不同增氧剂释氧对潜育化土壤还原性物质的消减效果  

Reduction Effect of Different Oxygen Producers on OxygenReleasing in Reducing Substances of Gleyed Soil

作　　者：潘珍 齐鹏[1] 徐祥玉[2] 童莉莎 赵书军[2] 彭成林[2] 佀国涵[2] 李佳莹 谢媛圆 PAN Zhen;QI Peng;XU Xiangyu;TONG Lisha;ZHAO Shujun;PENG Chengin;SI Guohan;LI Jiaying;XIE Yuanyuan(College of Resources and Environmental Sciences,Gansu Agricultural University,Lanzhou,Gansu 730070;Plant Protection and Soil Fertilizer Research Institute,Hubei Academy of Agricultural Sciences,Wuhan,Hubei 430070;Huazhong Agricultural University,Wuhan,Hubei 430070)

机构地区：[1]甘肃农业大学资源与环境学院,甘肃兰州730070 [2]湖北省农业科学院植保土肥研究所,湖北武汉430070 [3]华中农业大学,湖北武汉430070

出　　处：《热带农业工程》2024年第2期20-27,共8页Tropical Agricultural Engineering

基　　金：国家重点研发计划项目(No.2021YFD190120402)。

摘　　要：本研究以市售增氧剂为材料,潜育化稻田土壤为研究对象,采用水培试验和土壤培养试验相结合的方法,探讨不同增氧剂的释氧特征、包膜与不包膜增氧剂掺混配比,对不同潜育化程度稻田土壤还原性物质和氧化还原电位的影响。水培试验设置21个处理,测定水体溶解氧,土壤培养试验设两种不同潜育化程度土壤,5种不包膜:包膜掺混比例,共24个处理,测定土壤氧化还原电位和还原性物质,以期为潜育化稻田土壤改良提供理论依据。结果表明:市售增氧剂以过氧化钙2~3 mm和过氧化尿素3~5 mm处理效果最好,过氧化钙和过氧化尿素均能降低土壤还原性物质含量提高氧化还原电位。因此,过氧化钙和过氧化尿素对还原性物质的消减各有优势,其中不包膜:包膜比例以3:7效果最好。The effects of oxygen release characteristics of different oxygen producers and the mixing ratio of coated and uncoated aerators on soil reducing substances and Eh in different gleyed paddy fields provide theoretical basis for soil improvement in gleyed paddy fields.The experiment was conductedby combining the hydroponics test with the gelatinized paddy soil as the research object.Twenty-one treatments were set in the hydroponics test to measure dissolved oxygen in water.Two kinds of soil with different degrees of gelatinization were set in the soil culture test.Coating mixing ratio,a total of 24 treatments,determination of soil Eh potential and reducing substances.The best commercially available oxygen producers were treated with calcium peroxide 2-3 mm and urea peroxide 3-5 mm.Both calcium peroxide and urea peroxide could reduce the content of reducing substances in soil and increase the Eh potential.Both calcium peroxide and urea peroxide have advantages in reducing the reducingsubstances,among which the ratio of no coating:3:7 proving most effective.

关 键 词：增氧剂 释氧 还原性物质 潜育化稻田土壤 

分 类 号：S156[农业科学—土壤学] S145.3[农业科学—农业基础科学]