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How to judge the weight of floating head of fish
The weight of the floating head of a fish is mainly judged by the time when the fish began to float, the location of the floating head, the size of the surface of the floating head and the species of the floating head fish. 1. Dark floating head. Usually occurs when it is already dawn but the sun has not yet come out, when the fish move in the middle of the pond and on the surface of the wind, you can see bursts of spray. At this time, the dissolved oxygen in the pond water body is 2-3 mg / L, which is a normal floating head. two。 Light floating head. It often happens at dawn, when the fish are in the middle of the pond and on the surface of the wind, and the wild fish are at the edge of the pond.
2019-01-16 -
Several causes and prevention of floating head of fish
The "floating head" of fish is a common phenomenon in aquaculture production, and it is also an important sign to judge whether fish get sick or not and the change of water quality. However, many farmers do not understand the cause after discovering the "floating head" of pond fish, and drug administration only based on "experience" is often ineffective and even lead to a large number of deaths. In fact, the floating head of fish can be caused by a variety of factors. According to the cause, "floating head" can be divided into the following three types. The anoxic floating head is due to the low content of dissolved oxygen in the water and the farmed fish swim to a relatively high surface.
2019-01-16 -
What are the effects and effects of floating wheat with traditional Chinese medicine? How do you eat it? For insomnia?
I do not know if you have heard of floating wheat, it is a kind of traditional Chinese medicine, is the frivolous and thin fruit of wheat, and the effect of floating wheat is also recorded in ancient medical books, and has been used by doctors of all ages until now. What are the effects and effects of floating wheat? What?
2020-11-09 Traditional Chinese medicine float wheat efficacy and effect have what how -
Causes of floating Fertilizer in Rice
Causes of floating Fertilizer in Rice
2020-03-03 -
Several situations of floating head of fish and their countermeasures
Several situations of floating head of fish and their countermeasures
2018-09-08 -
Puffing floating material has many advantages in breeding four major domestic fish
The culture of grass carp with puffing floating water complete feed has many advantages such as low cost, high utilization rate and protection of culture water environment. In the United States, Japan and other countries with developed aquaculture technology, floating aquatic feed has been widely used since the 1980s to meet the needs of environment and fishery production. In recent years, China has also vigorously promoted the use of floating aquatic feeds, which has developed rapidly. Many famous and excellent aquatic species have been used in large quantities, but the use of expanded floating fish feeds for breeding four major domestic fish has not been successful.
2019-01-16 -
Promoting the use of environmentally friendly floating tools for Oyster Culture in Chiayi County to reduce Marine pollution
Oyster aquaculture is an important industry in Yunjiannan. The Baolilong floating equipment used in the shed will cause pollution and harm to the marine environment and ecology. Chiayi County-in order to reduce the use of Baolilong floating equipment, farmers have been continuously promoted to switch to regenerative compression in recent years.
2019-06-18 -
Integrated control technology of fish floating head
From June to October every year, the temperature is high and the weather is muggy. If the fish stocking quantity is too large and the water quality is bad, it is easy to cause anoxia floating head, or even suffocate to death. In severe cases, 1-2 hours can cause all the pond fish to die. Therefore, correctly analyzing the causes of fish floating head and identifying the omen and severity of fish floating head are of great significance to strengthen daily management and rescue Fantang in time. (1) the reasons for the floating head of fish. There are mainly the following aspects: (1) Blind excessive feeding and fertilization, resulting in excessive fertilizer of water quality, mass reproduction of plankton, and organic.
2019-01-15 -
What do you think of floating pole when adjusting five to three?
People who have fished know that both black hole fishing and wild fishing must be adjusted to improve the probability of the fish taking the bait. what do you think of the floating pole in five fishing and three? First, adjust five to catch three, what do you think of floating pole? Prepare the main line, sub-line and lead sheet, of course.
2020-11-11 Tune five fishing three how look at drift lift pole have been fishing fish people are all -
Causes and control methods of floating head and floodpond in fish
Causes and control methods of floating head and floodpond in fish
2018-09-07 -
The causes and control measures of the latest citrus floating peel
Citrus floating peel is a common physiological disease, which mainly refers to the gap separation between peel and pulp during citrus ripening, resulting in pericarp bulging, which mainly occurs in the later stage of ripening. So how to prevent clean floating skin? Come together.
2020-11-10 The latest citrus floating skin causes and control measures -
Floating Haitang Spring Sword
Sichuan downhill spring sword boutique floating plum: floating begonia, this kind of floating plum, elegant, dignified flowers, flowers high above the shelf, strong fragrance, easy to produce crystal art on the leaves. Floating Begonia, a new product of Spring Sword, the outer three petals turn back slightly when the flower is in full bloom, but not so much, floating like an independent beauty, and its shape is different from that of Spring Sword.
2018-03-02 -
Distinguishing between floating leaves and standing leaves of lotus bowls the habits and maintenance of plants
In the eyes of many potted friends, the leaves of pot-raised bowl lotus should always be floating on the water surface, and there will be no standing leaves. In fact, the bowl lotus can also stand out from the leaves, and sometimes it can bring people a kind of scene that stands out from the crowd. Of course, for most people, there are
2019-06-25 -
What are the skills of fishing and floating in winter?
What are the skills of fishing and floating in winter?
2018-07-03 -
How to adjust the drift of red worm fishing
How to adjust the drift of red worm fishing
2018-07-03 -
Why do so many people tear down windows? It's too late to regret it
In fact,"bay window" is very popular, especially popular with some young people, many young people have a literary feelings, and bay window is undoubtedly a very rich literary atmosphere, ask, which literary youth...
2018-07-02 -
Causes and control measures of citrus floating peel
Causes and control measures of citrus floating peel
2019-07-01 -
It's so practical to decorate the window and turn it into a tatami that can take in and rest.
I do not know since when, the floating window has become a necessary "decoration" in everyone's mind. There is a floating window at home, on which you can rest, read and bask in the sun. Especially.
2018-10-12 -
builds floating houses to dance with the water in Holland
In response to rising sea levels, the Netherlands builds floating houses. Ke Wenzhe said that it is necessary to turn Shezi Island into Amsterdam in the Netherlands. Because there are so many floods, the Netherlands has always had a sense of disaster. Let's take a look at foreign examples of how to co-exist with water. Holland.
2018-07-03 -
Penaeus vannamei is easy to float due to anoxia. How to prevent and control the floating phenomenon of Penaeus vannamei
Penaeus vannamei is easy to float due to anoxia. How to prevent and control the floating phenomenon of Penaeus vannamei
2018-10-28