The utility model belongs to the technical field of seaweed collection, and particularly relates to a device for collecting seaweed debris in situ. The device comprises a seaweed debris collecting device and a water collecting tank connected with the seaweed debris collecting device through a transmission pipe; The seaweed debris collecting device comprises a hanging rod, a cylindrical device, fixing columns and a fixing ring, wherein the hanging rod is arranged at the upper end of the cylindrical device and used for hanging seaweed, and the two ends of the hanging rod are fixed through the two fixing columns; The outer wall of the cylindrical device is sleeved with a plurality of fixing rings, and each fixing ring is fixedly connected with the two fixing columns respectively. The seaweed debris collecting device provided by the utility model realizes seaweed debris collection on the premise of not affecting the growth of seaweed, so that the estimation of the primary productivity of the seaweed is more accurate.
; 钟志海; 刘正一
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