What should be paid attention to in the continuous cultivation of shrimp and rice?
At present, it is the prime time to grow shrimp, and farmers should pay attention to the following points when throwing prawns:
First, to do a good job in the basic transformation of rice fields is mainly to open ditches, strengthen embankments, build a good drainage system, and set up anti-escape facilities.
Second, to do a good job of ditch disinfection, it is best to sprinkle with quicklime, with a dosage of 100 jin per mu, and plant shrimp a week later.
Third, select the individuals who are mature, healthy and with complete appendages and put them at 3:1 according to the ratio of male to female. If you put 15-20 kilograms of shrimp per mu, the rice fields that have been raised before can be halved.
4. Choose fine weather when safe stocking, choose 18 mi 28 degrees temperature, sunny evening release, pay attention to the temperature difference, if the temperature difference is too large, the lobster should be soaked in the rice ditch for 1 minute, repeat 2 Mel 3 times. When you put it, you should choose to put in more points.
Fifth, to do a good job in transportation to reduce deaths in long-distance transportation, it is best to choose foam boxes or plastic baskets, each basket should not be loaded more, it is best to carry 25 jin in 20fu. If the temperature is high, ice hanging can be used for transportation.
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Prevention and treatment of soft-shelled turtle mumps
In the process of raising soft-shelled turtles, if the water quality is not good and disinfection is not strict, it is very easy to make soft-shelled turtles suffer from parotitis. Once the disease occurs, it will cause a large number of deaths. The disease is easy to occur in young soft-shelled turtles, if not handled properly, it can lead to the destruction of the whole army, so it is necessary to prevent and cure it seriously. In this paper, the prevention and treatment of branchitis of soft-shelled turtle are introduced. First, the pathogenic soft-shelled turtle is caused by virus and secondary bacterial infection. Second, the activity of the diseased soft-shelled turtle is weakened, often lying on the edge of the pool or on the eating table, the neck is swollen and cannot stretch freely, but the epidermis is not red, the whole body is edema, and the abdominal nail is pale.
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What does the river eel eat? How to "domesticate"
River eel is a carnivorous fish. Generally speaking, river eels feed on clams, shellfish, clams, fish, shrimp and animal carcasses. In artificial feeding, artificial formula feed can be put in, but the protein content must be more than 45%. River eel is a nocturnal animal, mainly foraging for small natural animals. In artificial feeding, the stocking density is high, which can not be satisfied only by natural bait, so it must be supplemented by artificial feed. At the beginning of feeding artificial feed, the river crab is not used to it and does not come to eat, so it must go through the stage of "domestication" to make it accustomed to eating artificial feed and develop the habit of eating regularly and in a fixed position.
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