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探讨了不同连作年限土壤对茄子根际土壤微生物数量、土壤酶活性的影响及其相关性和嫁接对重要相关因子的调节作用。结果表明:随着连作年限的增加,茄子根际土壤细菌数量和放线菌数量呈下降趋势,真菌数量呈增加趋势;根际土壤中的过氧化氢酶、过氧化物酶、多酚氧化酶、蛋白酶的活性呈降低趋势;土壤微生物数量和土壤酶活性之间有显著的相关性。其中过氧化氢酶、过氧化物酶、多酚氧化酶、蛋白酶是影响根际土壤中细菌和放线菌数量的主要因子,蛋白酶是影响根际土壤中真菌数量的主要因子。嫁接能提高土壤酶活性,缓解连作土壤带来的胁迫。
The effects of different successive cropping years soils on the rhizosphere soil microbial population and soil enzyme activities in eggplant and their correlations and the regulation of important related factors by grafting were discussed. The results showed that the number of bacteria and actinomycetes in rhizosphere soil of eggplant decreased with the increase of continuous cropping and the number of fungi increased. The activities of catalase, peroxidase, polyphenol oxidase , The activity of protease showed a decreasing trend. There was a significant correlation between soil microbial quantity and soil enzyme activity. Among them, catalase, peroxidase, polyphenol oxidase and protease were the main factors influencing the number of bacteria and actinomycetes in rhizosphere soil. Protease was the main factor affecting the number of fungi in rhizosphere soil. Grafting can increase soil enzyme activity, relieve the stress caused by continuous cropping.