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Key points of polyculture technology mainly for silver carp and bighead carp

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With filter-feeding fish such as silver carp and bighead carp as the main cultured fish, appropriately polyculture other fish, with special attention to polyculturing fish that feed on organic detritus. During the rearing process, the main method used is applying farmyard manure. 1. The stocking amount of silver carp and bighead carp accounts for 70% to 70% of the total, and their output accounts for 60% to 70%. Their large-sized fingerlings are obtained by the method of supplementary culture in adult fish ponds. Silver carp and bighead carp fingerlings begin to be caught in rotation from May, with 6 to 7 rotational catches per year. After each rotational catch, large-sized fingerlings are immediately stocked supplementarily, and the number of supplementary stocked fingerlings is generally roughly equal to the number caught. 2. Mainly apply farm

With filter-feeding fish such as silver carp and bighead carp as the main fish@#@233@#@, appropriately polyculture other fish, with special attention to polyculturing fish that feed on organic detritus. During the rearing process, the main method used is applying farmyard manure.

1. The stocking amount of silver carp and bighead carp accounts for 70% to 80%, and their output accounts for 60% to 70%. Their large-sized fingerlings are obtained by the method of supplementary culture in adult fish ponds. Silver carp and bighead carp fingerlings begin to be caught in rotation from May, with 6 to 7 rotational catches per year. After each rotational catch, large-sized fingerlings are immediately stocked supplementarily, and the number of supplementary stocked fingerlings is generally roughly equal to the number caught.

2. Applying farmyard manure is the main measure for rearing. Generally, the ponds are relatively large (10 to 30 mu), suitable for introducing large amounts of domestic sewage or farmyard manure.

3. To improve water quality and make full use of farmyard manure residue, attention is paid to polyculturing organic-detritus-feeding fish such as tilapia and silver xenocypris, which can make fuller use of the pond's feed resources than common carp and crucian carp.

4. Implement the integration of fish, livestock, poultry, and agriculture, carry out "integrated fish farming," and the "fish, pig, vegetable" three-in-one system, implement biological circulation, make full use of energy, and maintain ecological balance.

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