1. Bait formula: stir-fry a proper amount of white flour, corn flour and chaff with low fire, then add a proper amount of chopped leeks, add garlic juice, vinegar and white wine, stir well, put them in a sealed bottle and leave them for half a day.

2. Trapping management: wrap the prepared bait in cloth and put it in a shrimp cage, and then cage it at night. Pay attention to the shrimp cage opening with the water to prevent the shrimp from coming out with the water after entering the cage. Shrimp cages are suitable to be placed by the river or at the mouth of a small stream where the water flow is gentle.

Second, how to use the formula to catch river shrimp

1. Prepare 2g of phosphor, 2g of sleeping pills and 20g of dried earthworm, pound them into powder, add a small amount of rice soup, make them into paste, and then spread them in the center of the shrimp layer to dry.

2. Put the rotten pig blood in the place where there are shrimps, and then put two rotten eggs in the shrimp cage where the pig blood is lost.

3. Prepare one or two sheep oil, 1 rotten eggs and one or two honey, break the rotten eggs, add sheep oil and honey, stir well, wrap them in cloth and put them in a shrimp cage.

Third, the difference between river shrimp, fish and sea shrimp

1, different living environment.

(1) River shrimp: River shrimp mainly live in rivers, lakes, reservoirs and ponds, and cannot live in the sea.

(2) Sea shrimp: Sea shrimp mainly lives in the sea.

2. The main varieties are different

(1) River shrimps: River shrimps are mainly green shrimps with brown stripes, thin and soft shells and small heads. ?

(2) Sea shrimp: The main species of sea shrimp is white shrimp, belonging to the family Brachynchidae. Sea shrimps include prawns, prawns, Neopenaeus monodon and so on. Its head is big, its body is white and transparent with blue or red spots, and its shell is thin but hard.

3. Different pollution levels

(1) River shrimp: River shrimp live in lakes, ponds, rivers and other waters, and their waters are polluted to varying degrees. Rivers are mainly polluted by organic matter and heavy metals, and the mercury content of shrimp generally exceeds the standard.

(2) Sea shrimp: Sea shrimp lives in seawater, with higher salt content and iodine content than river shrimp, and is less affected by pollution.