| 彭亚军1, 2, 柏振东1, 谢智彪1, 马国兰1, 2, 毛毕刚2, 王天抗2, 李巳夫1, 2, 罗丁峰1, 2, 刘都才1, 2, 李祖任1, 2*, 柏连阳1, 2.4种苗前封闭除草剂对镉低积累水稻的安全性评价[J].植物保护,2025,51(2):316-322. |
| 4种苗前封闭除草剂对镉低积累水稻的安全性评价 |
| Safety evaluation of four pre-emergence herbicides on cadmium-low accumulation rice |
| 投稿时间：2024-03-01 修订日期：2024-03-28 |
| DOI：10.16688/j.zwbh.2024107 |
| 中文关键词: 镉低积累水稻 除草剂 安全性 药害 叶绿素 |
| 英文关键词:cadmium-low accumulation rice herbicide safety phytotoxicity chlorophyll |
| 基金项目:湖南省重大科技攻关项目(2022NK1010); 湖南省农业科技创新项目(2021CX42, 2022CX11, 2022CX70) |
| 作者 | 单位 | E-mail | | 彭亚军1, 2, 柏振东1, 谢智彪1, 马国兰1, 2, 毛毕刚2, 王天抗2, 李巳夫1, 2, 罗丁峰1, 2, 刘都才1, 2, 李祖任1, 2*, 柏连阳1, 2 | 1. 杂草生物学及安全防控湖南省重点实验室, 湖南省农业科学院, 长沙 410125
2. 杂交水稻全国重点实验室, 湖南省农业科学院, 长沙 410125 | lizuren88214@hunaas.cn |
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| 中文摘要: |
| 为筛选镉低积累水稻田安全型封闭除草剂, 保障镉低积累水稻生产安全, 通过室内盆栽试验、田间小区试验评价了异噁草松、氟酮·呋喃酮、苄嘧·丙草胺、苄·丁·乙草胺等4种除草剂对镉低积累水稻的安全性, 并测定了光合作用光系统Ⅱ抑制剂异噁草松对镉低积累水稻叶绿素含量的影响。结果表明:异噁草松会使水稻叶片白化、植株轻微矮化, 氟酮·呋喃酮会使水稻植株明显矮化, 但后期均能恢复正常, 苄嘧·丙草胺处理后水稻无明显药害症状, 苄·丁·乙草胺会使水稻缺苗; 水稻品种‘44-5’的耐药性最差, 苄·丁·乙草胺对作物药害最重; 叶绿素含量变化幅度与水稻品种自身的叶绿素含量正相关。本文可为镉低积累水稻田杂草管理提供科学用药清单。 |
| 英文摘要: |
| To identify safe pre-emergence herbicides suitable for cadmium (Ca)-low accumulation rice fields and ensure production safety, this study evaluated the safety of four herbicides, clomazone, triafamone·tefuryltrione, bensulfuron-methyl·pretilachlor and bensulfuron-methyl·butachlor·acetochlor, through greenhouse bioactivity tests and field plot trials. The effect of clomazone, a photosystem II inhibitor, on the chlorophyll content of cadmium-low accumulation rice was also determined. The results showed that clomazone caused leaf bleaching and slight dwarfing of rice plants, while triafamone·tefuryltrione caused obvious dwarfing; however, both effects subsided over time. Bensulfuron-methyl·pretilachlor had no obvious phytotoxicity, whereas bensulfuron-methyl·butachlor·acetochlor reduced rice seedling emergence. The tolerance of the rice variety ‘44-5’ was the lowest, with bensulfuron-methyl·butachlor·acetochlor showing the highest phytotoxicity. Variations in chlorophyll content were positively correlated with the inherent chlorophyll content of rice varieties. These results provide a scientific basis for herbicide recommendations in cadmium-low accumulation rice paddies. |
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