近年来，我国的淡水渔业得到了迅速发展，许多大型水库也得到利用。但是有的水库因水底不平，乱石、树枝、沟壑等障碍物也较多，不适于用传统网具进行捕捞，而且大多数水库均为蓄水之用，一般不允许排水取鱼，所以，大型水库是很不容易清塘的，一旦水库中有了较大的凶猛鱼类 In recent years, the freshwater fishery in our country has been rapidly developed, and many large reservoirs have also been used. However, some reservoirs are not suitable for fishing with traditional mesh tools due to uneven bottom, stony rocks, branches and ravines. Most of the reservoirs are used for water storage. Generally, drainage is not allowed to take fish. Therefore, Large reservoir is not easy to clear the pond, once the reservoir has a larger ferocious fish