摘要：Biomass variation, secondary production and turn-over of the earthworm Drawida willsi (Michaelsen) wasassessed from a tropical agroecosystem site at Ranchi for 18 months. The total biomass ranged between0.88 ± 0.33 and 29.55 ± 3.15 g dry weight m -2 . Secondary production of 53.37 g dry weight m -2 yr -1 wasobtained which in terms of calorific value amounts to 246.57 kcal m -2 yr -1 . Biomass turnover value was 4.99.
