What are the key points of operation of rice field fish farming, and what are the key points of rice

1. Paddy field engineering construction;

2. The selection of breeding species, the stocking specifications of fish fingerlings, the determination of stocking amounts, etc.;

3. Water quality regulation and management;

4. Scientific feeding management;

5. Daily management.

Rice and fish farming should be based on rice, taking into account fish farming. This guiding ideology is based on the theory of rice-fish symbiosis, and the artificial new rice-fish symbiosis relationship is used to transform the original rice field ecology into a more favorable direction, so as to achieve the purpose of increasing rice production and fish harvest. According to the guiding ideology of promoting rice production and fish farming, we believe that grass carp (50%-70%) should be the main fish culture in paddy fields, with some carp and Nile tilapia according to local conditions.

Key points of rice and fish farming technology:

1. The stocking species of rice field fish farming are suitable for herbivorous and omnivorous fish, such as grass carp, carp, crucian carp, tilapia, etc. Bighead carp can be stocked, but bream should not be stocked.

2. Rice-fish rotation, feeding and feeding, 100 120 grass carp fingerlings, 150 200 carp and crucian carp, 30 50 silver carp, 10 20 bighead carp per mu, and 200 250 kg per mu can be produced. The stocking time should be early, and the single-season rice field fish or rice-fish continuous cropping and edible fish should be stocked after the seedlings are transplanted and returned to green. Rice-fish rotation can be used to irrigate the fish immediately after the rice is harvested and catch fish before transplanting the rice in the following year.

3. Fish fertilization in paddy fields is mainly farmhouse fertilizer and base fertilizer. The use of chemical fertilizers should be controlled at a safe concentration, so as to avoid sprinkling directly into the fish ditch, and it can also be applied in rotation in half a field and half a field.

4. Before applying pesticides, the fish ditch should be dredged and the water level should be deepened. The emulsion pesticide dew is sprayed after drying, and the powder is sprayed with dew to reduce the amount of medicine falling into the water. It can also be sprayed in turn in half a field and half a field. If you notice that the fish is unwell, fill it with new water immediately.

Benefits of Fish Farming in Rice Fields

Fish farming in paddy fields can promote rice production. Rice and fish farming is a kind of connotation expansion reproduction, which is the reuse of national land resources, and can produce aquatic products without additional occupation of cultivated land. Local experience shows that the development of fish farming in paddy fields will not only not affect rice production, but will also promote the increase of rice production.

Rice fields with fish farming can generally increase rice yield by 5-10%, and higher yields can increase by 14-24%.

Rice and fish farming can increase aquatic products for the society and enrich people's "vegetable basket". In recent years, in Jiangsu, Sichuan, Guizhou and other places, rice and fish farming has become one of the main ways of local aquaculture.

Rice field fish farming can achieve a balanced market, which plays an important role in stabilizing aquatic products, stabilizing the market, meeting the needs of "vegetable baskets", and improving people's dietary structure. Especially in some areas where water resources are scarce and traffic is blocked, the development of rice and fish farming, local production, and local sales has effectively solved the long-term problem of "difficulty in eating fish" in these areas.

In the past, fish farming in paddy fields only raised a small number of species such as carp, crucian carp and grass carp, but now it has developed to stocking tilapia, silver carp, bighead carp, bream, catfish, river crab, loach, giant river prawn, green shrimp and other varieties, and can also develop the production of pingping, bamboo shoots, vegetables, edible fungi and other production for comprehensive aquaculture.

Stocked breeds can be selected according to different conditions in different regions.

In principle, all species suitable for pond culture can be cultured in rice paddy fields, but rice paddy fields are generally dominated by carp, and some crucian carp, tilapia, etc. can also be raised.

Carp can grow well in shallow water, omnivorous, can eat weed seeds, young roots, shoots, small underground stems, as well as some filamentous algae and various insects, mollusks, earthworms, zooplankton, etc.

The fish suitable for raising in the rice fields are: grass carp, carp, crucian carp, and tilapia.

Hehua carp, carp are generally raised in rice fields, crucian carp can be, too big is not good.

In the rice fields, grass carp can be raised, and loaches can be raised.

The cost of breeding these aquatic products in the rice field is low and the benefits are high: 1, the rice field fish farming rice field fish farming is mainly rice, taking into account the fish farming, not only can obtain fish products, but also can use the fish to eat the pests and weeds in the rice field, at the same time the fish excretion manure and turning the soil to promote the decomposition of fertilizer to create good conditions for the growth of rice, to achieve the purpose of increasing the yield of rice and fish, generally can increase the yield of rice by about one percent, the fish can be cultured to grass carp, carp, etc. 2. Rice field shrimp farming in the paddy field around the excavation of the ring ditch and the use of the shallow water environment of the rice field, both planting rice and breeding crayfish, rice in late April to early May under the planting of seedlings, in the end of May to early June began to plant seedlings, the use of shallow water, wide rows, dense plant planting methods, and appropriately increase the planting density on both sides of the ring ditch on the inner side of the ridge to play the marginal advantage.

The stocking size of crayfish is 200 300 kilograms, the density is 3000400 acres, and the time is in April and May. 3. Rice loach farming is a relatively simple way of raising loach in rice field, but it is necessary to heighten and strengthen the ridge, do a good job of anti-escape facilities at the inlet and drainage, dig a "well" shaped ditch in the field, 30 40 cm wide, 50 cm deep, 1000 2000 loach seedlings per mu, use livestock manure and compost as base fertilizer, feed soybean cakes, vegetable cakes, rice bran, etc. every day, field management according to ordinary rice field management, each mu can produce loach in more than 50 kg. Farmers breed these kinds of aquatic products in the rice fields, with low cost and high efficiency!

4. Rice field crab farming is a kind of rice and crab symbiosis planting and breeding mode, rice planting adopts large ridge double row, side row encryption, soil testing and fertilization, biological pest control and other technical methods, so that the crab rice field has sufficient sunlight and reduces diseases, which not only ensures rice yield, but also produces high-quality rice. River crab breeding adopts early temporary breeding, early feeding and early entry into the field, which can not only remove weeds in the paddy field and prevent rice insect pests, but also improve soil fertility with manure. 5. Rice field frog farming is a kind of rice frog symbiosis planting and breeding mode, which can not only control the harm of rice field pests, reduce the amount of pesticides, but also maintain the natural state of frog survival, which is conducive to the growth and development of frogs and saves the cost of raising.

At the same time, the increase in the income of frog farming in paddy fields is obvious, and the utilization rate of rice planting in paddy fields with free-range frogs is about 80%, although the total rice yield is reduced by about 20% due to the reduction of effective planting area, but the economic benefits are greatly increased. 6. The breeding mode of eel in paddy field is to use the paddy field with better water retention performance as a breeding base after a little transformation, and the transformation of the paddy field is mainly to dig one or several small eel ditches in the paddy field, and lay an anti-escape net on the paddy ridge. There are many advantages of eel farming in paddy fields, which do not affect the cultivation, management and harvesting of rice, and can also take advantage of the good shallow water conditions and shady environment in rice fields to carry out semi-artificial and semi-wild breeding of yellow eel, so as to improve the yield of farmland.

It is necessary to solve the problems of hygiene, environment, water quality, feed and geographical location. Because these problems are very important to farmers, we must pay attention to this aspect when raising fish in rice fields.

The depth of the water, the type of rice field, the variety of fish, the food that the fish eat, the temperature of the water, the air, the time of light.

Rice and fish farming should solve the problems of water quality of rice fields, water depth of rice fields, fish types, light, and temperature.

If you want to raise fish in rice fields, when is it better to stock fish fry?

The best time to choose rice to release fish in the early stage. It should be stocked as early as possible so as not to affect the normal growth of the fry and prolong the growth period of the fish. Usually in the early stage of rice, the fry are stocked in the whole field or immediately after transplanting, because the fish at this time are small and have weak mobility, which will not cause drifting.

If you place a fish of about 10 cm, you need to release the fish after transplanting to avoid drifting caused by fish activities. In the later stage of the rice field, as long as the ploughing is completed, the fish fry can be released. When stocking, it is necessary to pay attention to the temperature difference between fish feed and rice water, and control it at about 3 degrees.

The water from the paddy field can be added to the fish truck so that the two are very close together, and then the fry can be put into the paddy field.

Secondly, there are also skills in choosing fry. Fry with strong physique, neat size, and health and disease-free should be selected. Identification method:

Put the fry in a porcelain basin, and those who struggle violently and bend their heads and tails are strong fry. Before stocking the fry, place them in a plastic basin. Crush the egg yolk, dilute it with water, strain it with a 40-mesh polyethylene mesh and sprinkle it into a basin.

Feed 2 3 egg yolks per 10,000 fry. When the fry are full, they are thrown into the pond where the fish are released. Stocking density:

The stocking capacity of Wuzichi per mu is 15-200,000; In summer, the stocking capacity of the flower pond per mu is 10-150,000. The same batch of fry should be placed in the same pond, especially grass carp and carp, and it is absolutely forbidden to raise large or small sets. Fry should be released in good weather.

When stocking fry, stand in the wind and slowly stock the fry and let them swim into the water. Otherwise, the survival rate of the fry will be reduced.

Then you have to adjust the temperature difference. The temperature difference between the water in front of the pond and the water in the pond shall not exceed 2. If the temperature difference is too large, the temperature of the fry needs to be adjusted to be roughly the same as the temperature of the pond before release.

For fry transported in plastic bags, the plastic bags are placed on the surface of the water to "cool" for 1 hour before opening the pond.

Finally, it is necessary to fill the water in time. The pond is 50 cm to 60 cm deep and then filled every 3 to 5 days with 10 cm to 15 cm each time. During the breeding period, add water 3 to 4 times, and the final water depth is 1m to, and the water injection time should not be too long each time, so as not to top the water for a long time and affect the physique.

When filling water, pay attention to filtering with dense mesh at the water injection port to prevent wild fish and enemy organisms from entering the pond with the water. At the same time, do not allow the water to wash away the silt at the bottom of the pool and muddy the water.

Fry are generally best stocked in the spring, which is one or two months after the year. It is best to stocking fry when the water temperature reaches more than 18C, and the stocking of fingerlings should be earlier, and it is better to stocking when the water temperature rises to 8 12C after the sting. In the northern region, the water splash pond is generally better from the end of April to the middle of May, and the black boy is under the pond, generally in May and June.

It is better to stock the fry around 9 a.m. on a sunny day, and pay attention to the water temperature in the fish pond and the fry bag not to be too different.

It is best to stock the fry in the spring, and the temperature should be above 18, so that the fry can be used effectively.

In the south, it is possible to raise rice and fish in paddy fields, which are generally carp, commonly known as poached carp.