| 王博1#, 马艺倩1#, 滕春红1*, 刘志华2, 李春杰3, 陶波1, 岳建超1, 冯曦茹1, 顾元琳1.异噁唑草酮对玉米根际土壤微生物量碳、氮和酶活性的影响[J].植物保护,2021,47(6):121-127. |
| 异噁唑草酮对玉米根际土壤微生物量碳、氮和酶活性的影响 |
| Effects of isoxaflutole on soil microbial biomass C, N and soil enzyme activities in maize rhizosphere |
| 投稿时间：2020-07-27 修订日期：2020-10-12 |
| DOI：10.16688/j.zwbh.2020398 |
| 中文关键词: 异噁唑草酮 玉米 根际土壤 微生物 酶活性 |
| 英文关键词:isoxaflutole maize rhizosphere soil microorganism enzyme activity |
| 基金项目:中国科学院战略性先导科技专项（XDA28070305）；国家重点研发计划(2017YFD0201803) |
| 作者 | 单位 | E-mail | | 王博1#, 马艺倩1#, 滕春红1*, 刘志华2, 李春杰3, 陶波1, 岳建超1, 冯曦茹1, 顾元琳1 | 1. 东北农业大学农学院, 哈尔滨150030
2. 东北农业大学资源与环境学院, 哈尔滨150030
3. 中国科学院东北地理与生态研究所, 哈尔滨150081 | E-mail:tchgrace@163.com |
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| 中文摘要: |
| 为明确异噁唑草酮对玉米根际土壤微生物碳、氮及酶活性的影响, 采用田间试验的方法, 以1倍、5倍和10倍田间推荐剂量为供试除草剂剂量, 测定了异噁唑草酮土壤封闭处理对玉米根际土壤微生物量碳、氮及土壤脲酶、过氧化氢酶、蔗糖酶、脱氢酶和中性磷酸酶活性的影响。结果表明:推荐剂量的异噁唑草酮对玉米根际土壤微生物量碳、氮含量无显著影响, 5倍和10倍推荐剂量的异噁唑草酮对玉米根际土壤微生物量碳、氮含量具有抑制作用。推荐剂量的异噁唑草酮对玉米根际土壤脲酶、过氧化氢酶和蔗糖酶影响较小, 5倍和10倍推荐剂量的异噁唑草酮对其具有明显的抑制作用。异噁唑草酮对土壤脱氢酶活性具有抑制作用, 且施用剂量越高, 抑制作用越强。异噁唑草酮对土壤中性磷酸酶活性的影响表现为前期促进, 后期抑制, 且施用剂量越大, 促进或抑制作用越强。研究表明:推荐剂量的异噁唑草酮对玉米根际土壤微生物量碳、氮及土壤脲酶、过氧化氢酶和蔗糖酶活性的影响较小, 但对土壤脱氢酶、中性磷酸酶活性有影响。 |
| 英文摘要: |
| To evaluate the effect of isoxaflutole on the soil microbial biomass C, N and enzyme activities in maize rhizosphere soil, a field experiment was conducted to investigate the effect of isoxaflutole at 1, 5 and 10 times of the field recommended dose on the soil microbial biomass C, N, soil urease, catalase, invertase, dehydrogenase and neutral phosphatase activity in maize rhizosphere soil. The results showed that there was no significant effect on the microbial biomass C, N in the rhizosphere soil of maize after application with the recommended field dose, and the microbial biomass C, N in the rhizosphere soil of maize was inhibited seven days after application with 5 and 10 times the recommended dose. The recommended dose of isoxaflutole had little effect on urease, catalase and sucrase in rhizosphere soil of maize, while 5 and 10 times the recommended dose of isoxaflutole had obvious inhibitory effect on them. Isoxaflutole inhibited the activity of soil dehydrogenase, and the higher the dosage, the stronger the inhibition. Soil neutral phosphatase activity showed early promotion and later inhibition after application of isoxaflutole, and the higher the dose, the stronger the stimulation or inhibition. The results showed that the recommended dose of isoxaflutole had little effect on microbial biomass C, N and soil urease, catalase and invertase activity in rhizosphere soil of maize, but it had effect on soil dehydrogenase and neutral phosphatase activity. |
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