CATDOLL : CATDOLL: How to farm crabs and rice together

How to farm crabs and rice together

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Crab farming in rice fields refers to the use of the shallow water environment of rice fields supplemented by artificial measures to grow rice and raise crabs. The goal of increasing both rice and crab income is achieved. There are 320 million acres of rice fields in my country, of which more than 100 million acres can be used to develop rice field fish and crab farming. This is an important agricultural resource in my country. Making full use of the agricultural resource advantage of rice fields, vigorously developing rice field crab farming, implementing three-dimensional development, promoting grain and fisheries, and complementing each other's advantages are currently important measures to adjust the rural industrial structure, stabilize grain and increase income, guide farmers to get rich, and revitalize the rural economy.

In recent years, the scale of commercial crab farming in rice fields has been growing. Based on the practice of commercial crab farming in rice fields over the years, its significance is summarized as follows:

1. Using rice fields to breed commercial crabs can significantly increase economic income. Breeding river crabs in rice fields has changed the traditional way of farming, changing the single-crop farming industry to a comprehensive operation of planting and breeding, thereby improving the productivity of rice fields.

2. The development of crab farming in rice fields has greatly increased farmers' enthusiasm for farming and is conducive to stabilizing grain production. While producing commercial crabs, the production of rice fields generally does not affect the output of grain. This not only plays a positive role in stabilizing the grain planting area and grain production, but also ensures the supply of farmers' food and the smooth completion of the national grain ordering task.

3. Raising crabs in rice fields combines planting and breeding, complementing each other's advantages and promoting the development of ecological agriculture. After the crabs are released, they can use weeds, aquatic insects, benthic organisms, etc. as feed, and the crabs' excrement and leftover bait can be used as fertilizer to fertilize the fields, promoting the growth of rice. At the same time, the rice fields where the crabs live have a relatively fresh water environment with frequent water exchange, and the soil in the rice fields is moderately soft and hard. The dense rice plants are a good place for the crabs to hide, cool down, avoid enemies, and molt safely. This ecological condition is conducive to the growth of crabs. This combination of planting and breeding, where rice protects crabs and crabs help rice, is a benign ecological cycle that can effectively improve land utilization and output.

4. Increase the production of high-quality and high-end aquatic products. The increase in the production of river crabs has enriched the "vegetable basket". Rice fields have abundant aquatic plants, rich bait, suitable water temperature, and sufficient oxygen, which is an ideal environment for the growth of river crabs. The commercial crabs produced in rice fields are high-quality and high-end green foods, and are high-quality aquatic products that urban and rural residents like to eat.

5. Save labor and production costs, and improve product quality. Stocking river crabs in rice fields can kill weeds and insects, requiring less or no pesticides, and reducing labor input. River crab excrement and leftover bait can serve as fertilizer to a certain extent, reducing the amount of fertilizer used, saving production costs, improving water quality, improving the quality of rice, and reducing environmental pollution.

Could any professionals please tell me about the crab breeding and feeding techniques in rice fields?

1. Stocking crab seeds: To prevent crab seeds that have been transported over long distances from absorbing too much water when directly put into the field, which would affect the survival rate, they should be soaked in water for 1-2 minutes before being stocked, and then taken out and left for 10-15 minutes. Repeat this process 2-3 times, and then pour the crabs into a basin and put them into the rice field to let them crawl on their own. Remove the injured and dead crabs at any time to avoid affecting the water quality after being put into the pond.

The time of stocking crabs should be determined according to the time of pesticide sealing and weed control before rice seedling transplanting. If no pesticide sealing and weed control is used, stocking can be carried out in early spring. 75-150 kg of crabs with a specification of 100 crabs/kg can be stocked per hectare of rice field, and 60-120 kg of crabs with a specification of 150 crabs/kg can also be stocked.

2. Feeding: Feed is the material basis of crab farming. During the entire breeding process, river crabs mainly rely on artificial feed, in addition to using aquatic plants and benthic organisms growing and breeding in rice fields.

Feeding: Feed is the material basis of crab farming. In the entire breeding process, river crabs mainly rely on artificial feed, in addition to using aquatic plants and benthic organisms growing and breeding in rice fields.

The time of stocking crabs should be determined according to the time of pesticide sealing and weed control before rice seedling transplanting. If no pesticide sealing and weed control is used, stocking can be carried out in early spring. 75-150 kg of crabs with a specification of 100 crabs/kg can be stocked per hectare of rice field, and 60-120 kg of crabs with a specification of 150 crabs/kg can also be stocked.

(1) Field cleaning and disinfection

After the field is repaired, use 30-35 kg of quicklime per mu, add water and stir, and immediately sprinkle it evenly over the field to kill harmful organisms and pathogens. If it is a saline-alkali field, bleaching powder should be used for disinfection, using 3-5 kg ​​of bleaching powder per mu, dilute it with water and stir, and immediately sprinkle it evenly over the field.

(2) Applying basal fertilizer

10 to 15 days before transplanting seedlings in the rice field, water the field. Before adding water, put 130 to 150 kg of decomposed farmyard manure and 10 kg of superphosphate as base fertilizer per mu. After watering, harrow the field and press the base fertilizer into the field mud. It is best to distribute it about 5 to 8 cm above the ground surface.

Hello! This is Qiange Chatting About Cars. I am glad to meet you here. After seeing your question: "Please ask professionals to talk about the crab species and feeding techniques for crab farming in rice fields?", I want to say that I hope my answer will be helpful to you.

First, you can stock crab seeds: In order to prevent crab seeds that have been transported over long distances from absorbing too much water directly in the field and affecting the survival rate, they should be soaked in water for 1 to 2 minutes before stocking, then taken out and left for 10 to 15 minutes. Repeat this 2 to 3 times, then pour the crabs into a basin, put them into the rice field, let them crawl on their own, and remove the injured and dead crabs at any time to avoid affecting the water quality after being put into the pond. The stocking time of crab seeds should be determined according to the time of pesticide sealing and weeding before transplanting rice in the rice field. If pesticide sealing and weeding are not used, they can be stocked in early spring. 75 to 150 kg of crab seeds with a specification of 100 per kg can be stocked per hectare of rice field, and 60 to 120 kg of crab seeds with a specification of 150 per kg can also be stocked.

Secondly, feeding: Feed is the material basis of crab farming. In the whole breeding process, river crabs mainly rely on artificial feed, in addition to using aquatic plants and benthic organisms growing and breeding in rice fields. Types of feed: There are many types of feed available for river crabs, including animal feeds such as small fish, shrimps, silkworm pupae, earthworms, snail meat, clam meat, fish meal, blood meal, slaughterhouse scraps and insects. Plant feeds include aquatic plants, duckweed, algae, melons, cakes, bean dregs, bran and rice bran. In addition, artificial compound feeds can also be fed. Feed feeding method: In the early stage of stocking, carnivorous feeds such as small fish, pig blood, silkworm pupae, snails and clam meat can be fed; in the middle stage, plant feeds such as duckweed, pumpkin, wheat, bean cakes should be the main feed; in the later stage, food should be mainly animal feed, so that the crab body accumulates nutrition and increases its individual weight. The daily feeding amount is 5% to 10%, and it will increase or decrease according to the weather, water temperature and river crab feeding situation. The lower limit is taken when the water temperature is low and the upper limit is taken when the water temperature is high. It is best to check the next morning to see if the fish have eaten the feed fed in the evening.

Finally, I would like to say that the feeding of bait should be done at a fixed time, fixed location, fixed quality and fixed quantity. The bait is placed on the water plants in the crab ditch, and the feeding should be based on the season, weather, water quality and the feeding status of the crabs. The bait should be fresh, palatable and nutritious so that the crabs can eat well. The feeding time is once every day at 4 to 5 pm, because crabs have the habit of feeding at night. Feeding at 4 to 5 pm is more conducive to the crabs' night feeding. The feeding site should be set up around the ditch.