摘要
为探究添加死亡的放线菌细胞对土壤中微生物量碳、碱提取物及组分形成的影响,本试验选取灰色链霉菌和黑钙土为供试材料,设置添加死亡菌体组和对照组(ck)2个处理,相同条件下进行培养。研究结果表明:培养期间,添加组微生物量碳、"碱提取物质-C"(类似于胡敏酸和富里酸总和)及"碱溶酸溶组分-C(类似于富里酸)"含量一直明显高于对照。培养后期(50 d),添加组和ck中的微生物量碳相对含量分别为0.98%、0.71%;添加组"碱提取物质-C"、"碱溶酸不溶组分-C"(类似于胡敏酸)以及"碱溶酸溶组分-C"的相对含量分别为32.89%、4.10%、28.79%;而对照组分别为26.38%、7.39%、18.99%。同时,"碱溶酸不溶组分"2组无显著差异。说明死亡放线菌细胞能促进微生物量碳、碱提取物质以及"碱溶酸溶组分"的形成但对"碱溶酸不溶组分"影响不明显。
To investigate the effects of dead actinomycetes cells on microbial biomass carbon （MBC）, alkaline extraction and its compositions in soil, Streptomyces griseus F1 and chernozem were selected as tested materials, and two treatments, dead thallus group and control group （ck） , were offered. The results showed the content of microbial biomass carbon, ＂alkaline extraction ＂（ the equivalent of humic and fulvic acid sum）, and ＂alkali-so]uble acid-soluble groups （ the equivalent of fulvic acid） ＂ was always higher than ck during the incubation. At the end of incubation （50 d）, relative content of microbial biomass carbon of the addition treatment and ck was O. 98% and 0.71%, respectively ; relative content of C of ＂alkaline extraction＂ and ＂alkali-soluble acid-insoluble groups＂ （ the equivalent of humic acid） and ＂alkali-soluble acid-soluble groups＂ of the addition treatment was 32. 89%, 4. 10% and 28.79%, respectively; but that of ck was 26. 38%, 7. 39% and 18.99%, respectively. Meanwhile, ＂alkali-soluble acid-insoluble groups＂ of both treatments did not have obvious difference. The results suggest that dead actinomycetes cells can promote the formation of microbial biomass carbon, alkaline extraction and ＂alkali-soluble acid-soluble groups＂, but effect on ＂alkali-soluble acid-insoluble groups ＂ was little.
出处
《吉林农业大学学报》
CAS
CSCD
北大核心
2016年第4期446-451,共6页
Journal of Jilin Agricultural University
基金
国家基础研究计划项目(2009CB426308)
吉林省科技厅项目(20130206018NY)
土壤与农业可持续发展国家重点实验室开放课题项目(Y412201454)
关键词
死亡放线菌细胞
微生物量碳
碱提取物质
dead actinomycetes cell
microbial biomass carbon
alkaline extraction
