If the shrimp is over-fed during the shrimp aquaculture process, the hepatopancreas burden of the shrimp will be aggravated. The main manifestation of the hepatopancreas is the heavy burden of hepatopancreas caused by overeating, resulting in compensatory swelling and reddening, and even causing damage to liver function. At the same time, too much leftover material will mold and spoil at the bottom of the water, which will deteriorate the sediment quality in advance. Therefore suitable control material is very important. Then when should we control the material? How to control materials in a timely manner? (i) Routine Control: Normally, it is necessary to stop one or two meals for every five to ten days of feeding. On the one hand is to reduce the digestive system load, so that shrimp feeding algae, bacteria, biological flocks and other trace elements to promote absorption; on the one hand is the clear water transfer, reduce pollution. (b) Shell clam control material: When shrimps are clam shelled (until the crust is hardened), they will not only eat but also consume large amounts of oxygen. Natural food consumption will be reduced. The number of clam shells is generally reduced by 3 to 70%. If the stimulating oyster husk is to be stopped, one meal to two meals must be observed. (3) Water control materials: poor water quality, excessive hydration, unbalanced algae, dark water, oil film foam, muddy bottom, inverted algae and water, and disinfection of products using live water, fungicides, etc. (Reducing 3-5 percent, reducing weight without reducing meals). (D) change the bottom control material: the bottom of the odor fever, wind tail odor, pool bubble and just use the bottom of the water purification products, etc. need to reduce the material (minus 3-5 into, reduce the weight of meals). (5) Weather control materials: Turning low pressure, sunny showers, warming and cooling all must be appropriately reduced (half the amount, stop for one meal or one day). (6) Solar control materials: Not only the first one and the fifteenth vicinity should control materials, but some special solar terms should also pay attention to appropriate material reduction. See what are the precautions for the lunar solar terms? (7) Fishing control materials: Before harvesting, proper control of the materials is required, and corn can be used instead of 3-5% of the feed. (8) Incident control materials: if the disease is found to be reduced by more than 50%. What are the precautions for the lunar solar term? Shrimp farming is easier to manage according to the lunar calendar. Therefore, it is very important to understand the effects of lunar solar terms on aquaculture: (a) Spring: (1) The beginning of spring: Dongfeng warmer, it is necessary to pay attention to the greenhouse temperature of the greenhouse cultivation suddenly rose, pay attention to the prevention and control of bacterial infection, algae, pan bottom and so on. (2) Rainwater: The amount of rainfall increases gradually. Before the rain, the temperature rises after a cold rain. Pay attention to calcium supplementation and anti-stress. (3) Convulsions: The temperature rises and bacteria begin to recover in large numbers. Attention should be paid to changing the end of disinfection. (4) Vernal equinox: When the weather is fine on sunny days, the air pollution becomes large and the stress is severe when the air is warm. (5) Ching Ming: Continuously rainy, it is necessary to pay attention to the maintenance of algae and anti-stress. (6) Gu Yu: The temperature rises at the end of the cold wave. Pay attention to the balance between bacteria and algae and liver protection. (b) Summer: (1) The beginning of summer: Tiangan warming up, pay attention to nutrient feeding, can obtain faster growth rate. (2) Small full: The weather is getting hotter, and the hot and humid weather in summer is approaching. Should be based on bacteria, diligently change the bottom, protect the liver and stomach, conditioning a healthy body, to meet the arrival of stress weather. (3) Mans species: As the temperature rises and rainfall increases, especially the coming of the plum season in the Yangtze River Delta. The main prevention is the deterioration of sediment, algae aging and algal phase transformation. (4) Summer solstice: When sultry comes, no matter whether the water temperature or the bottom mud temperature is rising slowly, it is easy to breed pathogenic bacteria. Therefore, special attention should be paid to changing the oxygen at the end and disinfecting the disease. (5) Xiaoshu: The hot weather, the end of the Meizi period in the Yangtze River Delta, and the increase in tropical cyclones, pay attention to disease prevention and stress resistance. (6) The Department of Public Health: At the hottest times, droughts and floods are frequent, and attention should be paid to water conservation and stress prevention and prevention of hypoxia. (c) Fall: (1) Liqiu: The summer heat is cool, and from time to time there is a fog that affects the dissolved oxygen and algae growth. The algae, water, pan bottom, and stratification are all common. (2) Treating heat: The hot weather gradually ends and attention is paid to the algae and the lack of oxygen at the bottom. (3) White Dew: The weather turns cold, and the temperature difference between day and night starts to increase and nutrition is added. (4) Equinox: The increase in cold rain increases the water temperature. Pay attention to the death of algae at the bottom and control the material appropriately. (5) Cold dew: The temperature of the water will drop below 20°C. Prepare a winter shed. (6) Frostfall: Open-air breeding should pay attention to antifreeze, but winter sheds should pay attention to ventilation and heat dissipation during the day. (d) Winter: (1) The beginning of winter: In the winter, open-air cultivation enters the equivalent cutting stage; the southern winter shed should be supplemented with nutrients to maintain the stomach and the stomach. (2) Light Snow: Frequent cold air, open ponds in the south must be sold for sale. (3) Heavy snow: often continuous and sunny, but the temperature is still falling. It is prone to dense fog in the shed, attention to oxygen and change the bottom. (4) The winter solstice: When winter is approaching, we must pay attention to antifreeze. (5) Osamu: The coming of winter, pay attention to reduce protein feeding, and increase the nutrition of minerals, multidimensional, polysaccharide and other immune nutrition. (6) Big cold: At the coldest time, strong winds often occur, and the winter shed must pay attention to wind damage. China Extract Powder For Use As Dietary Supplement Extract Powder, Extract Powder Manufacturer Shaanxi Kang New Pharmaceutical co., Ltd. , https://www.bio-pharmacies.com