不同绿肥还田对设施葡萄园土壤养分、酶活性和微生物生物量的影响OA

To clarify the effect of green manure incorporation on soil improvement in a protected vineyard,four leguminous green ma-nures,namely common vetch(JKWD),Chinese milk vetch(ZYY),crimson clover(JSY),and smooth vetch(GYSZ),were used as research objects,and the changes in soil nutrients,enzyme activities,and microbial biomass carbon and nitrogen contents after their incorporation were analyzed.The results showed that green manure incorporation significantly improved soil fertility,with soil organic matter contents significantly increased compared with the control treatment,and simultaneously effectively enhanced the availability of soil nitrogen,phosphorus,and potassium nutrients.In terms of enzyme activities,JSY performed the best,with the highest activities of urease,catalase,acid phosphatase,β-glucosidase,and β-cellobiosidase.Green manures provided sufficient carbon and nitrogen sources for microorganisms through nitrogen increase by nitrogen-fixing rhizobia and carbon supplement by organic matter decomposi-tion.Green manure incorporation could effectively improve the soil quality and ecological functions of the protected vineyard,provid-ing a good soil foundation for grape growth.