Cassia polyphylla culture pond water quality improver and preparation method thereof

The invention provides a water quality improver for a Christia multiflora culture pond and a preparation method of the water quality improver. The water quality improver is prepared from the following raw materials in parts by weight: 18 to 22 parts of sodium humate, 19 to 25 parts of radix angelicae sinensis, 24 to 33 parts of pennisetum hydridum, 21 to 27 parts of herba geranii, 27 to 31 parts of lactobacillus rhamnosus, 15 to 20 parts of bacillus subtilis, 10 to 15 parts of schizochytrium limacinum powder, 3 to 5 parts of hexahydro beta-laurate, 12 to 15 parts of zinc selenomethionine, 17 to 22 parts of amino acid, 16 to 20 parts of sodium molybdate and 14 to 17 parts of iron hydroxymethionine. The water quality improver can effectively improve the water quality condition of a culture pond, inhibit propagation of harmful bacteria, increase the oxygen content in a water body and reduce accumulation of harmful substances in culture, and the water quality effect is stable. The feed can be used for preventing