农业资源与环境学报
農業資源與環境學報
농업자원여배경학보
Journal of Agricultural Resources and Environment
2015年
5期
477-484
,共8页
王熙娜%易自成%张瑶芬%王婧琦%张玉洁%黎华寿
王熙娜%易自成%張瑤芬%王婧琦%張玉潔%黎華壽
왕희나%역자성%장요분%왕청기%장옥길%려화수
皇竹草%重金属%污泥%鸡粪%植物修复
皇竹草%重金屬%汙泥%鷄糞%植物脩複
황죽초%중금속%오니%계분%식물수복
Pennisetum hydridum%heavy metal%sewage sludge%chicken manure%phytoremediation
采用土壤盆栽试验的方法,以重金属Zn、Cu、Pb和Cd污染的鸡粪和污泥为肥料,分别与赤红壤土按1:9的比例混合后作为栽培基质种植皇竹草,研究其对皇竹草生长发育的影响及皇竹草吸收重金属的能力.试验结果表明,通过种植皇竹草可实现对土壤中各重金属有效的提取,其中根部和茎秆是主要累积重金属的器官.各处理组的皇竹草生长状况良好,其中施肥处理对皇竹草生长具有显著的促进作用.秋季种植的皇竹草于200 d生长后,鸡粪处理、污泥处理和空白对照组的每蔸生物量分别达736.56±29.21、499.99±32.01 g和466.89±37.08 g.各处理组皇竹草对栽培基质中重金属Zn、Cu、Pb和Cd的提取率分别达到1.90%~4.52%、3.96%~5.72%、0.53%~1.24%和10.34%~17.14%.其中对重金属Zn、Cd和Pb吸收量在鸡粪处理组中达到最大值分别为89.74、0.68 mg和19.18 mg,而Cu吸收量在污泥处理组达到最大值为16.84 mg.可见,皇竹草能有效提取栽培基质中较高浓度的重金属,是修复重金属污染土壤的可行材料.
採用土壤盆栽試驗的方法,以重金屬Zn、Cu、Pb和Cd汙染的鷄糞和汙泥為肥料,分彆與赤紅壤土按1:9的比例混閤後作為栽培基質種植皇竹草,研究其對皇竹草生長髮育的影響及皇竹草吸收重金屬的能力.試驗結果錶明,通過種植皇竹草可實現對土壤中各重金屬有效的提取,其中根部和莖稈是主要纍積重金屬的器官.各處理組的皇竹草生長狀況良好,其中施肥處理對皇竹草生長具有顯著的促進作用.鞦季種植的皇竹草于200 d生長後,鷄糞處理、汙泥處理和空白對照組的每蔸生物量分彆達736.56±29.21、499.99±32.01 g和466.89±37.08 g.各處理組皇竹草對栽培基質中重金屬Zn、Cu、Pb和Cd的提取率分彆達到1.90%~4.52%、3.96%~5.72%、0.53%~1.24%和10.34%~17.14%.其中對重金屬Zn、Cd和Pb吸收量在鷄糞處理組中達到最大值分彆為89.74、0.68 mg和19.18 mg,而Cu吸收量在汙泥處理組達到最大值為16.84 mg.可見,皇竹草能有效提取栽培基質中較高濃度的重金屬,是脩複重金屬汙染土壤的可行材料.
채용토양분재시험적방법,이중금속Zn、Cu、Pb화Cd오염적계분화오니위비료,분별여적홍양토안1:9적비례혼합후작위재배기질충식황죽초,연구기대황죽초생장발육적영향급황죽초흡수중금속적능력.시험결과표명,통과충식황죽초가실현대토양중각중금속유효적제취,기중근부화경간시주요루적중금속적기관.각처리조적황죽초생장상황량호,기중시비처리대황죽초생장구유현저적촉진작용.추계충식적황죽초우200 d생장후,계분처리、오니처리화공백대조조적매두생물량분별체736.56±29.21、499.99±32.01 g화466.89±37.08 g.각처리조황죽초대재배기질중중금속Zn、Cu、Pb화Cd적제취솔분별체도1.90%~4.52%、3.96%~5.72%、0.53%~1.24%화10.34%~17.14%.기중대중금속Zn、Cd화Pb흡수량재계분처리조중체도최대치분별위89.74、0.68 mg화19.18 mg,이Cu흡수량재오니처리조체도최대치위16.84 mg.가견,황죽초능유효제취재배기질중교고농도적중금속,시수복중금속오염토양적가행재료.
Pennisetum hydridum is a rapid growth, large biomass and multi-stress resistant plant. A pot experiment was carried out to investi-gate the bioremediation effects of P. hydridum by 2 kg heavy metal(Cd, Cu, Pb, and Zn)contaminated chicken manure or sewage sludge mix-ing with 18 kg of lateritic red soil. The growth and heavy metal uptake of P. hydridum were measured in order to assess the phytoremediation potential. Results showed that P. hydridum growed well in all treatments and the best appeared in chicken manure. The biomass of plant in treatments with chicken manure, sewage sludge, and the control was 736.56 ±29.21, 499.99 ±32.01 g·pot-1, and 466.89 ±37.08 g·pot-1, re-spectively. The heavy metals in the soils were reduced significantly at the 200 d after planting P. hydridum in fall. The removing percentage of total Zn, Cu, Pb, and Cd in soil was 1.90%~4.52%, 3.96%~5.72%, 0.53%~1.24%and 10.34%~17.14%respectively. The best effect of re-moving Zn, Cd and Pb appeared in chicken manure treatment was 89.74, 0.68 mg and 19.18 mg. The best effect of removing Cu appeared in sludge treatment was 16.84 mg. The results indicated that P. hydridum could be used for removement of the heavy metals from the heavy met-al contaminated soils which could be considered as an potential plant for bioremediation of heavy metals.
