Rice-fish farming has a long history in China and is one of the main methods for freshwater fish breeding in China. In recent years, as people's food on the table has become more and more abundant, river crabs have been more accepted by consumers. The application of throwing cultivation techniques and biological bacteria fertilizer "rice-bacteria-fish | crab" ecological farming model welcomed by the majority of farmers. It has a low investment, quick effect, no pollution, good efficiency, and has broad prospects for development.
Here's how to introduce the following methods for breeding:
1, the choice of rice fields. It is necessary to select paddy fields with good water source conditions, no pollution, convenient drainage and irrigation, and a deeper tillage layer. Shallow cultivated fields and spilled fields should not be used.
2, disinfection and fertilization. Winter and spring farming season, excavation of good fish | crab ditch, fish | crab pit. Old fish | crab ditch, fish | Crab pit to be renovated. Before restocking, 30 kg of lime was used for spreading and disinfecting per acre, and sufficient water was poured after one week. And apply 300 kilograms of decomposed manure and 1 kilogram of golden bacon fertilizer to cultivate the water quality. 4 to 5 days after the release of fish | crab species for feeding, "rice - bacteria - fish | crab" can be slowly formed the ecological chain.
3. Raise the height of the field ridge. Fish farming | The field ridges around crab rice fields must be excavated before ploughing. | Crab trenches, fish | Tian Hao should be tamped tightly to prevent the collapse of leaking fish | crab escape.
4, excavation fish | crab ditch, fish | crab pit. In the area of ​​fish farming | Crab rice field, 80 to 100 cm away from the field ridge, excavation of the ring field fish ditch, and excavation of the "10", "well", "mesh" shaped central groove, ditch according to the size and shape of the field block. The depth and width are 30 cm and 40 cm, respectively. The pits should be located in Tanabe and Taguya near the inlet, and they can also be located in the center of the field. The mu should have a depth of 100-120 cm and an area of ​​more than 5 square meters (depending on the fish | crab production requirements). Ditches and pits should be connected.
5, do a good fish bar. In order to prevent fishes and crabs from escaping, they must install barriers at the inlet and outlet before they are stocked.

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