CAJ | 학술논문

采用温室盆栽土培方法.研究了土壤中不同浓度重金属铅(Pb,0-800 mg·kg~(-1))、镉(Cd,0-50 mg·kg~(-1))单一及其复合处理对玉米(Zea mays L.)生长及土壤微生物(细菌、放线菌、真菌)数量的影响.结果表明,在重金属Pb、Cd单一及其复合处理下,玉米的株高、干重均低于对照,重金属Pb、Cd处理对玉米的生长存在负面影响.重金属Pb、Cd单一处理抑制细菌、真菌的生长,中低浓度Pb(<300mg·kg~(-1))、Cd(≤10mg·kg~(-1))单一处理促进放线菌数量的增加,高浓度(Pb≥800mg·kg~(-1)、Cd≥50mg·kg~(-1))则呈现抑制效应;Pb、Cd复合在高中低浓度下都抑制土壤微生物生长,减少微生物数量.玉米株高同土壤微生物之间相关性不显著;玉米干重同土壤细菌、真菌显著相关,同土壤放线菌之间相关性不显著.
채용온실분재토배방법.연구료토양중불동농도중금속연(Pb,0-800 mg·kg~(-1))、력(Cd,0-50 mg·kg~(-1))단일급기복합처리대옥미(Zea mays L.)생장급토양미생물(세균、방선균、진균)수량적영향.결과표명,재중금속Pb、Cd단일급기복합처리하,옥미적주고、간중균저우대조,중금속Pb、Cd처리대옥미적생장존재부면영향.중금속Pb、Cd단일처리억제세균、진균적생장,중저농도Pb(<300mg·kg~(-1))、Cd(≤10mg·kg~(-1))단일처리촉진방선균수량적증가,고농도(Pb≥800mg·kg~(-1)、Cd≥50mg·kg~(-1))칙정현억제효응;Pb、Cd복합재고중저농도하도억제토양미생물생장,감소미생물수량.옥미주고동토양미생물지간상관성불현저;옥미간중동토양세균、진균현저상관,동토양방선균지간상관성불현저.
Pot experiment was conducted to study the effects of different concentrations of lead (Pb, 0-800 mg·kg~(-1)), cadmium (Cd,0～50 mg·kg~(-1)) single and their compound treatments on growth of maize (Zea mays L.) and soil microbe quantity including bacteria, actino-mycetes, fungi. The results showed that the heavy metals Pb and Cd treatment have the negative influence on maize growth, plant height and drymass of maize were significantly lower than that of the control under Pb、Cd single and compound treatments. The Pb、Cd single treatment inhibited the growth of bacteria and fungi; Actinomycetes was increasing under middle and low concentration of Pb (blow 300 mg·kg~(-1))、Cd (blow 10 mg·kg~(-1)), while the high-concentration (Pb above 800 mg·kg~(-1)、Cd above 50 mg·kg~(-1)) presented the inhibitory effect; Growth of Soil microorganism was inhibited under the high 、 middle and low concentration of Pb and Cd compound treatments, and caused the microbe quantity decreased. The relationship between maize plant height and the soil microorganism wasn't related significantly; There was significant correlation among maize drymass and soil bacteria 、fungi, but not and the soil actinomycetes.