浙江农业学报 ›› 2025, Vol. 37 ›› Issue (3): 521-529.DOI: 10.3969/j.issn.1004-1524.20240168
宋欣录1(), 范书红2, 武桄旗1, 展梦琪1, 侯倩1, 李明月1, 徐艳1,*(
)
收稿日期:
2024-02-29
出版日期:
2025-03-25
发布日期:
2025-04-02
作者简介:
宋欣录(1999—),男,山东泰安人,硕士研究生,研究方向为土壤微生物学。E-mail:song1xinlu@163.com
通讯作者:
* 徐艳,E-mail:yanxu@qdu.edu.cn
基金资助:
SONG Xinlu1(), FAN Shuhong2, WU Guangqi1, ZHAN Mengqi1, HOU Qian1, LI Mingyue1, XU Yan1,*(
)
Received:
2024-02-29
Online:
2025-03-25
Published:
2025-04-02
摘要:
土壤污染中经常存在重金属与多环芳烃复合污染的情况,污染物通过根系进入植物体内,严重危害作物生产安全。为探究复合污染对作物的影响,采用盆栽试验,研究菲、铜和铜-菲复合污染下分蘖期水稻生理生化特性和根系中铜与菲的积累特征。结果表明,复合污染下水稻的电解质渗透率较菲污染处理高出16.08百分点;污染处理的水稻根系过氧化物酶和过氧化氢酶活性均显著(P<0.05)降低,但复合污染与单一污染处理之间无显著差异。复合污染下水稻根内与根际的菲含量分别为0.59 mg·kg-1和6.51 mg·kg-1,显著(P<0.05)高于菲污染处理(0.01 mg·kg-1和3.63 mg·kg-1);水稻根系的铜含量为48.28~74.18 mg·kg-1,复合污染与单一污染处理的铜含量无显著差异。综上,铜-菲复合污染并未加强对水稻抗氧化酶活性的抑制,但显著增加了水稻根系与根际土壤中的菲含量,加重菲污染。
中图分类号:
宋欣录, 范书红, 武桄旗, 展梦琪, 侯倩, 李明月, 徐艳. 铜-菲复合污染对分蘖期水稻根系生理特性和污染物积累的影响[J]. 浙江农业学报, 2025, 37(3): 521-529.
SONG Xinlu, FAN Shuhong, WU Guangqi, ZHAN Mengqi, HOU Qian, LI Mingyue, XU Yan. Effects of combined copper-phenanthrene pollution on physiological characteristics and pollutant accumulation of rice roots at tillering stage[J]. Acta Agriculturae Zhejiangensis, 2025, 37(3): 521-529.
图3 水稻根靶区域显微镜扫描图和LA-ICP-MS铜元素分布扫描图 A,水稻根的纵切面靶区域显微镜扫描图;B,水稻根的横切面靶区域显微镜扫描图;C,水稻根的纵切面LA-ICP-MS铜元素分布色块;D,水稻根的横切面LA-ICP-MS铜元素分布色块。
Fig.3 Microscope scanning of target area and copper distribution scanning by LA-ICP-MS for rice roots A, Microscope scanning of target area in longitudinal section of rice root; B, Microscope scanning of target area in transverse section of rice root; C, LA-ICP-MS copper distribution colormapof longitudinal section of rice root; D, LA-ICP-MS copper distribution colormap of transverse section of rice root.
图4 光学照相机下水稻根尖样品形貌和根中元素含量分布色块图 分辨率:2 568 pixel×1 230 pixel;采样步长:18 μm;单点驻留时间:10 ms。
Fig.4 The image of rice root tips under optical camera and the content distribution colormap of elements in rice roots Image resolution: 2 568 pixel×1 230 pixel; Size: 18 μm; Time:10 ms.
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