关键词: 雷竹林, 生物量, 土壤肥力, 覆盖经营

Abstract: A field experiment was conducted to investigate soil earthworm density and soil basic fertility changes and their relationship under different water (irrigation) and fertilizer (manure fertilization) managements in greenhouse organic vegetable system to provide scientific basis for reasonable irrigation and fertilization on greenhouse organic vegetable. Soil moisture, porosity, the contents of soil organic carbon, total nitrogen, available phosphorus and available potassium were significantly increased by 4%-27%, 6%-9%, 19%-27%, 19%-26%, 141%-230% and 74%-91% respectively with the increasing organic manure fertilization. Under the same irrigation, earthworm density was significantly increased by 43%-110% in the manure treatments compared with no manure treatment. There were extremely significant positive correlations between earthworm density and soil productivity, soil porosity, the contents of soil organic carbon, total nitrogen and available phosphorus. Our data indicate that soil earthworm can be a bioindicator to assess soil fertility in greenhouse vegetable fields, and can play important ecological functions. Considering soil fertility and productivity, decrementirrigation plus conventionalmanure application is the best management for sustainable organic vegetable production.

Key words: mulching management, Phyllostachys praecoxforest, biomass, soil fertility.