The content of dissolved oxygen in water affects the catch. What are the factors that affect dissolved oxygen in water?

The content of dissolved oxygen in water affects the catch. What are the factors that affect dissolved oxygen in water? Fishing in summer, many fishermen will encounter this situation. The same place was connected a few days ago, and there is almost no mouth in recent days! Obviously there are fish, why can't you catch them? Let the fishing friends puzzled! In fact, this kind of thing is related to the fishing weather in Dachuan. Weather factors, including temperature, air pressure and wind direction, directly affect the content of dissolved oxygen in water, and then affect the activities and openings of fish. Today, let's talk about the factors and laws that affect dissolved oxygen in water, so that everyone can know what to do when fishing!

0 1 The higher the temperature, the lower the oxygen concentration. Dissolved oxygen in water comes from photosynthesis of green plants in water and the dissolution of O2 in air. The higher the temperature, the lower the working ability of water quality dissolved oxygen, so the dissolved oxygen ability of water quality in hot summer is worse than that in four seasons.

It is also in the hot summer afternoon, when the temperature is the highest and the dissolved oxygen in the water is the least, so we eat fairy fish at noon. In summer fishing, most people choose the morning or dusk with suitable temperature and rich dissolved oxygen.

We all know that the heavier the water, the greater the pressure of water, and the worse the ability of oxygen fusion in the atmosphere. For example, it is difficult to see creatures on the seabed for several kilometers, so people must not fish too deep, for example, 10 meters, and the dissolved oxygen is very poor. I firmly believe that many fish can't walk easily in this deep layer. Generally speaking, the depth of 3-4 meters is most suitable for fishing, and it is difficult to catch fish beyond 10 meters.

The lower the air pressure, the lower the dissolved oxygen content in water. In summer, under the condition of low air pressure and hot weather, the fish in the water are extremely uncomfortable, and even some fish float. Isn't it strange to go fishing at this time without aviation? As a fishing friend, you must recognize this weather. From the specific experience, people will feel uncomfortable in this weather, such as before the arrival of heavy rain! This kind of low-pressure weather is very easy to happen in summer. You can check the weather forecast before fishing, beware of aviation!

The size of the water surface The more water there is, the greater the contact area between water quality and gas, and naturally more oxygen can be dissolved in the air. The more oxygen in water, the higher the temperature and the lower the air pressure in summer. Therefore, people had better choose a wide sea area when fishing, and fishing in lakes and reservoirs in summer is even more fascinating.

The stronger the wind, the higher the oxygen content in the water. Wind makes water move, increasing the contact area between water and air. This is similar to the principle of oxygenator, so fishing in windy weather is a good choice. Generally speaking, most of us will choose downward flow when fishing, because downward flow will also blow away a lot of fish food, and the fishing effect is good!