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菌渣还田对设施土壤微生物量碳、氮的影响
赵自超1,2, 赵时峰3, 翟合生3, 张海兰1,2, 辛淑荣1,2, 姚利1,2
1.山东省农业科学院 农业资源与环境研究所, 山东 济南 250100;2.农业农村部废弃物基质化利用重点实验室, 山东 济南 250100;3.山东省莘县农业农村局, 山东 莘县 252423
摘要:
[目的] 探究设施土壤微生物量碳、氮对菌渣还田的响应,为实现设施瓜菜生产的可持续发展提供理论依据和技术支持。[方法] 以草菇菌渣为材料,在山东省莘县进行了田间试验,以常规鸡粪还田为对照(CON),设置5个菌渣(FR)还田量,研究菌渣还田对设施土壤有机碳(SOC)、全氮(TN)和微生量碳(MBC)、氮(MBN)的影响。[结果] 5个菌渣还田处理的菌渣使用量分别为15,30,45,60和75 t/hm2)相比CON增加了SOC和TN。SOC分别增加了12.0%,11.2%,21.6%,33.1%和31.7%,TN分别增加了3.1%,6.3%,19.9%,29.4%和26.4%。除FR1以外,其他4个菌渣还田处理相比增加了MBC和MBN,MBC分别增加了16.1%,19.9%,36.8%和50.7%,MBN分别增加了3.3%,37.7%,40.4%和60.9%。相比CON,高量菌渣还田处理增加了MBC/SOC和MBN/TN。相关分析表明,MBC,MBN与SOC和TN均呈极显著正相关。[结论] 菌渣还田可以提高土壤有机碳、土壤全氮和土壤微生物碳、氮。土壤微生物碳、氮含量随着菌渣还田量的增加而增加,因此菌渣还田是提高设施土壤微生物活性及土壤肥力的有效措施。
关键词:  菌渣  设施土壤  微生物量碳  微生物量氮
DOI:10.13961/j.cnki.stbctb.2020.04.022
分类号:S156
基金项目:山东省农业重大应用技术创新项目“农业废弃物高值化利用的智慧农业关键技术研究与示范”(SD2019ZZ020);山东省重点研发计划项目“利用农牧废弃物制备环保型栽培基质技术研究与示范”(2018GSF116013);山东省食用菌产业技术体系产后加工与菌渣利用岗位专家项目(SDAIT-07-09);山东农科院创新工程项目(CXGC2018E03)
Effects of Fungal Residue on Microbial Biomass Carbon and Nitrogen in Greenhouse Soil
Zhao Zichao1,2, Zhao Shifeng3, Zhai Hesheng3, Zhang Hailan1,2, Xin Shurong1,2, Yao Li1,2
1.Institute of Agricultural Resource and Environment, Shandong Academy of Agricultural Sciences, Ji'nan, Shandong 250100, China;2.Key Laboratory of Wastes Matrix Utilization, Ministry of Agriculture and Rural, Ji'nan, Shandong 250100, China;3.Authority of Agricultural and Rural of Shenxian of Shandong Province, Shenxian, Shandong 252423, China
Abstract:
[Objective] The response of microbial biomass carbon and nitrogen in greenhouse soil to the addition of fungal residue was studied in order to provide theoretical basis and technical support for the sustainable development of greenhouse production. [Methods] Field experiments were conducted in Shenxian County, Shandong Province, with six organic fertilizer treatments which application of chicken manure (CON) and five application rate of fungal residue (FR), to examine the effects of fungal residue on organic carbon (SOC), total nitrogen (TN), microbial biomass carbon (MBC) and nitrogen (MBN) in greenhouse soil. [Results] Compared with CON, the application of 5 fungal residue treatments (The usage of bacteria residues was 15, 30, 45, 60 and 75 t/hm2 respectively) increased SOC by 12.0%, 11.2%, 21.6%, 33.1% and 31.7%, respectively, and increased TN by 3.1%, 6.3%, 19.9%, 29.4% and 26.4%, respectively. The later four treatments increased the MBC (16.1%, 19.9%, 36.8% and 50.7%) and the MBN (3.3%, 37.7%, 40.4% and 60.9%), compared to the CON treatment. There were significant positive correlations between MBC, MBN and SOC, TN. [Conclusion] The application of fungal residue could increase the contents of SOC, TN, MBC and MBN, and the content of MBC and MBN increased with the increase of fungal residue to the field. As a result, the appropriate application of fungal residue could improve the soil microbial activity and soil fertility in greenhouse soil.
Key words:  fungal residue  greenhouse soil  microbial biomass carbon  microbial biomass nitrogen