CATDOLL : CATDOLL: How to farm crayfish in rice fields

How to farm crayfish in rice fields

Choose sticky fields with abundant water sources and fertile soil for breeding. First, dig ditches in the rice fields, then disinfect with quicklime, and apply basal fertilizer in the rice fields to supplement fertility. Finally, put the crayfish in the rice fields for breeding. Transplant water plants such as Vallisneria, Hydrilla verticillata, and Duckweed in the shrimp ditches and fields. The coverage of water plants should be 30%, and it is better to be sporadic and dispersed, which is conducive to the smooth flow of water in the shrimp ditches. Use plastic film, cement board, asbestos tile or calcium plastic board to build escape-proof walls around the field to prevent crayfish from escaping.

Crayfish are farmed all over the world and have formed a large number of wild populations. China introduced them from Japan in the 1930s and 1940s, and Japan introduced them from the United States earlier, mainly for food and pets. Crayfish are often mixed with crops (such as rice) in fields. They do not require artificial hatching. Once the stock is stocked in the pond, it can be self-sustaining. After harvesting, there is no need to stock the stock again.

Crayfish are omnivores. In terms of eating habits, they prefer to eat mud at the bottom of the river, and like to eat dead small fish or other aquatic organisms. They mainly eat plants, small fish, shrimps, plankton, benthic organisms, and algae. Crayfish have a wide adaptability. They can grow and develop normally when the water temperature is 10-30℃, can withstand high temperatures above 40℃, and can safely overwinter when the temperature is below -14℃.

Because crayfish are highly adaptable, resistant to adversity, have a wide range of diets, and have a fast population growth rate, they often cut off crops, especially rice crops, and may compete with local freshwater crayfish species. Since most crayfish are very resistant to pollution, they can still survive in water containing high levels of pollutants. When they are released into aquariums, they can also effectively remove fish excrement and moss, making a great contribution to the improvement of the hydrological environment.

How efficient are freshwater lobsters in rice fields?

Lobsters will dig holes, so it is not practical to put them in rice fields unless your rice fields have been specially treated!