Large water surface stocking should be based on winter and spring blooms, and December and June of the following year are the best stocking seasons. Cold freezing is generally not suitable for stocking, so as to avoid frostbite crab species affecting the survival rate.
200-300/kg crab species are stocked at a density of 400-600 animals per mu. Areas with large areas, adequate feed, good water quality, and guaranteed funds can also be appropriately increased, but they must not exceed the natural feeding capacity of the waters. Before stocking, the crabs should be put on a temporary basis and the range should be larger. If the dehydration time is extended, it should be soaked in water for 1 to 2 minutes together with the net bag, and then removed and placed for 3 to 5 minutes. This is repeated 2 to 3 times until the young crab is fully absorbed and adapted to the environment. Delivery.
Large areas of aquatic plants are abundant and generally do not need to be fed with food before. The period from June to September is a period of vigorous growth of crabs. For the continuation and protection of aquatic plants, it is timely to feed snails, river clams, fish and shrimps, cereals, beans, and pumpkins. Generally, two feedings are conducted every day, and each feeding is conducted at 8 to 9 o'clock in the morning and 18 to 19 o'clock in the afternoon. The daily feeding amount should be calculated as 5% of the crab body weight. It should be fed in the deep water area of ​​aquatic plants in the morning and in the shallow water area of ​​aquatic plants in the afternoon. In the meantime, the aquatic plants that have been bitten off by the river crab should be removed in time to prevent it from spoiling the water quality. And to do regular splattered lime mixed with baits and internal medicine, to minimize the occurrence of diseases. Commonly used internal medicines include flunonic acid, heparin, and FRC vitality sources.
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