Operation Techniques for Breeding Several Special Fishes in Paddy Field

I. Breeding of the southern bigmouth bass. After the seedlings turn green, 50 litters of large-mouth bream species of 10 cm in size can be placed per 0.067 hectare, with 200 other fishes, and managed in accordance with the conventional paddy field cultivation method. Each 0.067 hectare can obtain more than 30 kilograms of adult squid and other species. 100-150 kg of fish.

Feeding: Feeds for bigmouth licks have crickets, animal viscera, etc. Their food is mainly eaten in the early morning and at night. Normal feeding 2 times, that is, about 6:00 in the morning 1 time, again in the afternoon 5:00 to vote 1 time.

2, fish disease prevention and control: If the disease is found, the fish species, with 2010-6 potassium permanganate solution dip for 15 minutes, the fish will be dispersed after the new water, the first 2-4 days with extermination 110- 6 Quanchiposa, use 3 days, pay attention to change the water.

Second, the aphid culture

1, stocking specifications and density: generally 0.067 hectares rice field stocking specifications 3-5 cm 鳜 800-1000 tail, halfway to catch large stay small.

2. Feed feeding: 500,000 hectares of water can be stored per 0.067 hectares. A batch of fish fed into the carp pond every 3-5 days is used as bait. In addition, wild fish such as alfalfa can be cultivated and used as food fish for alfalfa.

3, management and disease prevention: generally change the water once every two weeks, while flushing water when the water becomes rich, summer use of small aerator. Salmon disease is mainly caused by parasitic diseases, and 0.710-6 copper sulfate and ferrous sulfate mixture can be sprayed with 5:2. The effect is better.

Third, crab feeding technology

1. Before the stocking of crabs, it is necessary to thoroughly disinfect the crab-raising ditch, field ditch, and temporary holding pond. After the toxicity disappears, apply sufficient base fertilizer to fertilize the water quality. Usually, 200-300 kg/kg of crab species 2.5-3 kg can be placed per 0.067 hectare of paddy field. 1 000 species of summer fish are carefully reared for 8-10 months. At the end of the year, more than 10 kg of crabs can be produced per 0.067 hectare and more than 30 kg of fish.

2. During the April-May period, 200-400 kg of snails can be released for every 0.067 hectare of paddy field to allow them to naturally proliferate. As a high-quality animal feed for crabs, a part of egg-feeding shrimps, spawning cockroaches, etc. The bait.

3, to adhere to on-duty personnel, sooner or later the inspection of the field one, a check of water quality, two check crab feeding situation, the three check anti-fighting facilities in good condition, four check enemy invasion. The diseases of crabs mainly include crustaceans, gastroenteritis, and crab diseases caused by parasites. Each 0.067 hectare of crab-raising ditch or holding pool uses 10-15 kilograms of quicklime to dissolve the whole pool, which will play a role in disinfection and disease prevention. It can also supplement the calcium needed for the growth of crabs. At the same time, it must prevent the entry of predatory creatures and find that the enemy should be eliminated promptly.

Fourth, the cultivation of rice paddy shrimp

1. Field project construction: On the basis of the rice-fish culture project, widen a section of ring-shaped ditch and dig into a holding pool with a width of 8-10 meters and a depth of 1.5 meters or more. Shrimp farming and holding ponds account for 15%-20% of the total area of ​​rice fields. Inlet and outlet ports should be sealed with a tight mesh to prevent enemies from entering the water.

2, shrimp stocking: shrimp stocking is usually carried out in late June to early July, stocking shrimp specifications require more than 1.5 cm, 0.067 hectares of shrimp stocking capacity of 15,000 -220,000; generally choose sunny morning , put more points along the shrimp ditch around. In order to make full use of the shrimp ditch water space, it is also appropriate to put in part of the summer flower.

3, feed feeding: According to the different growth and development stages of the shrimp on the nutritional requirements, do a good job of the combination of bait. First, the basal fertiliser should be applied, timely fertilizer should be applied, and a large number of hornbeams, copepods, and bottom organisms should be cultivated. At the same time, a part of snails should be released from May to June, and 100-200 kg of water per 0.067 hectares of paddy fields should be transplanted. The growth and development of the shrimp provide abundant natural food. In the artificial feeding of feed, according to animal foods accounted for 40%, 60% of the ratio of plant food to feed, can also feed fed foods with crude protein content of more than 30%, should be fed mainly powder. From July to September, some plant feeds can be fed. In October, more animal feeds should be fed. In particular, some crushing snails and animal organs can be fed.

4, daily management: First, to establish a field inspection system, adhere to a daily morning and evening inspections, a check feed and shrimp feeding activity; second inspection of shrimp ditch water quality changes; three check enemy invasion situation. The second is to clear the enemy from the disease. The third is to use pesticides and fish medicines correctly. Fresh shrimps are particularly sensitive to drugs such as two or three emulsions, methamidophos, carbofuran, and addicts. They should be prohibited from use.

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