Barley breeding technology

First, site construction
1. Site selection Tidal intertidal zone Huai Tu aquaculture is to choose mudflat tidal flats with small waves, smooth beaches and smooth tides. For high-water aquaculture, choose a flat, easy-to-drain orgasm area. The traffic around the breeding site is convenient and there is no pollution from three wastes. The water quality complies with NY5052.
2, build an intertidal beach culture. The large blocks of beach are separated into 3-5 meters wide rakes, and a small ditch is opened between the culverts for drainage and access, and a small embankment is built around the hoeing site. Highly painted aquaculture. The high-coating construction divides the high dam and low two modes. The height of the dam is 2.5-3o meters high, the top width is 4-6 meters, and the bottom width is 10-12 meters. Farming beach surface should be sun-dried, remove impurities, prevent disease and harm.
Second, the seed stocking selection of individuals evenly, no damage to the shells and the time from the water does not exceed 2 days of seed, the shell length of 1-2 cm. From March to May each year, when the water temperature rises above 9 degrees, stocking should be carried out. When stocking is raised, the stocking should be uniform and the wind should be sowed with a density of 100-300 g/m2.
Third, aquaculture management
1. Inter-tidal beach culture Seedlings were planted for 3-4 days. The survival rate of the seedlings was checked and more deaths (>10%) were found. The seedlings were added in a timely manner. In the breeding process, the growth of the barley is often observed, and the density is sparse at the right time, and the green crab and Other predator organisms are promptly removed.
2. In addition to the intertidal aquaculture management, the high-water-storage aquaculture should also regularly use treated organic fertilizers or inorganic fertilizers to cultivate food organisms. The transparency of the water body should be controlled within 0.3-0.4 meters. Change the drainage once every 15 days, change the amount of water every time about 30%, 20 days before catching, prohibit fertilization, completely replace the water more than 2 times to keep the water fresh.
Fourth, when the barley grows to the product specifications (shell length ≥ 3.0 cm), ebb or drain water, use dig, pick dig.




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