30 results about "Plagiognathops microlepis" patented technology

The invention discloses a special feed for a juvenile fish of plagiognathops microlepis. The special feed comprises the following components in parts by weight: 30-40 parts of hornwort, 30-40 parts of najas marina, 20-30 parts of soybean meal, 1-5 parts of camphorwood leaf, 4-6 parts of poplar leaf, 1-5 parts of chinaberry seed, 2-6 parts of masson pine needle, 1-3 parts of duckweed, 1-3 parts of salvinia natans, 15-20 parts of silkworm chrysalis meal, and 15-20 parts of pig blood power. The aquatic plants are used as main feed materials, the resources are rich, the secondary fermentation improves the contents of crude vegetable protein and crude fat to meet the nutrition demands; the soybean meal improves the tastiness while improving the nutritive components; camphorwood leaves, poplar leaves and the chinaberry seed can prevent and cure trichodiniasis; the masson pine needle can prevent and cure argulus; the duckweed and the salvinia natans can prevent and cure lernaea. The feed is high in stability in water, the survival rate is up to more than 95% and the growth rate of body mass are also up to more than 165.7 when the feed provided by the invention is used for feeding the fish, the feed coefficient is reduced, and the feed conversion rate is improved.

The invention discloses a plagiognathops microlepis fish and sturgeon intercropping method, which comprises the following steps of firstly performing disinfection treatment on a cement culture pond and waiting for releasing plagiognathops microlepis fish fry after disinfection; during the period after the plagiognathops microlepis fish fry is released before sturgeon fish fry is released, not feeding feedstuff to the plagiognathops microlepis fish fry, and partitioning the periphery of a food platform by using meshes about five days before the sturgeon fish fry is bred; releasing the sturgeon fish fry and breeding the sturgeon fish fry in a greenhouse; transferring the sturgeon fish fry bred in the greenhouse to deepwater net cages in a reservoir for marketable fish breeding; and finally scientifically breeding the sturgeon fish fry until marketable sturgeon comes into the market. According to the method, a single greenhouse perennial drainage breeding method is combined with a deepwater net cage breeding method in the reservoir, and a breeding mode of intercropping plagiognathops microlepis fish is adopted, so that the purpose that residual feeds, excrement of sturgeon and lichen generated in a pond are eliminated is achieved, so as to reduce the cost of marketable sturgeon breeding and the waste of environment and resources.

The invention discloses a method for cooperatively controlling microcystis aeruginosa and purifying water quality by using Plagiognathops microlepis, hyriopsis cumingii, Bellamya aeruginosa and calamus, and belongs to the technical field of water quality purification. The method comprises the following implementation steps: 1, selecting a specific eutrophication water area; 2, putting the hyriopsis cumingii into a net bag of a continuous ecological floating bed; and 3, throwing the Plagiognathops microlepis and the Bellamya aeruginosa into the water respectively. The method is simple and practical, can control the microcystis aeruginosa on upper, middle and lower layers of the water and microcystis aeruginosa hypopus in bottom mud and achieves an effect of purifying the water quality; various types of organisms are added, so the biological diversity of the water is improved and balance of a water ecological system is promoted; the hyriopsis cumingii, the Bellamya aeruginosa and the Plagiognathops microlepis are caught, so a certain economic value is achieved; and the calamus can be harvested at fixed period and can be used for feeding animals or serve as paper-making raw materials, so secondary pollution is avoided.

The invention discloses a comprehensive maintaining method for submerged plants. The comprehensive maintaining method comprises the following steps that firstly, a flocculating agent is added into a water body with the quantity of 1-20 mg / l to reduce the turbidity of the water body; secondly, according to the specific circumstance of dirt attached to the submerged plants, a disinfecting agent or organic acid or pesticide or algicide or surfactant or a substrate modifying agent or a microbial agent or microorganism growth promoting liquid is added into the water body with the amount of 0.1-1 mg / l, and flow disturbance is artificially made; thirdly, a nutrition regulator or a heavy metal complex is applied in the growing stage of the submerged plants with the quantity of 0.2-1 mg / l; fourthly, plagiognathops microlepis or barbels are introduced into the water body with the quantity of 50-100 pieces per 666.7 m<2> to eat fixation algae, and chub or bighead carp are introduced with the quantity of 10-30 g / m<3> to eat planktonic single-spore algae. By means of the comprehensive treatment method, the ecology of the water body is balanced, the transparency of the water body is quickly increased so as to promote the growth of aquatic plants in the water body, dirt attached to the stems and leaves of the aquatic plants is quickly removed, and finally the purpose of long-acting cleaning of the stems and leaves of the aquatic plants and the effect of enhancing water ecological restoration are achieved.