Method for alternately breeding South America white shrimps and giant freshwater prawns for three batches in pond greenhouse

Abstract

The invention discloses a method for alternately breeding South America white shrimps and giant freshwater prawns for three batches in a pond greenhouse. The method comprises the steps of building the pond greenhouse, cleaning and sterilizing the pond greenhouse, breeding the South America white shrimps and the giant freshwater prawns in a small shed, arranging offspring throwing time of the three batches, throwing fodder, managing water quality, supplementing oxygen in a combination mode, preventing and controlling diseases, and fishing the South America white shrimps and giant freshwater prawns of the three batches. The method is characterized in that the small shed is built in the greenhouse, and the offsprings are thrown to a pond after being bred in the small shed in a storing mode; the offsprings of the South America white shrimps of the first batch are thrown from March 18th to March 22nd, the offsprings of the South America white shrimps of the second batch are thrown from July 1st to July 6th, and the offsprings of the giant freshwater prawns of the third batch are thrown from October 20th to October 22nd; the first fishing time of the South America white shrimps of the first batch starts from May 20th to May 25th, and the last fishing time of the South America white shrimps of the first batch and pond clearing start from June 10th to June 20th; the first fishing time of the South America white shrimps of the second batch starts from October 5th to October 10th, and the last fishing time of the South America white shrimps of the second batch and pond clearing start from October 18th to October 20th; the first fishing time of the giant freshwater prawns of the third batch starts from November 18th to November 20th, and the last fishing time of the giant freshwater prawns of the third batch and pond clearing start from December 18th to December 25th.

Description

technical field

[0001] The invention relates to aquaculture, in particular to a method for three-crop rotation cultivation of Penaeus vannamei and Macrobrachium rosenbergii. Background technique

[0002] Vannamei( Penaeus vannamei ), the scientific name is Litopenaeus vannamei, which is a wide-temperature and wide-halt tropical shrimp. It can grow under the conditions of 18-32°C and salinity 1-40‰. It is an excellent desalinated cultured species. Penaeus vannamei has the advantages of large individual, fast growth, low nutritional requirements, and strong disease resistance. It has a strong adaptability to changes in water environment factors, has low requirements for feed protein content, has a meat yield of over 65%, and survives out of water. It has the advantages of long time and other advantages. It is an excellent variety for intensive high-yield farming. It is currently the shrimp species with the highest single output among the three major cultured prawns in the wor...

Examples

Embodiment Construction

[0008] 1. Pond greenhouse construction and cleaning and disinfection: build a large-span flexible steel wire rope plastic greenhouse above the pond, each pond covers an area of ​​4-5 mu, and then build a small shed in the greenhouse, and excavate 300- A small pond of 400 square meters, the water depth is 1.0-1.2 meters, a small amount of silt is left at the bottom of the pond, and a layer of plastic film is covered on the top of the earthen pond, and oxygenation equipment is equipped; 100-150 kg of quicklime per mu is used one month before the seedlings are stocked. The whole pond is disinfected; after the seedlings have been stocked in small sheds for 15-20 days (Macrobrachium rosenbergii seedlings can be stocked in ponds outside the greenhouse), they are put into ponds for breeding management.

[0009] 2. The time and density of three crops of seedlings: the first crop of Penaeus vannamei is released in ponds from March 18 to 22, the size is 1.5-2.0 cm, and 50,000 to 60,000 f...

technical field

[0001] The invention relates to aquaculture, in particular to a method for three-crop rotation cultivation of Penaeus vannamei and Macrobrachium rosenbergii. Background technique

[0002] Vannamei( Penaeus vannamei ), the scientific name is Litopenaeus vannamei, which is a wide-temperature and wide-halt tropical shrimp. It can grow under the conditions of 18-32°C and salinity 1-40‰. It is an excellent desalinated cultured species. Penaeus vannamei has the advantages of large individual, fast growth, low nutritional requirements, and strong disease resistance. It has a strong adaptability to changes in water environment factors, has low requirements for feed protein content, has a meat yield of over 65%, and survives out of water. It has the advantages of long time and other advantages. It is an excellent variety for intensive high-yield farming. It is currently the shrimp species with the highest single output among the three major cultured prawns in the wor...

Examples

Embodiment Construction

[0008] 1. Pond greenhouse construction and cleaning and disinfection: build a large-span flexible steel wire rope plastic greenhouse above the pond, each pond covers an area of ​​4-5 mu, and then build a small shed in the greenhouse, and excavate 300- A small pond of 400 square meters, the water depth is 1.0-1.2 meters, a small amount of silt is left at the bottom of the pond, and a layer of plastic film is covered on the top of the earthen pond, and oxygenation equipment is equipped; 100-150 kg of quicklime per mu is used one month before the seedlings are stocked. The whole pond is disinfected; after the seedlings have been stocked in small sheds for 15-20 days (Macrobrachium rosenbergii seedlings can be stocked in ponds outside the greenhouse), they are put into ponds for breeding management.

[0009] 2. The time and density of three crops of seedlings: the first crop of Penaeus vannamei is released in ponds from March 18 to 22, the size is 1.5-2.0 cm, and 50,000 to 60,000 f...