Background: On the one hand, the current global consumption concept is undergoing tremendous changes. The trend of paying attention to health care and advocating natural green consumption has risen in spite of the fact that green food is expensive (for example, in China, for every 1 kilogram of Chinese sturgeon, the value of the cultured fish is 90 yuan. Wild At 350 yuan, 40% of Europeans, 67% of Dutch, and 80% of Germans prefer to buy green food. With the acceleration of the process of building a well-to-do society in an all-round way, more and more people will advocate green food in China. On the other hand, China's freshwater waters are vast, and many of them are suitable for imitating wild-cultivated Kuwan and Hegou, but they are rarely used to produce green food.
Mode: Blocks are placed in the bays and ditches to make the water body in a natural state of flow. According to local conditions such as sunlight, precipitation, fertilizer sources, and soil quality, plants can be selectively cultivated in submerged plants. , black leaf algae, bitter grass, etc.) are mainly supplemented with emergent plants (Sagitta arborescens, Artemisia halodendron, etc.) and floating plants (water hyacinth, duckweed, euphorbia, blue pinnacle, etc.), and herbivorous grass carp and group head lice are stocked. , filter-feeding quail, quail, carnivorous Chinese sturgeon, etc., the bottom and then broadcast some snails, clams and other shellfish. In this wild-like environment, aquatic plants grow by absorbing nutrients in water bodies and supplement them with oxygen. Herbivorous fishes feed on grass and their excrement breeds plankton; filter-feeding fish feed on plankton and increase their productivity. The transparency of the water body allows the water grass to obtain sufficient light; the carnivorous Chinese sturgeon feeds on benthic shellfish, small fish and shrimp. With this breeding mode, since the ecology is in a virtuous circle, the cultivated species rarely get sick and no pesticides are needed. The products are similar to the wild and meet the requirements of green foods. In addition, they are mainly based on natural foods and supplemented with artificial diets. Breeding also saves production costs.
Example: In 2002, a multi-operating company in Nantong, Jiangsu Province used 200 hectares of water for polyculture of fish and Chinese mitten crabs. They planted Elodea, black-leaf algae, and bittergrass in the water to create a natural environment. In the environment, no banned drugs such as chloramphenicol and furazolid were used during the breeding process. In addition to fish, 697 kg of Chinese mitten crabs were harvested per hectare of water. All fish and crab products met the requirements of green food, and the market price was lower. high.
Mode: Blocks are placed in the bays and ditches to make the water body in a natural state of flow. According to local conditions such as sunlight, precipitation, fertilizer sources, and soil quality, plants can be selectively cultivated in submerged plants. , black leaf algae, bitter grass, etc.) are mainly supplemented with emergent plants (Sagitta arborescens, Artemisia halodendron, etc.) and floating plants (water hyacinth, duckweed, euphorbia, blue pinnacle, etc.), and herbivorous grass carp and group head lice are stocked. , filter-feeding quail, quail, carnivorous Chinese sturgeon, etc., the bottom and then broadcast some snails, clams and other shellfish. In this wild-like environment, aquatic plants grow by absorbing nutrients in water bodies and supplement them with oxygen. Herbivorous fishes feed on grass and their excrement breeds plankton; filter-feeding fish feed on plankton and increase their productivity. The transparency of the water body allows the water grass to obtain sufficient light; the carnivorous Chinese sturgeon feeds on benthic shellfish, small fish and shrimp. With this breeding mode, since the ecology is in a virtuous circle, the cultivated species rarely get sick and no pesticides are needed. The products are similar to the wild and meet the requirements of green foods. In addition, they are mainly based on natural foods and supplemented with artificial diets. Breeding also saves production costs.
Example: In 2002, a multi-operating company in Nantong, Jiangsu Province used 200 hectares of water for polyculture of fish and Chinese mitten crabs. They planted Elodea, black-leaf algae, and bittergrass in the water to create a natural environment. In the environment, no banned drugs such as chloramphenicol and furazolid were used during the breeding process. In addition to fish, 697 kg of Chinese mitten crabs were harvested per hectare of water. All fish and crab products met the requirements of green food, and the market price was lower. high.