Acta Agrestia Sinica

Acta Agrestia Sinica ›› 2024, Vol. 32 ›› Issue (4): 1295-1302.DOI: 10.11733/j.issn.1007-0435.2024.04.035

Previous Articles    

Effects of Sludge Biochar Addition on Ryegrass and Soil Nutrient Properties

LI Wei1, WANG Jun2,3, XU Ru-min2,3, DU Shi-zhou1, QIAO Yu-qiang1, CHEN Huan1   

  1. 1. Crop Research Institute, Anhui Academy of Agricultural Sciences, Hefei, Anhui Province 230031, China;
    2. Anhui Municipal Sludge Disposal and Resource Utilization Engineering Technology Center, Hefei, Anhui Province 230022, China;
    3. Anhui Tongyuan Environmental Energy Saving Co., LTD, Hefei, Anhui Province 230022, China
  • Received:2023-11-26 Revised:2024-01-05 Published:2024-05-07

污泥生物炭添加对黑麦草和土壤养分特性的影响

李玮1, 汪军2,3, 徐汝民2,3, 杜世州1, 乔玉强1, 陈欢1   

  1. 1. 安徽省农业科学院作物研究所, 安徽 合肥 230031;
    2. 安徽省市政污泥处置与资源化利用工程研究中心, 安徽 合肥 230022;
    3. 安徽省通源环境节能股份有限公司, 安徽 合肥 230022
  • 通讯作者: 杜世州,E-mail:dsz315@sina.com
  • 作者简介:李玮(1980-)，女，汉族，甘肃定西人，博士，副研究员，主要从事作物栽培研究，E-mail:jtlw2007@163.com
  • 基金资助:
    安徽省重点研究与开发计划项目(2023t07020011)；国家重点研究计划(2023YFD1900204)；国家自然科学基金项目(32301447)；安徽省农业科学院青年英才计划项目(QNYC-202217,QNYC-201908)资助

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Abstract: In order to investigate the effects of sludge biochar (C)/modified sludge biochar (GC) addition on ryegrass (Lolium perenne L.) and soil nutrient properties,Lolium perenne Linn was planted with different levels of C/GC addition (0%,5%,10%,15%,and 20%) to determine the indicators of ryegrass and soil nutrients. The results showed that the addition of C and GC both promoted the growth of ryegrass and its stem,leaf and root water content,and the 5% addition level significantly increased the dry weight of ryegrass stem,leaf and root. C and GC additions had the most obvious effect on the increase of N content of ryegrass,followed by K content. C additions had a greater effect than GC on increasing the biomass of ryegrass,and for the content of nutrients and their uptake accumulation of ryegrass,GC was greater than C. C and GC both increased soil organic matter and total nitrogen content,decreased soil pH value,and the effects on soil alkaline nitrogen and available phosphorus varied by biochar type. Soil alkaline nitrogen content decreased significantly with the increase of C addition,while soil available phosphorus content was almost unaffected by the addition of C,however,soil available phosphorus content increased significantly with the increase of GC addition level. GC addition helped to increase the soil alkaline nitrogen content,but the difference was not significant among the application levels. The addition of 5% to 10% proportion of C or GC to the soil promoted plant growth and was beneficial to the increase of soil nutrient content.

Key words: Ryegrass, Sludge/modified sludge biochar, Biomass, Nutrient content, Soil nutrient

摘要： 为探讨污泥生物炭(Sludge biochar，C)和改性污泥生物炭(Modified sludge biochar，GC)添加对黑麦草(Lolium perenne L.)和土壤养分特性的影响，本试验以C和GC为材料，设置不同添加水平(0%，5%，10%，15%，20%)种植黑麦草，测定黑麦草和土壤养分等指标。结果表明，添加C、GC均促进了黑麦草的生长及其茎叶和根含水量的提高，5%的添加水平显著提高了黑麦草茎叶和根的干重。C、GC添加对黑麦草TN含量的提高效果最显著，其次为TK。C添加对提高黑麦草生物量的影响程度大于GC，而对黑麦草养分含量及其吸收累积，GC大于C。应用C、GC可提高土壤有机质和全氮含量，降低土壤pH，碱解氮和速效磷受生物炭类型影响。因此，土壤中添加5%～10%比例的C或GC对植物的生长有促进作用，有利于提高土壤的养分含量。

关键词: 黑麦草, 污泥/改性污泥生物炭, 生物量, 养分吸收, 土壤养分

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