Aquatic experts teach you “fertilizer, live, tender, cool” pond water quality regulation method – Aquatic Forum – China Animal Husbandry Website – A useful animal husbandry website
Aquatic experts teach you “fertilizer, live, tender, cool” pond water quality regulation method With the implementation of the water product market access system, the production of pollution-free water products is an inevitable choice for aquaculture. Non-pollution-free water products, not only require water quality, but also meet (NY5051-2001) “Water Water Water Water Water Water Water Water Quality without Pollution Food”. Therefore, in the aquaculture process, we must first understand the good water quality standards in aquaculture, master the main parameters related to the quality of water quality and its role, and the control technology for the corresponding parameters, is especially important for the guarantee of breeding safety and product safety. I. Good Water Quality Standard “Fertilizer, Live, Tender, and Cool” is the experience of judging the quality of water quality in the long-term production practice. The total requirements for fishing fish is to create conditions for fishing. Always maintain “fertilizer, live, tender, cool”. Most of the concept of “fertilizer” is still based on the total amount of plankton as a standard or digestible floating plant. “Fertilizer” is the pool water contains rich organics and various nutritious salts, and it is produced or the transparency of water. The fertilizer of water, transparency 25cm ~ 30cm, the propagation of floating creatures, especially the types of easy digestion. “Live” is all substances in the pond, including biological and non-biological, are constantly, rapidly converted, forming a food biological substance circulation of a pond ecosystem. It is reflected in the variation of water with the water. It refers to the frequent changes in water and transparency, and living is due to changes in the creatures of the water, and the living water is generally referred to in water, and the knee algae, naked, and less blue algae. “Tender” refers to water and fertilizer, the so-called water “old” mainly has several blue green, rust color, gray brown and milky white. From the perspective of biology, “tender” means that the algae in the water is in growth, cells Not aging. “Cool” refers to the refreshing water quality, refers to there is no other suspended or suspension in water, and the transparency is greater than 20 cm ~ 25cm, and the oxygen in water is higher. Second, the parameters and effects associated with water quality and corresponding regulatory techniques 1. Water quality in good oxymetic first should first achieve the amount of dissolved oxygen in accordance with the cultured requirements. Under normal circumstances, in the breeding season, the water-dissolving oxygen per day must not be less than 3 mg / L at 5 mg / l. The oxygen in the water is an important factor affecting the growth rate of the aquaculture fish and the high bait coefficient. When the dissolved oxygen drops to 4 mg / liter, growing fish shrimpIt has an impact. Usually, the fish is dissolved in oxygen to 1 mg / L to start an oxygen-deficient float, while special aquatic products are usually starting in 2 mg / L. In high-density breeding mode, it is easy to cause a pool water hypoxia and heavy metal ions, ammonia nitrogen, hydrogen sulfide, methane, and other toxic substances in pool water. These toxic substances reach a certain amount, resulting in chronic poisoning of breeding, thereby low immunity, decreased feeding, decrease in physical fit, sometimes there is a disease. At the same time, the water quality is in a state in which the fish is inhibited the fish on the feed. Solubic oxygen management is considered to be a central part of cultured water management, and there are 8 species of specific measures: 1 appropriately expand the pond area, reaching 6670m2 (10 acres) acres, increase the wind, increase the oxygen; 2 pool water should not be too deep. Less than 3.0m, generally 1.5 ~ 2.5m should be suitable, prevent lower lack of hypoxia; 3 remove too much silt in the bottom of the pool. Keep the bottom of the bottom of the pool, the thickness of the pool, the water in water, the residual grass, the float, the exit and the dead fish, purify the water; 4 sunny day deep Tang Tang mud, resulting in pool water convection, accelerate the hydrogen consumption in the bottom mud Decompose, reduce its hydrogenation; 5 kill excessive floating creatures. The floating creature is killed by 0.3-0.5mg / l, blue algae, and phytoplankton kill 0.7 mg / L, copper sulfate; 6 administration of chemical oxygen, such as 500 ml / 667 m2, calcium oxide or peroxide 2-2.5kg / 667m2; 7 Adsorption of settlement organisms to kill bacteria and plankton, purify the water, increase the oxygen; the water purification effect produced by Changsha Terila Biotechnology Co., Ltd. is the best. 8 Scientific and reasonable use of oxygen control: I should master the principle of “four open three do not open”. 2. The pH is generally 7.5 to 8.5, namely: neutral or microbialism. The change in pH will directly affect the charge state of the colloidal substance in the water, affect the balance of ammonia and ammonia ions in water, resulting in adsorption and release of specific ions in water, affecting the effects of the pond and fish shrimp to humetidity Utilization. The water quality of the peracid will inhibit the nitrification process in the water, resulting in slowly decomposition, light and weakness of light, and slowness of breeding objects, weakening, and indigestion ability, non-love activities, and growth rates. The adjustment method of the pH is relatively simple. When pH 8.5 When the appropriate amount of gypsum, non-toxic acid (such as acetic acid), etc., and cultivate properly rich algae has a certain role. Generally, the pond is thoroughly cleaned with rawlf before stocking, improves the sludge ventilation, so that it is weakly alkali; breeding production period, every 10 days to 15 days, 367 square meters per 667 square meters, 25 kg ~ 30 kg, can keep the pond water quality It is weakly alkaline and has an organic matter precipitation. In the morning, the pH is decreased to 7 or less, and a raw lime water should be used to increase the pH, the quantity and method are the same as before. Salt-base pond, in the early morning, PH> 9 or more, must be filled with fresh water in time. Normally, the pH value cannot exceed 9.5. 3, the total pond is not more than 2 mg / liter, the nitrogen nitrogen is not more than 0.2 mg / liter; the total ammonia is controlled in 1 mg / liter, and the sub-sugar Nitrate nitrogen is controlled at 0.1 mg / liter below. Total ammonia and jam nitrogen are the decomposition of organics, the more water quality, the more organic matter in the water, the higher the total ammonia and the nitrid nitride. Total ammonia and nitrid nitrogen are toxic to aquatic animals, which affect growth, and severe survival. When total ammonia exceeds 0.5 mg / liter, the nitride nitrogen exceeds 0.1 mg / liter, indicating that water is contaminated with a large amount of organic matter. Delivery ponds often exceed this value in the summer and autumn season, usually total amino is 0.5 mg / liter ~ 4 mg / liter, the nitrate nitrogen is 0.1 mg / liter ~ 0.4 mg / liter. The following methods can generally be used: 1 aqueous plant nitrogen: freshwater water growing water. 2 Add new water. 3 rationally use the oxygen generator. 4 Microbiological preparations produced by Changsha Tayle Biotechnology Co., Ltd. can promote the decomposition of organic matter and have the effect of improving microecological balance of water. 5 Round: capture fish shrimp to the commodity specification, reduce the amount of water in the water body. 6 “Water with fish”, reduce the bait and herbity fish, add filter food, misco-food fish. 7 Winter Tang, Qingtang, clear too much silt. 8 laying a plastic diaphragm, blocking the release of harmful substances in the joint. 4, the salinity of the salt-base pond has a certain salt tolerance, such as the salt tolerance of the squid, the salinity of the fish is 5 ~ 6, the salinity of the fish is 8 ~ 10; the fish fish species The stage of salinity was 6 to 8, and the fish salinity was 10 to 12. The amount of salt contains is too high, which is unfavorable to many freshwater fish, and even endanger fish survival. However, the salinity is too high, affecting fish and bait bio growth. Therefore, the salt base pond should be 5 or less, preferably 3 or less. If the salinityExcessive, the following measures can be used: 1 often draw salty: the pond is strictly separated, introducing fresh water, discharging salt water. 2 Applicant Fertilizer: The organic fertilizer treated with Etiquette organic fertilizers is placed on the bottom of the pond, so that the water and salt base soil are basically isolated. 3 Recovery of hydrolyzate water quality and transformation into soil synchronous: while transforming the hydrochlorine hydrogence, planting the vegetative green alkali and alkali. 4 high water level pressure: should keep the water level in the pool than the outer river water level, prevent groundwater to penetrate into the pool. 5, the water temperature is mostly aquatic organism (except for aquatic mammal), it belongs to a temperature change animal, and their body temperature and water temperature are equal or similar, and the mildews are almost equal, and the temperature of the fish is gentle, and the water temperature is usually different from 0.5 ~ 1 ° C, carp. It was 1.7 ° C. my country’s pond is mainly cultivated fish, squid, grass fish, bluefly, squid, squid, squid, squid, etc., belong to warm water, fish, the adaptation of water temperature is 0.5 ~ 38 ° C, which is exceeded Can’t endure, and then cause death, these fish growth is 20 ~ 32 ° C, within this range, the increase in metabolism with temperature, increased seasoning, acceleration, water temperature 15 ° C, then appetite decreased Slow growth. Water temperature has an important impact on fresh water creatures. The water temperature can directly affect the metabolic intensity of the fish, which affects the feeding and growth of fish; water temperature affects fish’s sex gland development and initial spawning time; water temperature will have a greater impact on water dissolution, indirectly affect fish. In terms of the control of water temperature, it is generally to note: 1 Water storage pool should not grow tall trees, should not grow a plants and floating plants in the pool to avoid shading, affecting the increase in water temperature. 2 Warm resistance measures are taken to maintain water temperature. 3 Reference low water temperature streams, well water feeding warm water fish, can be warmed by extending processes and water storage times. 4 Conditional places can use hot spring water or plant temperature drain to increase the water temperature, or it can take the heating method.
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