设施蔬菜地连作土壤,往往由于大量施用化肥、蒸发量大、受雨水淋滤少等原因,导致土壤退化,引发土传植物病害频发等连作障碍问题。厌氧还原土壤灭菌处理设施蔬菜地连作障碍土壤,降低土壤的氧化-还原电位,创造强还原环境,快速调节退化土壤理化性质和微生态结构,改良设施蔬菜地连作障碍土壤,提高设施蔬菜产量和品质,增加农民收入。对采集蚌埠市蔬菜基地设施蔬菜地连作障碍土壤,分设对照(不添加物料、不淹水)、处理1(少量稻草+淹水)、处理2(高量稻草+淹水)、处理3(少量稻草+少量猪粪+淹水)、处理4(高量稻草+高量猪粪+淹水)、处理5(高量稻草+饱和水)、处理6(高量稻草+高量猪粪+饱和水)共7组样品,每组样品分设3个平行样,实验室内30℃恒温箱密封培养15天,期间取样3次分析土壤理化性质及可培养微生物数量变化。结果表明,厌氧还原土壤灭菌处理可以降低土壤p H值和Ec值,去除SO42-和NO3-等水溶性盐分离子,调节土壤理化性质,尖孢镰刀菌由处理前104cfu g-1降低至103cfu g-1的致病临界浓度,起到抑制土传植物病原菌作用,防治设施农业连作障碍。不同有机物料的处理效果均较好,但处理间差异不显著,虽处理10天与处理15天相比,各处理样品的理化性质和微生物含量变化不显著,但与处理5天相比较,差异显著(P<0.05)。 Plantation vegetables as continuous soil, often due to the large amount of fertilizer, evaporation, rainfall leaching and other reasons, leading to soil degradation, causing soil-borne plant diseases such as continuous cropping obstacles. Anaerobic reduction soil sterilization facilities Vegetable continuous cropping obstacle soil, reducing the oxidation-reduction potential of the soil, creating a strong reduction environment, rapid adjustment of soil physical and chemical properties of degraded soil and micro-ecological structure, improved facilities Vegetable continuous cropping obstacles soil, improve vegetable yield And quality, increase peasant income. The treatment of 1 (small amount of straw + flooding), 2 (high amount of straw + flooding), 3 (small amount Straw + small amount of pig manure + flooding), treatment 4 (high amount of straw + high amount of pig manure + flooding), treatment 5 (high amount of straw + saturated water), treatment 6 Water), a total of seven samples were divided into three parallel samples. The samples were sealed and sealed in a laboratory at 30 ° C for 15 days. The soil samples were sampled three times to analyze the changes of soil physical and chemical properties and the number of cultivable microorganisms. The results showed that anaerobic reduction of soil could reduce p H value and Ec value of soil, remove water-soluble salt ions such as SO42- and NO3-, and adjust soil physical and chemical properties. Fusarium oxysporum reduced from 104 cfu g-1 103cfu g-1 critical pathogenic concentration, play a role in inhibiting the pathogen of soil-borne plants, prevention and control of facilities in agriculture continuous cropping obstacles. The treatment effect of different organic materials were good, but there was no significant difference between the treatments. Although there was no significant difference in the physicochemical properties and microbial content between the treatments for 10 days and 15 days, compared with the 5 days Significant (P <0.05).