Effect of clean and sod cultivation on soil enzyme activity in sandy vineyard

【Objective】The objective of this study was to investigate the effect of clean cultivation, intercropping vetch(Vicia villosa Roth) and alfalfa(Medicago sativa L.) on the soil urease,alkaline phosphatase, invertase, cellulase and catalase activities at different depth of soil in sandy vine yard. 【Method】 The treatment included clean cultivation(CK), intercropping vetch and intercropping alfalfa in rows, and the enzyme activities in different soil layers(0 to 20 cm,21 to 40 cm,41 to 60 cm) were analyzed. 【Result】 The soil urease,alkaline phosphatase, invertase and catalase activities decreased with the soil depth increase, but the soil cellulase activity in 21 to 40 cm soil layer was higher than those in 0 to 20 cm and 41 to 60 cm. In the same soil layer, soil urease, alkaline phosphatase, invertase, cellulase activities of sob treatments were significant higher than those of clean cultivation, but soil catalase activities of sob cultivation were significant lower than those of CK. There were some difference in activities of those enzymee between the in-row soil and the inter-row soil, and the difference depended on enzymes.【Conclusion】Sod cover increased enzyme activities except catalase compared with clean cultivation. It was also suggested that sob cover could restrain the soil catalase activity, but more information was needed to confirm that.