Core Tip: Floating seedlings, also known as floating seedlings, float the foam plugs filled with lightweight seedling substrate on the surface of the water. Seeds are sown in the substrate. Seedlings grow rooted in the seedling substrate and can be absorbed from the substrate and the water bed. Water and nutrients for raising seedlings. Compared with the traditional method of raising seedlings, this technology has the advantages of reducing transplanting labor, saving land for raising seedlings, facilitating seedling management, cultivating strong seedlings, and increasing the rate of seedling establishment. It is commonly used for green leafy vegetables with a short growing period. Build nursery ponds. In the shed, we should choose to be sunny in leeward, requiring no pollution, convenient water source, etc. The specification of the floating pool is 6.7 meters in length, about 1 meter in width, 0.2 meters in depth, and 30 breeding trays. The pool pods are made of wide and narrow rakes, which can be made of red bricks, hollow bricks, and adobes, and are evenly filled with sand and fine soil. After the water-filling and disinfecting floating pools are established, 200 times bleaching solution or 0.1% potassium permanganate solution is used to sterilize the surrounding area and the floating pool. The next day, check whether the water level has dropped, and find that the leakage of nursery ponds should be promptly repaired. The bottom of the ordinary floating seedling pool should be covered with black film, and the film should be prevented from being scratched or later worn. When fertilizing, according to the nutrient solution formula, dissolve the fertilizer and then mix it in the floating pool. Note that the fertilizer can not be directly applied to the floating plate to avoid burning the seedlings. Floater selection and disinfection. Polystyrene plastic foam floats were selected. The first time the floats were used without germs, there was no need to disinfect before use. Before the second use, must be soaked with 0.1% potassium permanganate or 1:100 bleach solution, after the film is dried. Matrix preparation and disinfection. The best combination of 2 peat soils and 1 part of perlite is to use carbendazim, root rot and other agents before the use of the matrix, and 65% mancozeb WP. After mixing the medicine and soil, cover the membrane for 2 to 3 days or spray the substrate with 0.5% of formaldehyde to prevent damping-off and Sclerotinia. Matrix plate. The plate should be full and uniform, otherwise it will affect the normal growth of the root system. The specific method is to spread the matrix covering all the holes and tap the side of the plate 3 times by hand, then spread the matrix, and scrape off excess matrix on the disk by hand. Be careful not to compact the matrix with your fingers or sticks, do not dry, do not make holes. Punch sowing. The depth of the hole is determined according to the seeds to be sowed, then the seeds are sown, and the seeds are placed in the hole in the center of the float plate, one per hole, and the substrate is covered with the substrate and the plate is flush with the surface. , In order to avoid the water disperse the impact of seedlings, and covered with non-woven fabrics, sprinkle with a sprayer with the right amount of water. Post-broadcast management. The first is temperature management. Before emergence and the small cross period, when the greenhouse temperature is higher than 38 °C, the small shed to take two ventilation, greenhouses need to open the doors and windows ventilation and cooling, the temperature dropped in time to close the shed, close the doors and windows insulation. The second is to check seedlings, fill seedlings, and seedlings. When 80% of the seedlings entered the small cross period, the seedlings were used to make up the seedlings, except for the large seedlings, the seedlings were small, the medium seedlings were kept, and 1 seedling was left per hole, and the seedlings at the lack of seedlings were supplemented with excess seedlings. Hot Plate Welding Machine,Hot Plate Plastic Welding Equipment,Servo Hot Plate Welding Machine,Hot Plate Welder For Oil Tank Wuxi DIZO Ultrasonic Technology Company , https://www.dizosonic.com