1College of Agronomy and Biotechnology,China Agricultural University,Beijing 100193,China|2College of Resources and Environmental Sciences,China Agricultural University,Beijing 100193,China
Abstract:This experiment was conducted to study the effects of self-root-grafting(as control),single-root-grafting and double-root-grafting on cucumber yield,rhizosphere microorganism population and enzyme activities in spring and autumn seasons.The results showed that both single-root-grafting and double-root-grafting could significantly increase cucumber yield,populations of soil bacteriam and actinomycetes,decrease the population of fungi and Fusarium oxysporum(cucumber pathogen).The single-root-grafting significantly decreased the population of Fusarium oxysporum and increased the population of actinomycetes than the double-root-grafting.The order of rhizosphere soil urease,neutral phosphatase,invertase and catalase activity of cucumber produced in autumn were double-root-grafting > single-root-grafting > self-root-grafting(control).