Crayfish breeding zoning breeding system and method in rice field

Abstract

The invention discloses a crayfish breeding zoning breeding system and method in a rice field. The crayfish breeding zoning breeding system comprises the rice field and circular grooves formed around the rice field, an inner slope and an outer slope are arranged on the two sides of the circular grooves, a breeding platform is arranged on the inner side of the inner slope, a purse net is built on the breeding platform to divide the breeding platform into a large platform and a small platform, an anti-escape net, a water inlet and a water outlet are formed in the outer slope, and elodea nuttallii is planted in the large platform and the small platform. The breeding method specifically comprises the steps of rice field selection, water level management, feeding management, water quality management, fry releasing and catching. Crayfishes are subjected to zoning breeding, so that the zoning management of breeding and adult crayfish cultivation are realized, and the nutrition management accuracy and the feeding reasonability are ensured; and the breeding method of the crayfishes is improved, the size and the number of adult crayfish seeds in an adult crayfish breeding area can be controlled, the breeding density is reasonably controlled, the growth speed of the crayfishes is increased, the specification and the proportion of the crayfishes are increased, the breeding seasons in autumn and winter can be fully utilized, and the breeding time is saved.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a system and method for cultivating crayfish in paddy fields and partitioning them. Background technique [0002] Rice field farming of crayfish is currently a major mode of crayfish farming. The "crayfish-rice" continuous cropping model with rice fields as the ecosystem is the most dominant model of "comprehensive rice and fish farming" in my country. Currently, the area of ​​this model accounts for More than 70% of the national crayfish farming area. [0003] However, traditional rice and shrimp farming has the following problems: [0004] Rice and shrimp farming often adopts the form of self-propagation and self-cultivation. Due to the breeding habits of crayfish, the hatching time of shrimp eggs and shrimp seedlings in rice fields is inconsistent. There are crayfish of different sizes in rice fields, which brings difficulties to feed selection. It is difficult to achieve...

AI Technical Summary

Problems solved by technology

[0004] Rice and shrimp farming often adopts the form of self-propagation and self-cultivation. Due to the breeding habits of crayfish, the hatching time of shrimp eggs and shrimp seedlings in rice fields is inconsistent. There are crayfish of different sizes in rice fields, which brings difficulties to feed selection. It is difficult to achieve precise nutrition and reasonable feeding;

[0005] Traditional rice and shrimp farming does not clear ponds in paddy fields and ring ditches. After many years of cultivation, the number of crayfish in ponds in paddy fields is not accurate, and it is difficult to predict the amount of feed fed; If the density is too high, the growth rate of crayfish will slow down, and the size of crayfish in the pond will be small, the commodity value will be low, the price will be low, and the income will be low; the increase in density will also increase the difficulty of pond management and increase the risk of disease outbreaks; density The uncontrollability also leads to a long overall breeding time and delays the breeding season of crayfish;

[0006] In the traditional rice and shrimp mode, the water temperature is low during the winter breeding process. After watering, it is necessary to manage the water quality and feed feeding of the entire paddy field. It is difficult to fertilize and water, and the feeding is scattered, and the input cost is high.

[0007] The patent of invention with the publication number CN110367162A discloses a cultivation method for raising and separating crayfish in a paddy field. By adopting the cultivation mode of raising and separating, the nursery area is used to cultivate shrimp seedlings to provide shrimp seedlings for the growing area; the growing area passes Accurate stocking, density control and controllable production, but there are still problems such as unclear number of crayfish storage ponds and difficulties in fertilizer and water in winter

[0008] The invention patent with the publication number CN111789057A discloses a healthy and efficient crayfish farming system and method under the continuous cropping mode of shrimp and rice, which includes the adult shrimp breeding area on the field surface, the inner ridge, the shrimp seedling ditch, the outer ridge and the corridor, through water level control and Fishing in batches realizes the cultivation of shrimp juveniles and adult shrimp, but there are still problems such as the number of crayfish in the pond is not clear, and it is difficult to fertilize and water in winter

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