摘要
为了探讨光合细菌在土壤中最佳存活条件以及土壤中施入光合细菌对土壤微生物区系的影响,本研究采用正交试验设计的方法研究了不同水平的土壤温度、水分、土壤有机质含量对光合细菌数量及施入光合细菌后土壤环境条件对微生物区系的影响。结果表明:在土壤温度为7℃、淹水条件下、未施用有机质条件下,施入光合细菌菌液越多,光合细菌在土壤中存活量越多,到施入土壤第10天,光合细菌数量有增长趋势,之后下降;在温度、水分和有机质这三个影响因素中,土壤水分是影响光合细菌存活的主要因素;土壤中细菌、放线菌和真菌数量均随光合细菌施入及处理时间的延长而下降,以处理在第10天细菌、放线菌和真菌数量下降幅度最大,之后趋于稳定,其中土壤温度和光合细菌施入量对土壤中细菌和放线菌数量变化影响较大,对真菌数量变化影响小。
In order to study the best existed condition of Photosynthetic Bacteria （PSB） and effect of PSB being applied in soil on microbial flora, the effect of different level soil temperature, moisture and organic matter content on the number of PSB and its effects of soil environment of PSB being applied into soils on the number of soil microbe were studied using orthogonal experimental design. The result showed that the amount of PSB was more under the condition of soil temperature 7~C, inundation, no organic matter and initial PSB liquid applied in soil, the existed number of PSB was more, and the PSB number was increased on the tenth day, among the effects of temperature, moisture and organic matter, and soil moisture was the main factor to affect the existing of PSB; the amount of bacteria, fungi and actinomycetes were decreased with dealt time long, the decreased range was more larger on the tenth day, then the trend was stable, in every dealt factors, the soil temperature and PSB applied amount had a large effect on fungi. effect on bacteria and actinomycetes, which had smaller
出处
《中国农学通报》
CSCD
2013年第36期178-181,共4页
Chinese Agricultural Science Bulletin
基金
黑龙江省青年基金"光合细菌对水稻作用机理及对生态环境影响研究"(QC2009C112)
关键词
光合细菌
存活条件
土壤环境
微生物区系
photosynthetic bacteria
existed condition
soil environment
microbial flora
