First, nursery mode According to the mode of “focusing on seedlings, unified management of special personnelâ€, the standard of Miao Qi, Miao Zhuang, and cultivation of non-toxic and strong seedlings will be achieved. Second, the selection of nursery sites Choose open and flat terrain, shelter from the wind, get close to clean water, convenient transportation, low groundwater level, and avoid close to the village, around the rubbish, toxic liquid and air pollution. Third, nursery operation steps 1, shed disinfection: Use 24% poison eliminate, 40% yubao or 5% bleach, 25% enemy kill, kung fu and other inside and outside the shed to disinfect, kill insects. 2, the pool membrane: the bottom of the pool to lay a layer of woven bags or plastic waste cloth, and then spread into the pool membrane. 3. Water injection: The pool is filled with clean, non-polluting water. The depth of the water accounts for two-thirds of the depth of the pool. Disperse 10-20 g of bleaching powder per cubic meter evenly in water. 4. Determination of the sowing date: According to the variety and the production season of Daejeon, the sowing date is correspondingly accurate (the summer cabbage is sown in early June). 5, loading plate: Select a smooth place to lay a piece of plastic film, after the matrix is ​​poured out, check the substrate moisture content, adjust the matrix moisture to squeeze into a group, let loose that is appropriate, water content is not enough spray water mix Wetted can be placed in the tray (in the hole of the sterile floating plate). The principle of plate loading is that the elasticity should be moderate, and the substrate should be filled with holes, followed by scraping with a small wooden board. 6ã€Pressure hole sowing: Press the hole board to press out the sowing pit, the pit is 0.8-1cm deep, the seeds are sown in the small hole pressed by the pressure hole board, and sown by hand, each hole presses 2-1-1. -2 seed sowing, sow the seeds after sowing, then sprinkle the trace matrix and gently scrape the seeds with a scraper. 7, put the plate into the pool: the seedlings sowed the same day the disk is floated, the seeds are sown, arranged in sequence in the disinfection of nursery ponds, and then metallurgy Meng zinc 1500-1600 times evenly sprayed on the disk surface Disinfect the disc surface and cover the sterile woven bag to splash the seeds with waterproof drops. Fourth, nursery shed management 1, the temperature and humidity control: from the two cotyledons to two leaves after the heart, open the shade nets at different times, open the side window, sooner or later open the shade net, noon shade net off. 2, light control: sowing to two leaves, tender young seedlings, to prevent strong light burning seedlings, strong light intensity at noon, the sunshade net down coverage, morning and afternoon when the light is not strong, open the shade net, let the seedlings accept certain The sun shines, making the seedlings grow robustly, reducing the occurrence of tender seedlings and diseases. After two leaves, the time for covering the shade nets was gradually reduced. When the seedlings were grown to five true leaves, the shade nets were all removed so that the seedlings could fully receive the light, promote photosynthesis and enhance the resistance of the seedlings. 3ã€Seedlings, Miao Miao, Dingmiao: In Tengchong, the germination of celery takes 10 days, and the emergence takes 12 days. The seedlings grow to two true leaves (about 21 days after sowing). Superfluous seedlings, spiral root seedlings and weak seedlings must be pulled out in time. , with the strong seedlings pulled out, transplanted in the hole without seedlings to improve the rate of seedlings. Strictly sterilize the operation, use poisonous elimination around the seedlings site to sterilize, and use the seedling tools (cut the chopsticks to sharpen the tips) to disinfect with the Yubao. After seedlings and seedlings, all disks were spray-sterilized with Jinlei Duomier. 4, water management: If the pool leakage, pay attention to pay, make up fat. 5. Top dressing: About 30 days after sowing, 0.6 kg of nutrient liquid fertilizer is applied per cubic meter of water. When fertilizing, remove the seedling tray from the pond in 2 rows, place a proper amount of nutrient liquid fertilizer solution in a water dipper, and stir it evenly in the pool. Slide the 2 rows of seedling trays in sequence and empty the water surface to add the nutrient solution. The pool fertilization is completed and the removed trays are returned to the pool. 6, pest control: every 3-4 days with Jin Lei Duomi + streptomycin mixed spray farm, if there is insect pests, use the Gongfu to kill the insects on the disk to prevent vegetable damage to the seedlings. 7, hardening seedlings: The purpose of the hardening seedlings is to enhance the resistance of the seedlings and improve the survival rate of transplanting in the field. 5-7 days before transplanting, the shed film can be removed and only the insect nets can be kept for hardening. 8. Transplanting in a timely manner: Normal seedlings can be transplanted into the field after being grown to 5-6 leaves (about 40 days).
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