Why does she make a profit of 20,000 yuan per mu when she raises yellow croaker?

The picture shows Zhang Yuhua

Zhang Yuhua (hereinafter referred to as: sister Zhang) is very cheerful, optimistic, but also relatively strong, after all, this more than 100 mu of Tangkou, a lot of things are done by herself, did not expect so small. Her farm is located in Wangyan Village, Sigang Township, Luyang District, Hefei City. the car drove all the way over, and after entering the village, she obviously felt that the sky was bluer and the people were more comfortable.

Fish farming is like taking care of children, each child has different characteristics, and there is not a certain successful fish culture model. We should constantly explore and sum up according to our own pond mouth. Before April 2012, Sister Zhang was still engaged in the clothing business in Hefei White Horse Wholesale Market and lived a noisy urban life every day. In her words, now I can't go to the street several times a year, which I couldn't even think of before. To engage in breeding is to be able to stand loneliness. There are few residents near the farm, but Sister Zhang now enjoys this kind of life, watching her fish have a full sense of achievement, hard work and happiness. Whenever someone comes to buy Sister Zhang's fish fry, she repeatedly tells the person who buys the fry how to keep it and how to feed it. Because Sister Zhang already has a special affection for her farmed yellow catfish, she hopes that others will be able to raise the fish well when they buy it back from her.

Where there is input, there is output.

Sister Zhang's Tangkou actually covers an area of 105 mu, which requires an average of 100 kilowatt hours of electricity per hour when the bottom oxygen and 23 aerators are turned on at the same time from April to October. Dissolved oxygen can not keep up, affecting the later growth, can not be hard to resist, a little bit of fluke psychology can not have. Adult fish have higher requirements for dissolved oxygen. If you don't open the aeration machine every day, the fish will definitely not grow. In addition, the density must not be large, the dissolved oxygen is not enough, and the fish cannot be eaten for long.

When it was time for feeding, Sister Zhang took us to Tangkou to see her feed, pointing to a pond facing the door and saying that the pond had 3.5-40,000 seedlings per mu. Some time ago, the mouth price of yellow croaker pond was 12.5-13 yuan / jin. Because of the color fish incident, the price fell down at once, and now it is only 11.2 yuan / jin. Sister Zhang said that as long as she raised the fish well, the market was fair to everyone, as long as she went according to the market situation. As long as her psychological price reaches more than 10 yuan, it is impossible to make huge profits every season. If the management is in place, the cost is only 6.5-7 yuan, so even if it is 10 yuan, it is considerable. I calculated that according to the purchase price of 11 yuan per jin in Tangkou, even if only 35000 fish were invested, the average gross profit per mu would be 57750 yuan, and the net profit per mu would be at least 20000 yuan.

Pay attention to feeding

After pouring the material from the table, Sister Zhang clapped her hands and told me that the fish was familiar with her voice and knew it was coming to eat. Each bait table has a bait machine, this bait machine is not used for feeding, but uses the sound of the bait machine to attract fish to eat, just let the fish listen to the roar of the bait machine. Sister Zhang said that it was difficult to domesticate when the yellow croaker fry just got off the pond. Soak the bait into dumplings every day, clap your hands and put them along the edge of the pond. Basically 10 mu of a pond, more than a dozen ponds have to do this repeatedly, at the end of the day is still very tired, slowly train the fish to the bait table to eat the habit. Now before the seedlings under the big pond, are concentrated in a 4-5 mu of small pond for rough, generally just put the seedlings in 1 jin 1000, about grow to 1 jin 700-800, after 10-15 days concentrated domestication. If you buy back a relatively small seedling, you can mark it thicker for a few more days, and then divide the pond to eat No. 0 directly, and you don't need to domesticate it alone. When you hear the roar of the bait machine and the sound of Sister Zhang clapping your hands, the fish will know it's time to eat.

According to the eating situation, decided to feed every day, for example, 80% of the fish are still on this platform, we should continue to pour, if the fish do not move much, we can not continue to feed. The bait coefficient is related to the water temperature and weather. For example, when the water temperature is between 20 and 23 degrees, floating materials are fed at 1% of the carrying capacity of fish ponds. For example, there are 20,000 jin of fish in this pond, basically according to the standard of 200 jin. Before the meal was finished, Sister Zhang continued to pour in another package of ingredients, and the fish came up to eat again. Sister Zhang said that you can't wait until you've finished eating, or you won't eat the fish. The fish is very lazy, and it doesn't move in its own place.

Sister Zhang is more careful, for example, if she doesn't eat the fish very much, she can't continue to feed them. The fish is a temperature-changing animal, Sister Zhang said. It will rain tomorrow, and the water temperature today is lower than that of yesterday. If the fish is a temperature-changing animal, its body temperature will drop and its vitality will decrease. Encounter rainy days will stop eating for a day, to increase oxygen to prevent sudden changes in water quality, continuous rainy days, ammonia nitrogen is particularly easy to get up. Even if it is a good day, fish can not eat very much every day, just like people can not eat a lot, let its intestines have a proper rest, so that digestion and absorption function will be better. Sometimes, Sister Zhang will starve the fish every ten days and then feed them. If you want to increase the amount of feed, add it slowly every 3-5 days, not more at once.

A more ecological three-dimensional farming model

Sister Zhang has built many varieties in this pond: silver carp, silver carp, grass carp, carp, mandarin fish, herring, crucian carp, yellow catfish is the main culture. For example, some grass grows on the edge of the pond, there are 3-5 grass carps per mu, the grass on the edge of the pond does not need to be artificially cut, and mandarin fish can eat the small miscellaneous fish in the pond. Such a more three-dimensional breeding model will be more ecological. These varieties introduced by Sister Zhang can increase the income of tens of thousands of yuan in a pond. This year, she also wants to try to raise a season of white shrimp, a season of fish, she said that even if the profit of raising fish is the usual cost, it is good to earn money for raising shrimp.

Strengthen the physique, improve the water quality and make the fish less sick.

Ten years ago, Sister Zhang had a piece of skin in the abdomen and anus of Pelteobagrus fulvidraco that turned white and fester, a bit like skin rot. Some people say that it is best to give internal medicine to fish, the key is that she didn't eat much of the fish at that time. She also consulted a lot of people, and finally she combined her own method: using hydronic acid + glutaraldehyde + benzalkonium bromide at first is sprinkled every other day, it will be more expensive to sprinkle water mycophenolic acid. Seeing that the fish showed some signs of improvement, they were fed with Duowei + Yingzhiling mixture for a few days, then Sanhuang was used, and finally the intestines were conditioned with lactic acid bacteria. The most important thing is to adjust the physique of the fish and the water quality. Then constantly kill the water mold, kill every 5-6 days, adjust the physique of the fish, the food is easier to do. If you have a good physique, it is not easy to get sick, so adjusting the physique and water quality of the fish is the key.

Finally, I talked to her about similar questions on the APP platform of "Aquatic Village". She pointed to some answers on the platform and told me which answers were obviously answered by experienced people, which answers were basically relevant, and which were described in great detail. As if, for this yellow catfish, Sister Zhang has also become half an expert.