-claimed water. The research was used pot experiment to study reaction of performance and the microorganism groups in soil root zoon of planting soybean under imgating with second grade and third grade reclaimed water. The result indicated that irrigation with reclaimed water could improve soil fertility, the organic material and available phosphor were increased. markedly. The heavy metal lead(Pb), cadmium(Cd) of the soil had no significantly accumulation. The electric conductivity(EC) of the soil was increased that make soil salinity at some degrees. On soil microorganism aspect irrigating with reclaimed water could enhance bacteria and actinomycetes amounts while not enhance fungi amount, and the different between irrigation with second grade reclaimed water and the third reclaimed water was obviously and higher than that of fresh water irrigation control. On soil enzymes aspect. it was showed that urease activity was increased, and the alkaline phosphatase activity was biggest. The soil microbe number and enzyme activities were correlated with soil nutrient, so they could be used as the indexes to evaluate the fertility and environment quality of soil.