Astragalus simple storage technology
Venlo structure is a popular one at present. This architecture uses horizontal girder as main bearer, forming a stable structure with columns. There is consolidation between horizontal girder and column, and hinge is used to connect column and foundation. Pc Board Venlo Greenhouse,Venlo Greenhouse,Venlo Type Pc Sheet Greenhouse JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , http://www.spgreenhouse.com
First, water tanks can be stored for up to 4-7 months. The stocking method is as follows: Astragalus membranaceus is washed by malachite green for 3 hours, or immersed in 5% saline solution for 5 minutes, and placed in a cleaned water tank. About 10-20 kg can be placed per cubic meter of water. Generally change the water once a day or every other day. Turn the jaundice below the tank 3-4 times a day. It's best to put 10-15 tail rakes in each tank to prevent jaundice from intertwining. In order to improve the body composition of squid, 100 grams of soybean can be fed for every 15 kilograms of scutellaria, and some peppers can be fed at the same time to stimulate jaundice and improve the survival rate of squid. Stamped wire screen cover to prevent escape.
Second, the earthen pond storage method can be excavated in a hard place to build pool, the area can be large or small, about 70-80 cm deep. The pool wall is solidly beaten with triad earth, and it is about 40 meters high with bricks at the periphery of the pool, and is installed into and out of the wall of the outlet in order to replace the pool water. The depth of the pool is about 30-40 cm, and white or water hyacinths are planted in the pool. In general, 8-10 kg of Astragalus can be placed per square meter. During the stocking process, pay attention to changing the fresh water, and feed the appropriate amount of feed on time, and at the same time do a good job in disease prevention and treatment.
Third, cement pool storage method Concrete pool is generally 20-40 square meters is appropriate, pool depth 1.2-1.5 meters. The wall of the pool should be smooth. Walls should be covered with horizontal tiles to make the top of the wall “T†shaped. The wall of the pool should be 30-40 cm higher than the ground. Place about 20 cm thick soil on the bottom of the pool, and the water depth should be about 15-30. Centimeter, while at the same time to plant a little water white lotus in the pool. Generally about 20-50 kilograms of Astragalus can be stocked per square meter. During the stocking process, the water is changed once every 2-3 days, and the amount of water exchanged is one-third of the total amount. At the same time, it is necessary to sterilize commonly used drugs, spray four ten-thousandths of concentration of saline, 30-45ppm quicklime, or bleach, erythromycin and so on. Find the condition should be treated promptly. Every day, regular and quantitative feeding of live animals and fresh feed, such as cockroaches, yellow mealworms, fly maggots, rice bran, bran, leaves, etc., must be performed.
In Venlo Greenhouse, foundation is made of reinforced concrete and the side wall is made of brick or reinforced concrete plate. The steel frame always use hot dip galvanized light steel. Roof beam adopts horizontal girder structure and using herringbone connection. The horizontal girder bears 2 or more roofs, which is made of aluminum alloy. This material is used as roof structure material and also glass inlay material. Other beams using gutter style to minimize the section. Delighting material of the roof and side wall using the hollow double-layer or multilayer PC board.
PC board is mainly made of PC/PET/PMMA/PP materials, it need sun screen coating to resist ultraviolet resist and ageing, and it is also required to be anti condensation and antidrug.
As a kind of light material, use PC board can greatly reduce the weight of greenhouse structure, and corresponding reduced the size of the steel frame, which saving the cost of steel.