The regulation of water quality in greenhouses is an important factor in the entire culture process. The quality of water quality regulation can directly affect the growth, yield, quality, and breeding efficiency of juveniles. The water quality of greenhouses is different from that of Waitang. There are unfavorable factors such as lack of sunlight, small water bodies, and unstable water quality. First, the basic requirements and principles of juvenile greenhouse culture water quality 1. Requirements for physical and chemical indicators: water source is non-pollution, suitable for brown coffee or reddish-brown: PH7.08.0, nitrite below 0.15mg/L, ammonia nitrogen below 5mg/L, hydrogen sulfide below 0.5mg/L, dissolved Oxygen 3 5mg/L. 2, small fat and thin principle: 3 months below the juvenile pool water quality as fat as possible, 3 months after the juvenile pool as thin as possible. Practical experience has proven that 1/5 of the pool is clear. Adjustment of water body fat can be adjusted by fertilizer or water purification measures. At present, the commonly used Chinese medicinal Gallnut 20-30ppm, after boiling decanter to achieve fertilizer or water fertilizer products to fertilizer: water quality improver or change the water to achieve the purpose of water purification. 3, disinfection: regular and irregular two methods. Generally, young nurses within 3 months are disinfected once a month; after 3 months, nursery ponds are disinfected 2-3 times per month; and according to each tank body, the time and number of disinfections can be appropriately adjusted. Disinfectants mainly use povidone-iodine, concentrated glutaraldehyde, quicklime, and chlorine preparations. It is best to use them interchangeably. In addition, appropriate disinfectants should be selected according to the specific conditions of the water body. Second, the physical and chemical indicators of water control 1. The PH value of the juvenile aquaculture water suitable for the regulation of the pH value of 7.0-8.0, PH value is too high will increase the toxicity of ammonia nitrogen, PH is low, the quail is not busy eating, resulting in high bait coefficient, serious can cause poisoning, The appearance of skin diseases has a great impact on culture. The solution to the low PH value is to use lime or baking soda. When the PH value is lower than 7.0, use quicklime 30-40ppm, or use baking soda 100-150ppm; when the PH value is high, generally increase oxygen , Appropriate to change the water or spill the PH regulator to deal with. 2. The control of ammonia nitrogen can be eliminated by controlling the feeding of feeds, splashing ammonia nitrogen preparations and oxygenating agents or changing water. 3. The regulation of nitrite by degradation of nitrite should be considered in conjunction with the conditions of eating and drinking of the earthworm, the pH of the water body, and dissolved oxygen. At present, there are many methods for degrading nitrite. Farmers should adopt appropriate and reasonable methods according to their own water conditions. Usually, the jujube pool below three months can be reduced to increase oxygen and spill immune polysaccharides and vitamin C. 2 times; three months later, the jug pool can be splashed with soda or splashed with microbiological preparations, which can be splashed 1-2 times depending on the actual situation. 4. Control of dissolved oxygen The control of oxygen in the larval pool is very stressful. High dissolved oxygen can cause juvenile bubble disease. The juvenile pudding density is about 30/m2 with an aerator of 1.1 kW, usually Oxygen is increased by 1-6 hours per day in January and February. Oxygen is increased by 6-12 hours per day in the first 3 to 4 months, and oxygen is increased by 12 to 18 hours per day in the 5th to 6th month. Oxygenation is started throughout the day after 6 months. During the cultivation process, oxygenation agent can be used to adjust, and the regulation of dissolved oxygen should be controlled according to the actual situation, and the oxygenation time should be controlled for flexibility. Third, the role of microorganisms The use of beneficial microorganisms in water can accelerate the conversion of ammonia nitrogen into nitrate, and nitrates are effectively used by plankton to effectively improve water quality and sediment quality. At the same time, due to high doses, beneficial bacteria are in the water for a short period of time. The formation of dominant populations within it inhibits the reproduction of other pathogenic microorganisms, and the secondary sources of infection can be controlled at lower levels, thereby indirectly controlling the occurrence and development of infectious diseases of ticks. The use of microbial agents cannot be used in conjunction with disinfectants and antibacterials. 5 days after the general drug use, the efficacy disappears, and then 0.5 kg of brown sugar is added during use. After the aeration, dump it in a corner of the pool for 24 hours. According to different uses, different types of microbial preparations should be used. If it is necessary to reduce the ammonia, nitrite, hydrogen sulfide, and other harmful substances in the water, microbial preparations with water purification, such as nitrifying bacteria and photosynthetic bacteria, should be used to promote algae. For reproduction, microbiological preparations with a role of water, such as Bacillus, yeast, and lactic acid bacteria, should be used. For the inhibition of harmful bacteria, microbial preparations containing Streptococcus and lactic acid bacteria should be used. At present, the use of microbial preparations in greenhouses is not yet widely used. The main reason is that some strains cannot form dominant species in greenhouse waters; however, for the regulation of greenhouse water quality, the use of microbial agents is a major development direction. Face Mask Machine,Pm2.5 Mask Machine,Filter Mask Machine,Filter Cotton Making Machine Dongguan Huitong Automatic Machinery Technology Co., Ltd , https://www.medicalmaskmachines.com