2. What are the benefits of raising fish in rice fields? Fish can destroy and inhibit the growth of weeds in rice fields: for example, grass carp can eat weeds such as black algae, POTAMOGETON crispus, Sophora alopecuroides and duckweed in rice fields. Carp and crucian carp can eat grass seeds in the fields, so fish farming in rice fields can reduce weeds, reduce fertilizer consumption of weeds in rice fields, and save labor for weeding in rice fields.
3. Fish farming in rice fields can eliminate some pests: fish can eat pests in pots, such as borers, floating dust, rice weevils, rice planthoppers and golden flowers. Once these pests fall into the water, they may be eaten by rain, thus greatly reducing rice pests.
4. Fish farming in rice fields can loosen living water: when fish swim for food, topsoil and fertilizer will turn up with water, thus accelerating the decomposition of fertilizer and soil organic matter. At the same time, fish can play the role of loosening and intertillage when digging worms and grass roots in mud with their mouths.
5. Fish farming in paddy field can increase fertilizer: fish eat plankton, benthos and other organisms that consume a lot of fertilizer in the field, thus reducing the loss of fertilizer. At the same time, fish will excrete a lot of feces after eating and digesting, which is conducive to weight gain.