Raising fish for 28 years is easier and easier. How does he make more money every year?
Located in the south of Hubei province, Honghu is known as the "city of one hundred Lakes", "Water Town and country" and "Pearl of Jianghan". It is rich in aquatic resources and an important area for fish, shrimp and crab cultivation in Hubei province. The team recently traveled to Honghu to visit a local farm owner who has benefited from the upgrade of fishing equipment. He has been raising four large fish in Honghu for 28 years, and has witnessed the rapid development of aquaculture for 20 years.
Raise good fish first raise good water, using data to know good water
"140 mu pond farming is smooth, these years can basically achieve sustainable profit, benefit growth is obvious!" Talking about the current situation, honghu farmers owner proudly said.
The owner of the fish farm, as a native of Honghu, Hubei province, when talking about the changes in aquaculture in recent years, he sighed that "a few years ago, we were still comparing whose pond put more oxygen, the more advanced the concept of aquaculture, but in the past two years, we are comparing how to raise fish more easily and more money." In the uncertain environment, when everyone is still trying to cultivate by experience, and it is more and more difficult to cultivate, the owner of the fishing farm has taken the lead in practicing digital farming, and has obtained practical breeding benefits.
As the saying goes, "fish first raise water", the owner of the fish farm in his 28 years of fish farming practice deeply realized this point, he himself in summing up the experience, also think that the most key to the success of aquaculture is "good water", good water quality conditions equal to the success of aquaculture 80%. "In the past, I could only rely on my experience and eyes to see that fat, tender and cool water was good water. Since I came into contact with the concept of big data to guide aquaculture, I knew that this standard was not accurate or depended on data. Take green water for example. I used to look at this color and think it was ok, but now I take out my phone and look at the data indicators of dissolved oxygen and pH to see if it is in the range of 5-8mL/g (dissolved oxygen) and 7.5-8.5 (pH). If it is too low or too high, I need to adjust it. And the water is no longer used 3-5 days as before, but real-time observation of the data, once dissolved oxygen, pH value of the water quality indicators in the appropriate range, you can not use, to achieve precision medicine, and the product has no effect, it is clear at a glance."
From treatment to prevention, benefits are guaranteed
"Using smart equipment to monitor and view real-time water quality data, water quality control, precision medicine is on the one hand, on the other hand, it can prevent in advance, until a large area of dead fish and flooding pond, it is too late. Therefore, corresponding measures must be taken in advance to stabilize the water environment, so that the fish can grow in a comfortable water environment with less stress, and at the same time, improve the immunity of the fish by taking it internally, so as to reduce the incidence of disease, and change the idea from treatment to disease prevention."
Since being introduced to the Aquaculture iot system in 2019, the farm owner's thinking has changed, which he believes is the key to turning "passive" into "active" and achieving sustained profitability. "We used to worry every day about fish getting sick. For us, once there was a big outbreak, it was basically a waste of time. So we are very passive, only wait until the fish floating head, just know the fish disease, but this time is too late, can only rely on the use of a large number of medicine, can not cure, can only see whether the effect of the medicine. But now with the Internet of things online detection and control intelligent equipment, you can know the water quality in advance and in time. Once there is an imbalance, you can find out in time and take corresponding measures to control, so that the water quality index of the pond continues to stay within the appropriate range. It is like getting sick. There is a process of getting sick. If we prevent it in advance, many diseases can be avoided."
"This year, the rest of the four famous fish incidence is frequent, we haven't seen surrounding this a large area of dead fish, not a dead fish that is not possible, there are some sporadic dead fish, few to jin, is basically under control, don't have that into one thousand jins death even one piece is the situation of the pond."
The bait coefficient decreased by more than 20%, and the cost of feeding was reduced
As a good representative of the local area, farmers often gather at the farm owner's home to exchange technology and contact feelings. "Generally like this time, we feed the morning, will run to me here to exchange, before (when there is no data) to noon, we will pause, go back to feed, feed and then come back to continue."
"Before is not known, with experience farming, to the time to feed, feed three meals a day, you think the fish eat, in fact, the feed is bad in the water, sub-salt, ammonia nitrogen up, the pond water quality deterioration, in weather changes, it is easy to appear floating, turn the pond. With the guidance of data, precise feeding can be carried out, knowing when feeding is reasonable, not feeding when dissolved oxygen is low, so as to improve the feeding rate and reduce the feed coefficient.
After avoiding excessive feeding, the bait coefficient of the farm owner reduced from 2.3-2.5 to 1.8, which saved a lot of cost. The management is in place, and the breeding density is also improved accordingly. At present, the yield of gRASs carp per mu can keep above 3000 jin.
GRASs carp market broke out this year, with intelligent equipment, with the concept of intelligent fishery water balance as guidance, the use of big data to guide aquaculture, to achieve disease prevention, less disease, reduce the cost of fishing drugs; To achieve accurate feeding, reduce the cost of feeding; Although the cost of water diversion products is slightly increased, overall, the breeding cost is greatly reduced, the breeding efficiency is higher, the quality of fish is improved, and sustainable high benefits can be achieved.
"Intellectual" rehabilitation, management is easier
Fisheries boss, from 2017 began using water quality on-line monitoring system of the Internet of things, from the pond water quality basic attribute, regularly test records to open mobile phone can view real-time data and charts, the feeling is very wonderful, "like addictive, also may be lazy, but this kind of real time data for breeding is very much good." The owner turned on his mobile phone to show me how to check the data and switch on and off an oxygen generator in a farming pond a few kilometres from his home.
"Now I can use data to guide aquaculture. As long as the dissolved oxygen data is too low, I will start the aerator in advance, or set the value in advance, I can realize automatic switch of the aerator, and take corresponding measures to keep the dissolved oxygen data within the appropriate range of 5-8mg/L(according to the actual situation of the pond, it can be appropriately relaxed to 4-9mg/L). No chance for fish to float!" He introduced that the water quality on-line monitoring system with alarm function, once the dissolved oxygen content is lower than the set value of 2 mg/L (minimum four everybody fish species, slightly different from other varieties), can receive phone call, and the pond aerator will automatically open, use for four years in a row, very practical, ruled out the hidden trouble of the pond."
In addition to the online Water quality monitoring equipment, the owners have upgraded the pond's intelligent control system. "At least half of the management work used to rely on help, but farming is very unstable, and it is easy to go wrong if the management is not in place. Now, with intelligent equipment, I can know the situation of the pond at home anytime and anywhere, and it is easy and comfortable to manage the 140 mu fish pond." He said that the upgrade of equipment for farmers to benefit a lot, raising good farmers are not a road to black with experience, unchanged, to adapt to the development of The Times, be good at using high-tech tools such as intelligent equipment, learn to use big data to guide aquaculture progress, in order to achieve continuous improvement of aquaculture benefits.
