[1]倪幸,黄其颖,叶正钱.竹炭施用对土壤镉形态转化和小麦镉积累的影响[J].江苏农业学报,2019,(04):818-824.[doi:doi:10.3969/j.issn.1000-4440.2019.04.010]
　NI Xing,HUANG Qi ying,YE Zheng qian.Effects of bamboo biochar application on cadmium morphological transformation in soil and cadmium accumulation in wheat[J].,2019,(04):818-824.[doi:doi:10.3969/j.issn.1000-4440.2019.04.010]
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竹炭施用对土壤镉形态转化和小麦镉积累的影响()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2019年04期
页码:
818-824
栏目:
耕作栽培·资源环境
出版日期:
2019-08-31

文章信息/Info

Title:
Effects of bamboo biochar application on cadmium morphological transformation in soil and cadmium accumulation in wheat
作者:
倪幸1; 2; 黄其颖1; 2; 叶正钱1; 2
(1.省部共建亚热带森林培育国家重点实验室，浙江农林大学，浙江临安311300；2.浙江省土壤污染生物修复重点实验室，浙江农林大学，浙江临安311300）
Author(s):
NI Xing1; 2; HUANG Qiying1; 2; YE Zhengqian1; 2
(1.State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an 311300, China;2.Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A&F University, Lin’an 311300, China)
关键词:
竹炭; 小麦; 镉
Keywords:
bamboo biochar; wheat; cadmium
分类号:
X56；S5121
DOI:
doi:10.3969/j.issn.1000-4440.2019.04.010
文献标志码:
A
摘要:
原位化学钝化技术是修复重金属污染土壤的重要方法，施用钝化剂可降低土壤重金属活性，减少其迁移及对作物的毒害。采用土壤室内培养和土壤盆栽试验的方法，研究在镉（Cd）污染土壤中施用竹炭（0、01%、10%和50%）对土壤镉活性及对籽粒Cd低积累型小麦Cd吸收与积累的影响。结果表明，施用适量竹炭提高了土壤pH值和有机质含量，降低了土壤有效态Cd含量，其中50%竹炭处理的效果最佳。培养120 d，与对照相比，50%竹炭处理的土壤pH提高了380%（P＜005），土壤有机质含量增加3835 g/kg，土壤有效态Cd含量降低了032 mg/kg。施用竹炭后，土壤酸可提取态Cd先向可还原态Cd转化，最终向可氧化态Cd和残渣态Cd转化。施用竹炭对小麦生物量和籽粒干质量无显著影响，施用适量竹炭可有效降低小麦植株的镉含量，其中50%竹炭处理的效果最佳，其处理的小麦根系、地上部和籽粒的镉含量较对照降低3406%（P＜005）、2157%、2333%。
Abstract:
Insitu chemical passivation technology was an important method for remediation of heavy metal contaminated soil. By applying passivating agent, the activity, migration and toxicity to crops of heavy metals in the soil were reduced. Using the method of indoor soil culture and pot experiment, the effects of bamboo biochar (0, 01%, 10% and 50%) on the cadmium (Cd) activity in soil and Cd uptake in low grainCd accumulation wheat were studied. The results showed that the proper application of bamboo biochar increased soil pH and organic matter content, decreased the effective Cd content in soil, and the treatment of 50% Cd application rate was best. After 120 days of incubation, compared with those in the control, the soil pH in the treatment of 50% bamboo biochar increased by 380% (P＜005), the soil organic matter content increased by 3835 g/kg, and the soil available Cd content decreased by 0.32 mg/kg. After the application of bamboo charcoal, acid extractable Cd was transformed to reducible Cd, and finally transformed to oxidizable Cd and residual Cd. The application of bamboo charcoal had no significant effect on wheat biomass and grain dry weight. Proper application of bamboo charcoal could effectively reduce the cadmium content in wheat. Compared with the control, the cadmium content of wheat roots, shoots and grains treated with 50% bamboo charcoal decreased by 34.06% (P＜005), 21.57% and 23.33%.

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备注/Memo

备注/Memo:
收稿日期：2018-10-29 基金项目：杭州市社会发展科研主动设计项目（20172015A01）；浙江省重点研发专项项目（2018C02004） 作者简介：倪幸(1993-)，女，硕士研究生，主要从事水土资源利用与环境修复研究。（E-mail）15957129667@163.com 通讯作者：叶正钱，（E-mail）yezhq@zafu.edu.cn
更新日期/Last Update: 2019-08-31