摘要
为比较四季大叶香菜、奶油生菜、四季速生小白菜和四季小香芹4种常见蔬菜对重金属复合污染弱碱性土壤中铅(Pb)、镉(Cd)、铬(Cr)、铜(Cu)、镍(Ni)和锌(Zn)的积累差异,从而筛选重金属低积累蔬菜品种,研究利用重金属盐模拟了高、中、低3种不同污染程度的重金属复合污染土壤进行盆栽试验。结果表明:高浓度Pb、Cd、Cr、Ni、Cu和Zn复合污染土壤对四季速生小白菜生物量有抑制效应,未采收到样本,但对其他3种蔬菜的生长抑制效应不明显;供试4种蔬菜中,四季小香芹对Pb、Cd、Cr、Cu和Zn这5种重金属的积累能力最强,四季速生小白菜对重金属Ni的积累能力最强;在高浓度污染土壤中4种蔬菜的地下部较地上部更易积累重金属;品种和重金属种类均可影响蔬菜对重金属的累积;研究还发现四季大叶香菜是一种高产且重金属低累积的品种。
In order to compare the differences in the accumulation of lead(Pb),cadmium(Cd),chromium(Cr),copper(Cu),nickel(Ni)and zinc(Zn)from the multi-contaminated,alkalescent soil in the plants of four-season grandfoliate coriander,creamy lettuce,four-season fast-growing pakchoi and four-season celery to choose low accumulation vegetables,a pot experiment was conducted by using heavy metal salts to simulate high-,moderate-and low-level heavy metals multi-contaminated soils.The results showed that the multi-contaminated soil by high levels of Pb,Cd,Cr,Cu and Zn produced inhibition on biomass of four-season fast-growing pakchoi,failing to collect samples,but had no obvious inhibition on the growth of the three other vegetables.Among the four kinds of vegetables examined,the accumulation ability of four-season celery to the five heavy metals of Pb,Cd,Cr,Cu and Zn was the strongest,while the accumulation ability of four-season fast-growing pakchoi to Ni was the strongest.In the high-level contaminated soil,the underground part of these four vegetables grown was more likely to accumulate heavy metals than their aboveground part.Both of vegetable varieties and heavy metal types can affect the accumulation of heavy metals in vegetables.Our research also found that four-season grandfoliate coriander was high yielding and low accumulation of heavy metals.
作者
熊文明
李拥军
莫桂民
周嘉诚
谢彩玲
XIONG Wen-ming;LI Yong-jun;MO Gui-min;ZHOU Jia-cheng;XIE Cai-ling(Guangdong Jiangmen Chinese Medical College,Jiangmen 529000,PRC;Qingyuan Polytechnic,Qingyuan 511510,PRC;Zhongshan Torch Polytechnic,Zhongshan 528436,PRC;Sanxiang Town Inspection and Testing Station of Agricultural Products,Zhongshan 528463,PRC)
出处
《湖南农业科学》
2022年第10期41-44,48,共5页
Hunan Agricultural Sciences
基金
中山市科技计划项目(2018B1116)
清远市科技计划项目(2020KJJH010)
清远市2019年省科技专项资金(“大专项+任务清单”)项目(2019DZX005)。
关键词
蔬菜
复合污染
土壤
盆栽试验
重金属积累
vegetables
combined pollution
soil
pot experiment
heavy metals accumulation
