Lotus pond intercropping technology is a new type of ecological farming technology, with high economic and social benefits. Lotus root pond intercropping can save fish pond dredging and reduce the cost of farming; lotus root is an efficient cash crop that ensures stable income for farmers; at the same time, the yield of crayfish and loach in the set is high. Crayfish can be caught and marketed within half a month to a month; crayfish and loach are omnivorous animals that feed on the wormwood in the lower part of the fish pond, which can improve the water quality of lotus root ponds and facilitate the growth of lotus roots; loach not only has the function of dumping soil, but also its manure is a good organic fertilizer that can promote the yield of lotus roots; crayfish and loach are not cultured by fertilization; the transformation of hardened ponds, so that the idle Abandoned ponds are restored to use, improving the phenomenon of “smelly ponds” and “dirty ponds” in rural areas. Therefore, this diversified ecological farming technology not only saves social resources and improves the ecological environment, but also increases farmers’ income and economic benefits.
In the traditional model of aquaculture, fish ponds accumulate a lot of residual bait and fish waste, forming sludge rich in nitrogen, phosphorus, and other elements, which deteriorates the water quality of fish ponds. Once a traditional fish pond hardens, it is easy to “turn over the pond” and the production of cultured fish will be greatly reduced. Cleaning fish ponds requires a lot of human, material, and financial resources, which often leads to idle fish ponds, resulting in smelly fish ponds and sewage ponds, not only causing a waste of resources.
However, water high in nitrogen and phosphorus is ideal for growing lotus roots. Growing lotus roots in fish ponds can turn silt into wealth. Meanwhile, to make full use of water space, high-income aquatic products such as crayfish and loach are planted in lotus fields. Lobsters and loaches are cleaned before the lotus root germination period to prevent damage to the lotus root. After the lotus root farm is purified, the fish pond will be ready for fish farming after a few years. When a large amount of ammonia nitrogen settles in the sludge again, lotus roots can be planted in the fish ponds again, forming a new rotation cycle.