生物复混肥对土壤微生物的影响研究

在温室盆栽玉米条件下，应用平板计数法、氯仿熏蒸浸提法和Biolog微平板法，进行施用菌剂、生物复混肥、有机无机复混肥和无机肥对土壤微生物的影响试验。结果表明，施用生物复混肥可显著提高土壤中细菌、真菌和放线菌数量，增加土壤微生物量碳、氮的含量；增强土壤微生物利用单一碳源的能力、提高土壤微生物群落的功能多样性；促进土壤微生物生态系统的稳定，改善土壤微生物群落的生态功能。

Effects of bio-compound fertilizer on soil microorganism

The effects of bio-compound fertilizer on soil microorganism were assessed using plate count method,CHCl_3 fumigation-extraction method and Biolog micro-plate technique on potted corn plants in greenhouses.Results showed that bio-compound fertilizer treatment increased the number of bacteria,fungi and actinomycetes in soil.The fertilizer treat- ment also increased the amount of C and N in soil microbial biomass,and the capacity to utilize single carbon substrate, it also increased biediversity and evenness of soil microbial community.Therefore,the bio-compound fertilizer treatment was beneficial to the diversity and function of soil microbial community.It also promoted the stability of soil ecological system and improved ecological functions of soil microbial community.