生态环境学报 ›› 2026, Vol. 35 ›› Issue (4): 610-618.DOI: 10.16258/j.cnki.1674-5906.2026.04.011
朱茂红1,2(
), 李仁英1,2,*(
), 翟伊然1, 徐昊1, 杜鸿萱1, 王孙雨1
收稿日期:2025-09-01
修回日期:2026-01-16
接受日期:2026-02-05
出版日期:2026-04-18
发布日期:2026-04-14
通讯作者:
*E-mail: 作者简介:朱茂红(2002年生),女,硕士研究生,从事农田重金属污染防治研究。E-mail: 3318177928@qq.com
基金资助:
ZHU Maohong1,2(
), LI Renying1,2,*(
), ZHAI Yiran1, XU Hao1, DU Hongxuan1, WANG Sunyu1
Received:2025-09-01
Revised:2026-01-16
Accepted:2026-02-05
Online:2026-04-18
Published:2026-04-14
摘要:
为筛选出能同时缓解水稻分蘖期高温与砷双重胁迫的复合调节剂,分别选取3种常用高温缓解剂(磷酸二氢钾、蔗糖、茉莉酸甲酯)和砷阻控剂(水溶性硅肥、硫酸钾、有机硒肥),两两混合配成复合调节剂。通过盆栽试验,分别在37 ℃和5 μmol∙L−1砷双重胁迫前或胁迫后,对水稻叶片喷施复合调节剂,测定水稻叶片叶绿素相对含量(SPAD)、净光合速率、抗氧化酶活性、丙二醛含量与水稻砷、硅、硒含量等指标。结果表明,不同调节剂和喷施方式显著影响水稻生理及砷吸收,总体上,胁迫后喷施优于胁迫前。所有调节剂均可提高水稻叶片的SPAD值,而含磷酸二氢钾的处理SPAD值均处于较高水平。含蔗糖或有机硒肥的处理增强了超氧化物歧化酶(SOD)和过氧化物酶(POD)活性,其中磷酸二氢钾-有机硒肥处理的SOD和POD活性较大。含茉莉酸甲酯的处理则显著增强了过氧化氢酶(CAT)活性,降低了丙二醛(MDA)含量,其中茉莉酸甲酯-水溶性硅肥处理的MDA含量最低,分别与前后喷施对照相比显著下降54.8%和68.1%(p<0.05)。复合调节剂均减少水稻根和茎叶的砷含量,其中含有机硒肥和茉莉酸甲酯的处理依旧表现最佳。总体而言,水稻分蘖期若在高温-砷复合胁迫后喷施“磷酸二氢钾-有机硒肥”或“茉莉酸甲酯-有机硒肥”等复合调节剂,可有效保护水稻叶片光合系统、激活抗氧化防御系统、减少砷积累,为气候变暖背景下砷污染区水稻安全生产提供可行的技术路径。
中图分类号:
朱茂红, 李仁英, 翟伊然, 徐昊, 杜鸿萱, 王孙雨. 高温缓解剂和砷阻控剂配施对高温胁迫下分蘖期水稻生理及砷吸收的影响[J]. 生态环境学报, 2026, 35(4): 610-618.
ZHU Maohong, LI Renying, ZHAI Yiran, XU Hao, DU Hongxuan, WANG Sunyu. Effects of Combined Application of High Temperature Mitigators and Arsenic Inhibitors on the Physiology and Arsenic Uptake of Rice at Tillering Stage under High Temperature Stress[J]. Ecology and Environmental Sciences, 2026, 35(4): 610-618.
| 调节剂设置 | 试剂名称 | 溶液质量浓度 |
|---|---|---|
| 高温缓解剂1 | 磷酸二氢钾 | 22.04 mmol∙L−1 |
| 高温缓解剂2 | 蔗糖 | 2% |
| 高温缓解剂3 | 茉莉酸甲酯 | 0.015 mmol∙L−1 |
| 砷阻控剂1 | 水溶性硅肥 | 167 mg∙L−1 |
| 砷阻控剂2 | 硫酸钾 | 4.15 g∙L−1 |
| 砷阻控剂3 | 有机硒肥 | 1 mg∙L−1 |
表1 调节剂浓度
Table 1 Regulators concentration
| 调节剂设置 | 试剂名称 | 溶液质量浓度 |
|---|---|---|
| 高温缓解剂1 | 磷酸二氢钾 | 22.04 mmol∙L−1 |
| 高温缓解剂2 | 蔗糖 | 2% |
| 高温缓解剂3 | 茉莉酸甲酯 | 0.015 mmol∙L−1 |
| 砷阻控剂1 | 水溶性硅肥 | 167 mg∙L−1 |
| 砷阻控剂2 | 硫酸钾 | 4.15 g∙L−1 |
| 砷阻控剂3 | 有机硒肥 | 1 mg∙L−1 |
| 调节剂 | 水溶性硅肥 | 硫酸钾 | 有机硒肥 |
|---|---|---|---|
| 磷酸二氢钾 | T1 | T2 | T3 |
| 蔗糖 | T4 | T5 | T6 |
| 茉莉酸甲酯 | T7 | T8 | T9 |
表2 处理编号设置
Table 2 Treatment number setting
| 调节剂 | 水溶性硅肥 | 硫酸钾 | 有机硒肥 |
|---|---|---|---|
| 磷酸二氢钾 | T1 | T2 | T3 |
| 蔗糖 | T4 | T5 | T6 |
| 茉莉酸甲酯 | T7 | T8 | T9 |
图2 高温和砷胁迫下不同调节剂配施对水稻叶绿素相对含量和净光合速率的影响 不同小写字母表示同一施用方式不同调节剂差异显著,“*”表示同种调节剂不同施用方式差异显著;显著性水平为0.05。下同
Figure 2 Effect of different regulators on the SPAD value and net photosynthetic rate of rice under high temperature and arsenic stress
图3 高温和砷胁迫下不同调节剂配施对水稻酶活性和丙二醛的影响
Figure 3 Effect of different regulators on the enzyme activities and MDA content of rice under high temperature and arsenic stress
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