Column cultivation is a kind of soilless cultivation, and it can also be said to be three-dimensional soilless cultivation. This kind of cultivation is to develop into space through the cylindrical cultivation erected around it without affecting the plane cultivation. The full use of greenhouse space and solar energy has opened up a broad prospect for agricultural development. Column-type soilless cultivation can increase land utilization rate by 3-5 times, increase production per unit area by 2-3 times, and also improve the utilization of greenhouse facilities. It is a resource-saving agriculture and factory-efficient agriculture. The column-type vegetable soilless cultivation facility consists of several parts, such as nutrient solution tank, plane cultivation bed, column cultivation pot, and liquid addition liquid return system, which are briefly described below. Nutrient tank The nutrient tank is a device for storing nutrient solution, generally a underground brick structure. Due to the large capacity of the nutrient solution tank, the temperature of the nutrient solution does not change much in all seasons. The volume of the nutrient tank should be designed according to the standard of 667 square meters of hydroponic area requiring 15-20 tons of water. The construction of the nutrient tank is a technically strong project. It is usually made of bricks and cement, or it can be made of reinforced concrete. In order to prevent the nutrient solution tank from leaking, water and water, it is necessary to add anti-seepage material and apply waterproof material to the inner wall of the liquid waste. In addition, in order to facilitate the cleaning of the liquid waste and to maintain a certain amount of water in the water pump, a 20 cm square small water tank should be arranged at the discharge pump of the liquid tank to facilitate the cleaning of the liquid tank. Flat cultivation bed The cultivation bed consists of two parts: the bed body and the planting board (also called the cultivation board). Bed body. The bed body is a device for holding nutrient solution and planting crops. Made of polystyrene material. Specifications are: 75 cm long, 96 cm wide and 17 cm high. The bed of the polystyrene material has the characteristics of light weight, easy movement, easy assembly, and the service life is up to 10 years. In order to prevent the nutrient solution from leaking and protecting the bed, a black film with a thickness of 0.15 mm and a width of 1.45 m is placed inside. The cultivation board is used to fix the roots of the crops, prevent light from entering and dust, prevent algae from being produced, and keep the temperature of the nutrient solution stable. The cultivation board is also made of polystyrene board, which is 89 cm long, 59 cm wide and 3 cm thick. The planting holes with a diameter of 3 cm are arranged on the top, and the hole spacing is 812 cm. It can also be used according to the needs of different crops, and the service life is also more than 10 years. The plane cultivation is used to circulate the drainage device and the nutrient solution. The flat cultivation bed liquid supply device is composed of a water pump and a liquid addition pipe and a liquid addition pipe made of iron or plastic. The plastic branch pipe has a small hole of 3 mm in diameter every 1.5 meters. The nutrient solution can flow from the small hole into the cultivation bed. The way of nutrient solution circulation is to first extract the nutrient solution from the liquid tank by the water pump, and enter the cultivation bed through the liquid addition main pipe and the liquid addition branch pipe to maintain the water level of 5-8 cm. The nutrient solution is higher than the liquid discharge port, and the liquid discharge port flows back to the nutrient solution tank through the drain groove to complete the plane circulation. Cultivating column The column is used to support and fix the carrier of the cultivation pot and the drip box, and the column makes the cultivation pile into a string and leads into the air. The column consists of two parts: a cement pier and an iron pipe. The concrete pier has a size of 15 cm square and a circular hole with a diameter of 30 mm and a depth of 10 cm. It is buried in the underground of the water tower bed to fix the column iron pipe. The pitch is 90 cm and the diameter of the iron pipe is 25-30 mm. It is about 2 meters long and can be made of thin-walled iron pipe or hard plastic pipe. The lower end of the tube is inserted into the hole of the cement pier. 1. Cultivation of the column. Cultivated alfalfa is a device for planting crops on a column. The shape of the cultivated clam is a hollow, six-petal plastic crucible. Its specifications are 20 cm high, 10 cm in diameter and 10 cm in pitch. The sputum is filled with granules (a type of rock wool). The granulated cotton is light in weight and has both water retention and water permeability. Six seedlings were planted at 6 petals. Place 8-9 cultivated plaque staggered petals on the column and string into a column. 2. Add liquid and liquid return system for column cultivation. The liquid adding system of the column cultivation is composed of a water pump, a liquid adding main pipe, a liquid adding branch pipe, and a dripping liquid box. The liquidation main pipe is a hard drip irrigation pipe with a diameter of 40 to 50 mm. The liquid addition branch pipe is a 16 mm diameter non-porous hard drip irrigation pipe. The drip gold is also a circular plastic box specially designed for the cultivation and liquid addition of the column. The two ends of the box have two hollow short handles for connecting the liquid branch pipe. There are six small holes around the bottom of the box to make the nutrient solution flow down. The bottom center of the drip box is fixed above the column. The nutrient solution is pumped out from the liquid tank by the water pump, and enters the drip box through the liquid-filling main pipe and the liquid-feeding branch pipe, flows into the cultivation pot from the drip box, and then flows into the second cultivation pot through the cultivation of the bottom hole of the crucible, and sequentially flows. Down to the bottom of a cultivation pupa, then flow into a flat hydroponic bed, and then flow back to the nutrient solution tank to complete a cycle. In order to achieve liquidation automation, the pump can be connected to a timer, and the timer is used to control the dosing time. Since the cultivation of the column is a new cultivation method, the history is not long, and the varieties of vegetables suitable for cultivation are being tested. At present, the varieties that have been successfully tested include small-leaf type leafy vegetables such as purple-backed sunflower, big-leaf stalk, erect lettuce, rapeseed, and clematis. Cucumbers and tomatoes of fruits and vegetables can grow up to 4 to 5 meters high, and it is not necessary to use column cultivation. Column-type soilless cultivation is not only suitable for large-scale production of high-tech parks, but also suitable for greening of family balconies, hotels, etc., which is pleasing to the eye. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone Manual Massage Foot Spa Massager A manual massage Foot Spa Massager is a device designed to provide a relaxing and therapeutic foot massage. 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