Before the new century, the prices of eel and whitefish were almost the same, and they were also low-priced bulk fish. The fishermen's enthusiasm for farming was generally simple, but with simple mixed farming, it was better than nothing.
However, once in a while, a delicious fish head dish swept the north and south of the river, such as casserole fish head oysters, squid fish head, iron plate fish head, fish head hot pot, etc., which led to the popular squid. In recent years, the price trend of squid has been linked to grasshoppers, grasshoppers, grasshoppers, and oysters.
Other bulk freshwater fish such as sea bream are significantly different, and the average price has risen year after year. The production enthusiasm of the vast number of fishermen is clearly mobilized. However, contrary to expectations, many fishermen said that
The original price was low, and the carp grew up unwittingly. Now it is particularly concerned about how it can be difficult to grow up.
This is why? The author as a first-line pond grower, in recent years farming squid has a small experience, get good economic benefits, is willing to share some of the experience of several years to share with you, I hope to be able to enlighten her colleagues.
1, pond preparation. The main carp pond requires a larger area, generally at least 5 acres or more, with a depth of about 2 meters. Ponds with larger areas and deeper pools have better buffering properties and do not cause sudden changes in water quality due to excessive feeding and fertilization. The disadvantage is that fishing is inconvenient, but the carp is honest and chronic, even if it is 50.
The acres of ponds can also be caught. It is required that the sediment of the pond is clay or loam, and the water retention and fertilizer retention performance is good. The pond is well-watered, convenient to enter and drain, and is airy and light-permeable. No toxic and harmful substances endanger the safety of fish ponds.
Ponds generally clear ponds and disinfect fish before they are released, and then use fertilizer and water. When the pool water is tested and confirmed safe, fish fry can be released.
2, the law of stocking. Regardless of whether it is the main breeding or breeding, the carp should be particularly well-handled. Because artificial feeding is similar to flowering and white feeding, the daytime is lively and agile.
Due to the large amount of slow-growing food, the eel's character is in conflict with the Japanese eel, and it is often unfavorable to eat. The growth is severely curbed. For the first time the main carp raiser, it is not recommended to stock the whitefish; if there is a certain amount of experience, a small amount of whitefish (1:8-10 to the carp) can be stocked at discretion, and the size is smaller than that of the same carp, preferably Wait until the squid has tamed successfully before stocking. In the Yangtze River basin, if it is mainly white plover and squid is supplemented with normal polyculture of intensive culture ponds, it is necessary to pay attention to a rule that the maximum amount of ponds per mu of squid is only about 40 kg. The reason is that the feed biomass in a Muhuabaipi mixed fish pond is only enough to maintain the survival of 40 kg of carp, and it is difficult to meet its growth requirements. In general, the stock of carp in a mu mixed fish pond is generally enough. It grows quickly within 25 kilograms, and then it gets slower and slower. When it reaches 40 kilograms per mu, the population almost no longer grows. Fishermen can refer to this rule to determine the number and specifications of stocking and catching in polyculture ponds. In view of this, and in view of the higher price of catfish standard on the market,
The traditional production method of “get rid of foot and catch big and stay small†is not as good as “round catching and rotating†in the production of squid in the Baibaiji mixed pond.
The main carp should pay attention to the stocking of the middle and lower high-value fish because it can make full use of the pond water body.
It can bring great benefits. In particular, there are few special breeds with conflicting food habits, such as turtles, shrimps and crabs,
As well as the seedlings, the high price of herring and herring
The scales, such as jawbone and barracuda, are good collocation objects. If there are grasses, they can also be used with a small amount of grass carp or head pupae. However, the ratio of fish rearing should be well controlled, so as not to affect the normal feeding growth of the main fish, it is generally appropriate to use less than 20% of the total output. The practice of blindly increasing the ratio of fish stocks is not desirable. It is worth emphasizing that there must be some carnivorous fish in ponds with wild fish. Otherwise, the wild fish will easily multiply and form dominant populations, which will seriously affect the growth of carp. It is better to use carp and squid to feed net fish and catch net fish. Fish species are sterilized with salt, iodine, or potassium permanganate before stocking.
3, water quality management. In general, before fry stocking,
Basal fertilizer should be applied first and wait until the peak of rotifers to release mu. In winter and spring season, manure and green manure are mainly applied, and the transparency is kept at about 20cm. The pond with very good water quality and low transparency must pay special attention to rushing new water in summer and autumn. It is usually every week to half a month to make the water transparent. Maintain at
About 30cm, at the same time, according to water quality, the emphasis is placed on the application of inorganic fertilizers and other fertilizers to ensure that the water quality is “fat, live, tender and coolâ€, and the water color is converted between the brown algae and yellow-green algae. Injecting new water is not only to improve the dissolved oxygen in the pond, but more importantly it can greatly promote the metabolism of plankton. Experienced fishermen will find that every time the pond flushes water, the fish will obviously grow up. There are a variety of biofertilizers for fish on the market. However, if they are used throughout the process, the cost is high and they are not economical. However, with the use of other fertilizers, the effect is still good. Under the premise of water quality control, the use of various fertilizers is almost as good as possible. Extensive plankton and organic matter in the pool water can greatly promote the growth of carp. Of course, it will greatly reduce the feed coefficient and reduce the cost of cultivation. According to the author's experience, in the Yangtse River Basin, relying solely on fertilization, the good net production capacity of the main carp carp management reaches 75 kg/mu.
4, feeding. Trout head raises higher yields
It must be baited. The bait may be wheat bran or rind, but the effect is not as good as the special squid feed. The carp feed consists of cake pancakes, bran, fish meal and other additives. It requires higher nutritional value than grass carp feed, and is similar to omnivorous fish such as carp and carp. It is generally made into a powder and contains more than 30% crude protein. When the water temperature reaches 15°C in the spring, it is better to slowly tame on the upper wind, which is similar to tame other edible fish, but the time may be slightly longer. In the summer and autumn season, when the water temperature is above 26°C, it is the fastest growing season for carp. It must be combined with water quality management to enhance feeding. After the success of carp training, the feeding amount is generally 1% to 3% of the body weight of the fish and it is fed 2-3 times a day. During feeding, the general group moves around the food market, the head is half-dew, and even the water In the feed intake, the overall performance is not as intense as that of other food-eating fish. It is relatively mild, and the feed coefficient is generally between 2-3. Some people use extruded bulk buoyant feed to feed sturgeon. Although the feed quality is very good, the effect is not ideal. The fish grows unevenly, the size is very different, and the feed coefficient is very high. The population yield is also general.
Some people use snakeskin bags packed with sesame oil residue, vegetable oil residue, dried chicken manure, and other powdery feeds. Hanging in the pond, the wind is quiet and sunny. Usually, one sack per acre hangs. When the carp group is hungry, they will touch their pockets to eat. This method is particularly suitable for the use of low-cost ponds that are easily sourced from oil mills, and they are used by cage farmers for better results.
5. It is better to keep well-kept even when it comes to logistics. Today, it is necessary to stagger the peak of centralized listing and choose the right time to market. Summarizing the laws of the market, from April to September each year, the price of squid can often be more than 40% higher than the price of fish before the Spring Festival. Such a large difference is enough to make the difference in the net benefits of the farmer. The author believes that such a price rule is difficult to change for a long time. Because of the large surface area that accounts for a large proportion of salmon production,
Because of restrictions on fishing policy and fishing methods, the Great Reservoir is unlikely to change its current mode of production. They can only list fish in the cold season. The general polyculture of fish ponds, because of the helpless "40 kg per mu" limit, can not significantly increase production. Therefore, as long as the pond owner raises the squid, he only needs to make a careful production plan, arrange a good time for the exit, and try to catch up with the listing of “hot water fishâ€, so there is no need to worry about market sales. In general, if one mu of stocking does not exceed 100 large-species fish species, it is best to buy sub-species-sized fish that are purchased at a price of 1 kg or more before the Chinese New Year holiday, and feed on the squid-specific feed, in the coming summer. Large size commercial fish that can grow to more than 2.5 kilograms earlier can be ordered on the market. If fertigation is mainly used, and bran is supplemented, it is easier to develop specifications of about 2 kilograms. After the adult fish are listed, the vacated Tongkou can raise another season of fingerlings; of course, if the large-sized species of puffer fish is of convenient origin, the next round of production can be carried out immediately, so that it can produce two seasons or two years of production in three seasons. Although this kind of stocking mode is not high in output, it has not invested much and the benefit is very stable.
6. The disease resistance ability of large-sized squid species is very strong, and there are generally no incurable diseases. Occasionally parasitic diseases occur.
Hemorrhagic disease, control technology is also more mature, will not cause greater losses.
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