Special types of aquatic products such as crabs, turtles, cockroaches, etc., generally take 3 to 5 years to grow at natural temperatures, and the use of greenhouse constant-temperature culture can be marketed in just 10 months to a year and a half, significantly shortening the feeding period. To conduct constant-temperature greenhouse cultivation, a greenhouse with low investment, energy saving and practicality must be constructed.
1 Greenhouse Types Aquaculture greenhouses are divided into two types: indoor greenhouse cultivation and outdoor greenhouse cultivation. Most indoor greenhouses are mainly nursery and holding, and the greenhouse area is small. The outdoor greenhouse is mainly cultured, and the area is generally larger than the indoor greenhouse. It is a solar greenhouse that uses solar energy and heating.
2 Indoor Greenhouse Indoor Greenhouse is a simple house with good insulation properties, and then it is made of brick-walled hollow walls filled with thermal insulation material. The top can be covered with double layers of agricultural film. The front door is open, and the door should also be made of double-layer thermal insulation door. Fill the foam board, open a 10cm2 hole in the top of the door, insert double glass, in order to observe the breeding conditions and temperature changes in the greenhouse, install a ventilation fan on the top of the door for ventilation, adjust the air in the greenhouse. Install a 6cm long water pipe on one side of the corner to discharge waste water when changing water.
3 Outdoor greenhouses The outdoor greenhouses should be selected where they can shelter from the wind, have fresh air, and have convenient and clean water sources. They have built a rectangular-shaped east-west greenhouse with double slopes. In the north, a hollow wall with a thickness of 50cm and a height of 1.8m should be built, filled with insulation, and two gables should also be completed with a hollow wall to fill the insulation, open the east gable and open the ventilation fan. The scaffold is made of wood, bamboo poles and iron wire, and the double-layer non-leafing agricultural film is buckled, and then fixed with iron wire to prevent wind and rain. The grass cover is covered with 3 to 5 cm thick, and it is lifted from 8 am to 5 pm on sunny days. Make full use of solar energy, and sterilize the air and water in the greenhouse through the natural ultraviolet rays of the sun to keep the air fresh. When the pool is built, the membrane is placed on the ground, then a culture pond is built on the membrane, and cement stone is used as the bottom. This will easily increase the water temperature in the pool and save fuel. However, such ponds cannot be used for farming in the summer to avoid high temperatures. In order to make full use of the greenhouse space, breeding racks can be placed on both sides of the greenhouse for multi-layered aquaculture, with the middle as a walkway. There should be a backup water tank or reservoir in the greenhouse to prevent large temperature differences when changing the water. After the greenhouse is built, it must be disinfected and dealkalized before it can be cultured. In the greenhouse, one or two self-designed three-eye automatic thermostatic briquette coal stoves are installed. The 12 cm diameter iron chimney surrounds the room to warm up and discharge the gas to the outside of the greenhouse. The chimney is slightly higher than the top of the greenhouse. This furnace can add 12 to 32 pieces of coal at a time and burn for 5 to 8 days. If the greenhouse area is large, bricks can be used to form a “quadâ€-shaped flue on the ground and be heated by a dual-burning, self-contained, constant-temperature coal stove made of bricks.
Chongqing "Terson" Coptis", Department of Chongqing Shizhu Tujia Autonomous County specialty, China National Geographic Indications (native geographical products). Produced in Shizhu County Huangshui National Forest Park, also known as "Coptis". Ranunculaceae Coptis Coptis chinensis Franch dry rhizomes, medicinal products "taste even", Department of commonly used precious Chinese medicine, Shizhu County is the original production of Coptis, Coptis town, the production of Because of good quality, was identified as "Sinopharm" "Authentic Coptis".
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