浙江农业科学 ›› 2026, Vol. 67 ›› Issue (4): 999-1005.DOI: 10.16178/j.issn.0528-9017.20240923

• 资源与环境 • 上一篇    下一篇

经济作物秸秆生物炭的特征及其对土壤镉有效态的影响

邹丽娜(), 柳婷婷, 骆霞虹, 陈常理, 李绍翠, 朱关林, 安霞()   

  1. 浙江省农业科学院 浙江省园林植物与花卉研究所,浙江 杭州 311251
  • 收稿日期:2024-12-05 出版日期:2026-04-11 发布日期:2026-04-17
  • 通讯作者: 安霞
  • 作者简介:安霞,E-mail:anxia@zaas.ac.cn
    邹丽娜,主要从事土壤污染控制与修复相关研究。E-mail:zoulina1991@yeah.net
  • 基金资助:
    萧山区重大科技计划项目(2022204)

Characteristics of cash crop straw biochars and their effects on soil cadmium availability

ZOU Lina(), LIU Tingting, LUO Xiahong, CHEN Changli, LI Shaocui, ZHU Guanlin, AN Xia()   

  1. Zhejiang Institute of Landscape Plants and Flowers,Zhejiang Academy of Agricultural Sciences,Hangzhou 311251,Zhejiang
  • Received:2024-12-05 Online:2026-04-11 Published:2026-04-17
  • Contact: AN Xia

摘要:

本文旨在探讨不同经济作物秸秆生物炭的特征及其对农田土壤镉有效态的影响,为经济作物秸秆的资源化利用及镉污染土壤的修复提供理论依据和数据支撑。针对向日葵、油菜、棉花、玉米、亚麻、黄麻、苎麻和红麻等的秸秆生物炭,采用元素分析仪、扫描电子显微镜、傅里叶变换红外光谱等方法对生物炭进行表征,通过长期土壤培养试验,研究不同经济作物秸秆生物炭对农田土壤镉有效态的影响及其对镉钝化作用的长效性。结果表明,不同经济作物秸秆烧制的生物炭的孔隙和表面粗糙度差异较大,其中黄麻、红麻和棉花秸秆生物炭具有较高的比表面积,且不同生物炭具有丰富的官能团结构,尤其是含氧官能团,包括羟基()、酯基(—)等。此外,经济作物秸秆生物炭的添加显著(p<0.05)降低了土壤有效态镉的含量,并且经济作物秸秆生物炭对镉的钝化具有较好的长效性和稳定性,其中,黄麻和苎麻秸秆生物炭的效果更佳。

关键词: 经济作物, 秸秆, 生物炭, 表征, 农田土壤,

Abstract:

The purpose of this study was to investigate the characteristics of biochar derived from different cash crop straws and their effects on the availability of cadmium in soils,so as to provide theoretical basis and data support for the resource utilization of cash crop straw and the remediation of cadmium polluted soil. Sunflower,rape,cotton,corn,flax,jute,ramie and kenaf straw biochar were characterized by elemental analyzer,scanning electron microscope and Fourier transform infrared spectroscopy. A long-term soil culture experiment was conducted to study the effects of different cash crop straw biochar on cadmium availability and the long-term passivation of biochar. The results showed that the pores and surface roughness of biochar from different cash crop straw were different,and the specific surface areas of jute,kenaf and cotton straw biochar were higher. Different biochar had rich functional groups,especially oxygen-containing functional groups including hydroxyl()and ester(). Besides,the addition of cash crop straw biochar significantly (p<0.05) reduced the content of available cadmium in soil. Moreover,cash crop straw biochar had good long-term effect and stability on the passivation of cadmium,among which jute and ramie straw biochar had better effect.

Key words: cash crop, straw, biochar, characterization, farmland soil, cadmium

中图分类号: