Second, early stocking, meticulous management. One of the high efficiency of shrimp farming is to grab the word “earlyâ€, early stocking, and grab the morning market. Early purchase of seedlings not only achieves the goal of low price and excellent quality for early seedling purchases, but also increases the cultivation time of greenhouses. In late February, nursery ponds were sterilized and plants were transplanted. Adhere to thinning the spermatophores and increase the area of ​​the shed. The pool area of ​​the shed is 1,300 square meters, laying the foundation for cultivating strong seedlings. During the cultivation of shrimps, it is carefully managed to use biological agents once every 10-15 days to adjust the water quality of nursery ponds, effectively preventing the deterioration of water quality and the occurrence of shrimp disease. In the first half of May, the water from the shed will be used to enlarge the water. The size of the larvae will basically reach 4-4.5 cm, and 40% will reach 5 cm. At the same time, a set of 0.1-0.2 kilograms per tail was used for the 650-flowered white pheasant. Third, pay attention to daily management. Before the shrimps were magnified, at the end of April, the basal fertilizers were applied and the plants were transplanted. To raise a pond, we must first manage a pond. Macrobrachium rosenbergii requires both high water quality and certain fatness. Therefore, strive to achieve scientific fertilization and reasonable fertilization, and strive to create a comfortable environment for the growth of Macrobrachium. After the shrimps are magnified, the water should be used every 15-20 days. The biological agents should be used once to improve the substrate and regulate the water quality. Usually strengthen the patrol pond, pay attention to observe the shrimp eating and activities. Elaborate management and scientific investment. The use of pellet feed feeders has been promoted to achieve uniform feeding and reduced feed wastage. Fourth, control and reduce shrimp disease. The prevention and control of shrimp disease focuses on prevention, insisting on "four determinants" and rational fertilization. During the hot season, fresh water is added as needed to regulate water quality. From 11:00 pm to 3:00 pm on sunny days, turn on 2-3 hours a day. Efforts were made to improve the water quality environment of shrimp ponds. Each net was 1-2 times sterilized with 1 iodine preparation or chlorine preparation, which effectively prevented and controlled the occurrence of shrimp diseases. 5. In the morning market, make a reasonable arrest. Early purchase of seedlings, early amplification of water, grab the morning market, can sell higher shrimp prices. In the ordinary course of time, it is necessary to grasp the market information in a timely manner and choose to start the listing at a timely time when the market price is high. In late June, it began to pull nets and sell shrimp. At the same time, when the price is higher before the end of August, it will be listed more; when the price is normal, it will have a good grasp of the number of listings, and it will be properly listed to properly improve the shrimp specifications. If the prices in the later period are relatively high or moderate, and the listing specifications are met, try to pull the online market and avoid late pressure ponds. Due to proper measures, good economic benefits have been achieved. By the end of October, a total of 10075 kg of Macrobrachium praecox had been harvested with a production value of 216,500 yuan. The price of adult shrimp reached 21.49 yuan/kg, an average of 0.2-0.3 yuan/kg higher than that of other households. In addition, the income of cultivars and flowers is 0.5 million yuan, and harvest income from rapeseeds and soybeans is 0.3 million yuan. The total output value is 224,500 yuan, and the net income is 93,500 yuan. The average yield per mu is 9,978 yuan, and the yield per mu is 447.8 kg. Mu net income is 4155.6 yuan.
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Macrobrachium rosenbergii
First, clear pond disinfection. Each year, after the dry pond is over, it insists on draining the pond and disinfects it with quicklime. Two years of bulldozing with a bulldozer. The sludge after hardening in the drying pond was pushed to the edge of the shrimp pond, which not only strengthened the radon, prevented the leakage, but also reduced the organic matter of the pond bottom and increased the amount of shrimp in the shrimp pond.