The appropriate temperature in autumn is the peak season for the growth of Astragalus. In order to obtain high yield and high efficiency in the cultivation of Astragalus mongolicus, fall breeding management must not be delayed.
Improve water quality Dianchi water depth control is about 30 centimeters, timely removal of residual baits and dirt in the pool to maintain water quality "fat, live, tender, cool", fresh water, light brown or tender blue, and often changes, so that The pool is not old. Every 1 or 2 days, change the water 1 times, and regularly apply quicklime to adjust the pH to control the pH of the pool water to be between 7 and 7.8.
The optimum temperature for controlling the water temperature of Astragalus membranaceus is 24～28°C. In early autumn, the temperature is high, and the water temperature in the direct sunlight will rise rapidly, affecting the appetite of the jaundice and inhibiting its growth rate and even causing death. In this case, the water temperature should be controlled below 28°C. The method is: 1 Add water. When the temperature rises to around 35°C, let 1/3 of the surface water be released and fresh water be added. It is advisable to use a small flow of normally flowing water. The new water should be slowly added into the buffer. After a period of time, it will flow into the pool finely and the temperature difference will not exceed 2°C. 2 shade. A awning over the pool covers an area of ​​1/3 to 2/3 of the pool surface. Planting grape, loofah, lentils, and other cash crops next to the pool will allow the pool water to maintain certain light while avoiding high water temperatures. 3 kinds of grass. Water hyacinths, water lettuces and other aquatic plants are planted in the pool water, and the area of ​​aquatic plants is controlled below half of the water surface. A small amount of tiles, stumps, etc. are built in the pool for the yellow toads to inhabit, hide, and shelter.
To strengthen the feeding of autumn jaundice to eat well, it is necessary to ensure the quality and quantity of adequate feed supply and promote the rapid growth of jaundice. The bait is mainly based on fresh bait such as cockroaches, fly pupae, snail meat, and internal organs of livestock and poultry, and is supplemented with appropriate amounts of plant foods such as wheat bran, cake pancake, and fruits. After the animal foods are washed, they are soaked for 3 minutes with 200 mg of potassium permanganate solution per kilogram of water, then rinsed with clean water, and placed on a bait table about 3 cm below the surface of the water. In general, the amount of fresh bait is about 8% of the body weight of baicalin and the amount of dry bait is half of the bait. It is forbidden to feed the contaminated or spoiled bait. Feeding should adhere to the principles of timing, positioning, quality, and quantity, and special attention should be paid to the amount of feeding. If the amount of food consumed by the carp is reduced in bad weather, the feeding should be appropriately reduced.
The abrupt change of weather in the case of escape prevention and treatment will make the carp feel uncomfortable and uneasy, and it will wait for opportunities to escape, especially if it is thunderstorm or nocturnal rainstorm. Therefore, you should always check whether there is any crack in the wall or the bottom of the tank, whether the drainage network is in good condition and whether the water depth is close to the overflow level. In addition, the fall is also a high incidence of rickets, the common diseases and prevention methods are as follows:
1 cold disease. The main reason is that the temperature changes greatly, causing a drastic change in the water temperature and leading to a yellow fever. Strictly control the temperature, master the amount of water exchange, and prevent the temperature difference between the front and rear of the Dianchi Lake to be excessive.
2 fever. Because the pool water is too shallow and the water temperature is too high, the sickness is restless and often falls out of the water or lays on the grass and frequently swings its head, hunger without food, and finally dies. The preventive measures are to cool the shade and add new water. After the onset of jaundice, each cubic metre of water is sputtered evenly with 5 ml of 0.07% copper sulfate solution. Can also use 100 grams of green onions per cubic meter of water, salt, 50 grams, 15 grams of mulberry leaves mash into juice Quanchiposa, 2 times a day, once every 2 to 3 days.
3 hydromycosis. The mold spores absorb the skin and nutrients of the astragalus, and grow out of cotton-like hyphae outwards, and then spread and spread on the surface to form a white hair that is visible to the naked eye. Methyl blue 3 grams per cubic meter of water can be used to splash water to Quanchipi; it can also be splashed with 0.04% salt and 0.04% baking soda mixture.
4 Turnip disease. In the early stages of the disease, erythema with different sizes appeared on the body surface. The sides of the abdomen were a little congestive and inflamed. The skin was festooned when the disease was severe. There were irregular holes in the epidermis and they died of visceral infection. Prevention and treatment of the disease, can be used per cubic meter of water body 5 to 10 milliliters of rickets disease, Quanchiposa, used for 3 days; also per cubic meter of water body with 2 grams of Gallic Jianshui Quanchiposa, once every 2 to 3 days.
5 Hemorrhagic disease. The sickness fluctuates up and down or circling in the water. If it moves for a long time, it is unable to swim. It lies on the aquatic plants and is suspended dead. There are blood spots on the body surface, the shape of the plaque is variable, and the size is different. The area is serious and the entire body surface is weighted on the abdomen, with few on both sides and the mortality rate is high. One gram of erythromycin per cubic meter of water can be used to splash the water in the whole pool, and every 50 kg of radix scutellariae should be fed with 5 mg of sulfathiazole, once a day, for 3 to 6 days, or 1 in the feed. 3% of the rhubarb tablets fed has a good effect.
Improve water quality Dianchi water depth control is about 30 centimeters, timely removal of residual baits and dirt in the pool to maintain water quality "fat, live, tender, cool", fresh water, light brown or tender blue, and often changes, so that The pool is not old. Every 1 or 2 days, change the water 1 times, and regularly apply quicklime to adjust the pH to control the pH of the pool water to be between 7 and 7.8.
The optimum temperature for controlling the water temperature of Astragalus membranaceus is 24～28°C. In early autumn, the temperature is high, and the water temperature in the direct sunlight will rise rapidly, affecting the appetite of the jaundice and inhibiting its growth rate and even causing death. In this case, the water temperature should be controlled below 28°C. The method is: 1 Add water. When the temperature rises to around 35°C, let 1/3 of the surface water be released and fresh water be added. It is advisable to use a small flow of normally flowing water. The new water should be slowly added into the buffer. After a period of time, it will flow into the pool finely and the temperature difference will not exceed 2°C. 2 shade. A awning over the pool covers an area of ​​1/3 to 2/3 of the pool surface. Planting grape, loofah, lentils, and other cash crops next to the pool will allow the pool water to maintain certain light while avoiding high water temperatures. 3 kinds of grass. Water hyacinths, water lettuces and other aquatic plants are planted in the pool water, and the area of ​​aquatic plants is controlled below half of the water surface. A small amount of tiles, stumps, etc. are built in the pool for the yellow toads to inhabit, hide, and shelter.
To strengthen the feeding of autumn jaundice to eat well, it is necessary to ensure the quality and quantity of adequate feed supply and promote the rapid growth of jaundice. The bait is mainly based on fresh bait such as cockroaches, fly pupae, snail meat, and internal organs of livestock and poultry, and is supplemented with appropriate amounts of plant foods such as wheat bran, cake pancake, and fruits. After the animal foods are washed, they are soaked for 3 minutes with 200 mg of potassium permanganate solution per kilogram of water, then rinsed with clean water, and placed on a bait table about 3 cm below the surface of the water. In general, the amount of fresh bait is about 8% of the body weight of baicalin and the amount of dry bait is half of the bait. It is forbidden to feed the contaminated or spoiled bait. Feeding should adhere to the principles of timing, positioning, quality, and quantity, and special attention should be paid to the amount of feeding. If the amount of food consumed by the carp is reduced in bad weather, the feeding should be appropriately reduced.
The abrupt change of weather in the case of escape prevention and treatment will make the carp feel uncomfortable and uneasy, and it will wait for opportunities to escape, especially if it is thunderstorm or nocturnal rainstorm. Therefore, you should always check whether there is any crack in the wall or the bottom of the tank, whether the drainage network is in good condition and whether the water depth is close to the overflow level. In addition, the fall is also a high incidence of rickets, the common diseases and prevention methods are as follows:
1 cold disease. The main reason is that the temperature changes greatly, causing a drastic change in the water temperature and leading to a yellow fever. Strictly control the temperature, master the amount of water exchange, and prevent the temperature difference between the front and rear of the Dianchi Lake to be excessive.
2 fever. Because the pool water is too shallow and the water temperature is too high, the sickness is restless and often falls out of the water or lays on the grass and frequently swings its head, hunger without food, and finally dies. The preventive measures are to cool the shade and add new water. After the onset of jaundice, each cubic metre of water is sputtered evenly with 5 ml of 0.07% copper sulfate solution. Can also use 100 grams of green onions per cubic meter of water, salt, 50 grams, 15 grams of mulberry leaves mash into juice Quanchiposa, 2 times a day, once every 2 to 3 days.
3 hydromycosis. The mold spores absorb the skin and nutrients of the astragalus, and grow out of cotton-like hyphae outwards, and then spread and spread on the surface to form a white hair that is visible to the naked eye. Methyl blue 3 grams per cubic meter of water can be used to splash water to Quanchipi; it can also be splashed with 0.04% salt and 0.04% baking soda mixture.
4 Turnip disease. In the early stages of the disease, erythema with different sizes appeared on the body surface. The sides of the abdomen were a little congestive and inflamed. The skin was festooned when the disease was severe. There were irregular holes in the epidermis and they died of visceral infection. Prevention and treatment of the disease, can be used per cubic meter of water body 5 to 10 milliliters of rickets disease, Quanchiposa, used for 3 days; also per cubic meter of water body with 2 grams of Gallic Jianshui Quanchiposa, once every 2 to 3 days.
5 Hemorrhagic disease. The sickness fluctuates up and down or circling in the water. If it moves for a long time, it is unable to swim. It lies on the aquatic plants and is suspended dead. There are blood spots on the body surface, the shape of the plaque is variable, and the size is different. The area is serious and the entire body surface is weighted on the abdomen, with few on both sides and the mortality rate is high. One gram of erythromycin per cubic meter of water can be used to splash the water in the whole pool, and every 50 kg of radix scutellariae should be fed with 5 mg of sulfathiazole, once a day, for 3 to 6 days, or 1 in the feed. 3% of the rhubarb tablets fed has a good effect.