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冬季是我国北方地区捕鱼的重要季节,冰下大拉网是冬季捕鱼的重要的大型网具。这种网具的特点为:每网次围捕的面积很大,一般者达60公顷左右;上、
Winter is an important season for fishing in the northern part of our country. Under the ice, the big net is an important large-scale fishing net for winter fishing. The characteristics of this type of mesh are as follows: the area of each round of arrest is very large, usually about 60 hectares;