不同轮作模式下设施菜地土壤和蔬菜中 砷汞镉铬铅的分布特征

doi:10.7523/j.issn.2095-6134.2012.2.010

摘要/Abstract

摘要：

以沈阳市大民屯镇蔬菜生产示范基地为平台,进行为期一年的设施蔬菜轮作试验,结果表明:该地区土壤和蔬菜中的As、Hg、Cr、Pb含量均处在安全范围;Cd由于输入量较大,在土壤表层呈现富集状况,直接增加了该地区重金属污染风险. 菠菜-西红柿-芸豆轮作模式可在一定程度上减小土壤中Cd含量,降低土壤综合污染指数. 菠菜体内Cd含量超标,不宜在该地区种植. 建议将轮作模式改为油麦菜(或油菜)-西红柿-芸豆.

关键词: 轮作模式, 蔬菜, 重金属

Abstract:

Distributions of As, Hg, Cd, Cr, and Pb in soil and vegetable under different rotation modes were studied in an one-year experiment at the demonstration bases of vegetable in Damintun town, Shenyang city. The results showed that As, Hg, Cr, and Pb contents in soil and vegetable were lower than the criteria in the national safety standard. Spinach-tomato-kidney bean rotation mode could reduce the Cd-concentration in soil and decrease the integrative pollution index. However spinach is improper in that region because of enrichment of Cd. So a rotation mode of lettuce (or rape)-tomato-kidney is suggested, instead of the mode of spinach-tomato-kidney.

Key words: rotation mode, vegetable, heavy metal

中图分类号:

X131.3

黄宝同, 徐永刚, 宇万太, 周桦. 不同轮作模式下设施菜地土壤和蔬菜中砷汞镉铬铅的分布特征[J]. 中国科学院大学学报, 2012, (2): 212-219.

HUANG Bao-Tong, XU Yong-Gang, YU Wan-Tai, ZHOU Hua. Distribution characteristics of As,Hg,Cd,Cr,and Pb in soil and vegetable in protected vegetable field under different rotation modes[J]. , 2012, (2): 212-219.

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