天然河道里，经常有人捕鱼、电鱼，却无人放养鱼苗，鱼密度不大。弄不好会乘兴而去，空手而回。 在天然河道垂钓，要找有水流的涵管口和沟渠口下钩，就是人们常说的静中找活。在静水里流进活水，水中溶氧增多，而流进来的活水中又带有不少小虫等鱼儿爱吃的食物，因而鱼儿都爱聚 Natural rivers, often someone fishing, electric fish, but nobody puts fish fry, fish density is not big. Not good will ride away, empty-handed and back. Fishing in the natural river, to find a stream of culverts and ditches under the hook, that is, people often find peace of mind. In the still water flows into the living water, dissolved oxygen in the water increases, and the flowing water comes in with many insects and other fish eat food, so the fish love poly