PDF《不同钝化剂及其组合对玉米 （Zea mays）生长和吸收》

摘要: 选取硅藻土、 生物炭、 沸石粉、 石灰及其组合开展田间试验, 研究它们对玉米 (Zea mays) 生长、 玉米籽粒吸收 Pb、 Cd、 As、 Zn 与土壤有效态 Pb、 Cd、 As、 Zn 的影响.

结果表明, 除石灰粉外, 施用其他

3 种钝化剂及其组合均能促进玉米生长, 增加玉米株高、 叶 面积和生物量, 显著提高玉米产量.4 种钝化剂及其组合可升高土壤的 pH 值和降低土壤中的有效态 Pb、 Cd、 As、 Zn 含量, 与CK 处 理相比, 施用不同改良剂导致土壤有效态 Pb 降低 6.82%~20.46%, 有效态 Cd 降低 12.76%~28.28%, 有效态 As 降低 26.89%~48.74%, 和有效态 Zn 降低 13.88%~28.95%, 其中 BZD (生物炭+沸石粉+硅藻土) 处理降低效果最明显, BLD (生物炭+石灰粉+硅藻土) 处理 次之;

4 种钝化剂及其组合都能降低玉米籽粒对 Pb、 Cd、 As、 Zn 的吸收, 其中 BZD 处理能明显降低玉米籽粒中 Pb、 Cd、 As、 Zn 含量, 较对照分别降低 47.71%、 95.00%、 90.90%、 31.41% .在原位钝化修复镉-砷-锌复合污染农田土壤时, BDZ 组合的施用效果最佳. 关键词: 钝化剂;

重金属;

有效性;

玉米 中图分类号: S513 文献标志码: A 文章编号: 1672-2043 (2016) 08-1515-08 doi:10.11654/jaes.2016-0579 不同钝化剂及其组合对玉米 (Zea mays) 生长和吸收 Pb Cd As Zn 影响研究 杜彩艳 1,

2 , 木霖3,王红华

3 , 严婷婷

3 , 程在全

4 , 曾民4,段宗颜 1* , 雷梅5*,罗红梅

4 (1.云南省农业科学院农业环境资源研究所,昆明 650205;

2.云南农业大学植物保护学院, 昆明 650201;

3.云南省农业环境保护 监测站, 昆明 650201;

4.云南省农业科学院生物技术与种质资源研究所,昆明 650223;

5.中国科学院地理科学与资源研究所, 北京 100101) Effects of different amendments on growth and Pb, Cd, As, Zn uptake by Zea mays DU Cai-yan1,2 , MU Lin3 , WANG Hong-hua3 , YAN Ting-ting3 , CHENG Zai-quan4 , ZENG Min4 , DUAN Zong-yan1* , LEI Mei5* , LUO Hong- mei4 (1.Institute of agricultural Environment &

Resources , Yunnan Academy of Agricultural Sciences, Kunming 650205, China;

2.Plant Protec原tion College, Yunnan Agricultural University, Kunming 650201, China;

3.Agricultural environmental protection monitoring station of Yunnan Province, Kunming 650201, China;

4.Biotechnology &

Genetic Resources Institute,Yunnan Academy of Agriculture Sciences,Kunming 650223,China;

5.Institute of Geographic Science and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China) Abstract: Field experiments were conducted to investigate the effects of diatomite, biochar, zeolite and lime and their additive proportion on maize growth and lead (Pb) , cadmium (Cd) , arsenic (As)and zinc (Zn)uptake by maize kernels and the available Pb, Cd, As and Zn in soil. The results showed that except lime,three amendments could improve maize growth and increase plant height, leaf area as well as biomass. The yield of maize was also significantly increased. All four amendments could increase soil pH values and reduce the concentra原tion of available Pb, Cd, As and Zn in soil. Compared to the control treatment, applying different amendments led to a decrease of available Pb content in soil by 6.82%~20.46%, available Cd by 12.76%~28.28%, available As by 26.89%~48.74%, and available Zn by 13.88%~ 28.95%. Additions of BZD (biochar+zeolite +diatomite)was the most available treatments to decrease the available content of heavy met原 收稿日期: 2016-04-25 基金项目: 中科院国际合作项目 (GJHZ201308) 作者简介: 杜彩艳 (1977―) , 女, 博士生, 副研究员, 主要从事植物营养和环境生态方面研究.E-mail: caiyandu@126.com * 通信作者: 雷梅E-mail: leim@igsnrr.ac.cn;