Autumn fish farming "four notes"

<

The autumn season is a good season for fish to grow fat. It is very important for farmers to do a good job of feeding and management during this period. A long-term experiment by fishery science and technology workers has shown that doing a good job in this period of time can increase production by about 30% compared to normal management. Doing a good job in the autumn will improve the breeding efficiency for fish listed before the winter, and it will enhance the ability of the fish to keep warm when it fails to meet the market specifications, thus laying a good foundation for the safety of the fish. What should you watch out for in the fall?
First, pay attention to dressing bait As we all know, there is a biological food chain fish culture, such as quail, squid, etc. need to filter food plankton. Therefore, in the autumn, it should be seen that water fertilization, cultivation of biological food bait in order to meet the needs of the growth of larvae and earthworms. The temperature is higher at the beginning of autumn, and fertilization should adhere to a small number of principles. If it is a fertilizer pond, applying a small amount of fertilizer can not only avoid the deterioration of water quality, but also keep the water quality fat, live, tender and cool. Generally, 2.5 mu of urea and 5 kg of superphosphate are applied in order to make the pool water green or tea green suitable. If it is the Qingshui half-lime pond, the human feces of fermented livestock are mainly used. Mushi 400 kg to 500 kg, applied at intervals of 7 days to 10 days, can quickly cultivate plankton, to meet the needs of fish feeding. At the end of autumn, if the water temperature drops, organic fertilizer should be used to make the pool water become fat, the water color turns thick, and the plankton is promoted to multiply, providing sufficient nutrition for the wintering of the fish.
Second, the temperature in the autumn began to drop significantly, the temperature difference between day and night was large, and fish began to accumulate energy to prepare for winter. At this time, on the one hand, it is necessary to ensure that sufficient green feed is fed, and the feed is fed once a day in the afternoon and in the afternoon, and it is advisable to feed each meal within 2 hours. On the other hand, it is necessary to increase the amount of concentrate feed, which can be mixed with bran, rice bran, peanut bran, and soy flour. Feeding once a day, the amount of the fed fish accounts for 2.5% to 3% of the total amount of fish. After October, the amount of fish fed is appropriately increased to ensure the nutritional requirements of the fish.
Second, pay attention to good water quality to maintain good water quality, to create a good environment for the growth of fish, is the key to promoting long-term fish.
Generally, fresh water should be poured once every 7 days to 10 days. The water volume should be changed from 20 cm to 30 cm each time. Second, 20 kg of lime should be poured on the surface of each mu. Quicklime neutralizes acidity, increases pH, releases nutrients, and improves water quality and sediment quality. Sprinkle once a month for 2 times. In the case of fertilizer ponds or ponds that are mainly fed with concentrate feed and ponds in supporting livestock farms, the water quality is easily eutrophicated. It is advisable to use 50 to 60 square meters of water on the surface of the bamboo rafts per acre pond to plant water. Floating lotus and water peanuts, etc., to absorb excess ammonia nitrogen, to improve the regulation of water quality. At the same time, water peanut leaves can also be fed grass carp.
Third, pay attention to prevent floating head to the autumn, intensive nutrient density, higher yield of the pond, due to a large amount of fertilizer feeding, organic matter content, frequent fish activities, prone to hypoxia floating head phenomenon. At this time, it is necessary to strengthen the patrol pool in the morning and evening, especially in the middle of the night. During feeding, once fish were found to be eating less, eating longer, and more residual bait in the pond, especially when the grass carp headland was swimming without signs of grazing, the water began to lack oxygen. If waves can be seen on the surface of the water during the day, the fish groups are frightened and visible waves are visible on the surface of the water, indicating that “drifting heads” have appeared. If measures are not taken in time, flooding is likely to occur. When fish heads are found to have signs of floating heads, aerators should be activated immediately to increase oxygen, or new water should be injected into the pond to increase the amount of dissolved oxygen. If there is no new water infusion and there is no aeration machine oxygenation, dissolve 5 kg or 20 kg of salt water with alum per acre, or use an oxygenating agent according to the instructions. At the same time, you should pay attention to clean the impurities in the water. To reduce pollution and purify water quality.
In addition, in the autumn, fishes are prone to enteritis, gills, red skin and other diseases, and prevention and control should be combined. The pond with 1 mu of water and 1 meter of water depth every half a month is splashed with bleaching powder and 1 kg of water. At the same time, it needs to be fed once with “Cyprevir” and “Fishikang” to prevent disease; if disease has already occurred, Continuous use of water disinfectant 2 times, feeding the bait a course of treatment (4 days to 5 days), can cure fish disease.
Fourth, do a good job of preparing for the winter season After autumn fattening fish is still not up to market requirements of pond fish, then be prepared to make it winter. Some pond fish need to be sub-species, sub-special pond culture winter. Fierce, carnivorous fish such as soft-shelled turtles, squid, leather beard, mountain spotted fish, earthworm ponds, etc., do not mix and bred too much, so as to avoid eating small, weak food and fratricide. Clear ponds must be sterilized for overwintering ponds to provide a good water environment for fish or fish species in Zhuantang. When winter is over, the ponds need to be filled with water. Generally, the water depth is 2 to 3 meters. The deeper the water, the warmer it is. If it is a pond that breeds tropical and subtropical fishes for the winter, we must also use a frost shed to use a sedge or woven film in the deepest position of a leeward pond, 20 centimeters from the surface of the water, and 80 to 100 square meters of frost protection per acre. A shed to keep the fish safe in the winter.

The fresh organic Huang Yuan Shu, whose diameter is 90mm, is selected with natural green without additives and high quality Huang Yuan Shu.
Organic apple, as its name implies, is from the organic agricultural production system, according to the organic certification standard production, processing, and certified by the independent organic food certification body and Apple products. Apples produced according to the organic food planting standards and production and processing technical specifications and certified and certified by the organic food certification organization. In the process of production and processing of apple, the use of synthetic substances such as pesticides, fertilizers, herbicides, synthetic pigments, hormones and other synthetic substances are absolutely prohibited, which conform to the requirements of the ecological system.

Organic agricultural soil fertilization is based on the relationship between root microbial soil and soil, taking comprehensive measures to improve the physical, chemical and biological characteristics of soil, and coordinate the relationship between root soil microorganism and soil.

Organic Golden Delicious 90 SpecificationsFresh Apple

Organic Golden Delicious 90 Specifications

Organic Golden Delicious 90 Specifications,90 Specifications Organic Golden Delicious,Fresh New Organic Golden Delicious,Tribute Grade Organic Golden Delicious

Ningxia Hongqiaozhigu Technology&Development Co.,Ltd , https://www.guofuhui-ec.com