Sowing seedlings
1. Variety selection is not easy to conflate, more resistant varieties
2. Germination sowing 1 Sow date determination: Large, medium and small sheds are cultivated in the early January to mid-February with protective ground nursery; open field is broadcast live from the end of February to April. 2 germination sowing: after soaking in warm soup, sow germination at 15°C～20°C; select 6 pieces of fertile ground garden soil, add 4 pieces of rotten pig manure residue, sieving; apply 0.5 kg of calcium phosphate per square meter of bed soil, Ash 1.5 ~ 2.5 kg, 0.1 kg of ammonium sulfate, spread on seedbeds, about 12 cm thick; when playing sow foot water, and then spread the seeds evenly on the bed, cover soil thickness of 0.5 cm; to prevent seedlings tripping Disease, per square meter seedbed can be sprinkled with 10 grams of pentachloronitrobenzene, zinc and other equal amount mixture, mixed with 12.5 kg seedbed soil, 2/3 pad seed, 1/3 cover seed, after filming.
Seedling management
Low temperature at night can add a small arch shed insulation; 50% of the seedlings when the film is removed, spray 40% herbicide ether 160 ~ 200 times liquid, Miao Qi, during the day to open a small arch shed; temperature to remove small arch shed; seedlings remain moist, see Drying is watering; and time seedlings, weeding, the best transfer of seedlings 1 or 2 times; during the day when more than 20 °C timely release of air, keep at night 5 °C ~ 10 °C; pre-planting hardening seedlings, seedlings 60 days or so colonization.
Timely colonization
Choose soil with strong water retention and fertility, rich organic fertilizer, or loamy soil; planting when the temperature is stable above 7°C; cultivation of large, medium and small sheds stable in the shed above 0°C, ground temperature 10°C～15°C When planting a small shed in a greenhouse, it can be advanced about one week; soil preparation before planting, 5,000 kg of fertilizer per acre Shinong, 耙 fine flat floor, a width of 1 meter; choose the cold tail of the warm sunny morning planting, Celery pods were planted in 4 rows, with 30 cm spacing, single plants, 5-6 rows of this celery plant, 10-12 cm distance between holes, 4-5 plants per hole; watering while planting, planting can not be too deep, with soil It is advisable not to bury the heart and leaves.
Field management
In the initial stage of planting cultivation in open field, appropriate watering, cultivating soil moisture, raising the temperature of the soil; easing the seedlings and pouring the larvae after the easing; not sowing the seedlings; timely loosening the soil after irrigation; when the plants are 30 centimeters in length, the fertilizer and water attack, 25 kg of ammonium per acre or urea 15 About kilograms; irrigation immediately after topdressing, then not drought, every 3 to 5 days pouring a water, two times after the change to 2 days a water to keep the surface moist; can also be appropriate to recover 1 to 2 times the fertilizer
The initial cultivation period of facility cultivation should be sealed and kept at a temperature of about 25°C; when the heart leaves are green, the temperature should drop to about 20°C, and the temperature should exceed 25°C. When the temperature rises, the amount of air to be blown should be increased. Exhale from both sides; when the outside temperature is between 18°C ​​and 20°C, choose the windless sunny day to uncover all the membranes, open the air at night without cold waves, and after the frost period expires, remove the small sheds when the light is weak in the morning or evening on cloudy days; When the plants are 33 to 35 centimeters in size, the fertilizer is flushed with water; when the fertilizer is applied, the film is opened and the air is released. When the dew on the leaves is dispersed, 25 kg of ammonium sulphate is applied. After the fertilizer is applied, it is watered once and then poured once every 3 to 4 days to keep it moist. Until the harvest; do not apply diluted manure before harvest; boron deficiency, Mushi 0.5 ~ 0.75 kg of borax; 15 days before harvest with 30 ~ 50 mg / kg gibberellin foliar spray fertilizer 1 or 2 times.
Pest control
1 spot blotch spraying 70% mancozeb WP 500 times, or with potassium permanganate: mancozeb: water 1:1:800 times. 2 Leaf spot spraying with 75% chlorothalonil wettable powder 600 times, or 25% thioredoxfen 1000 times, or 80% thiram 400 times, or 1:0.5:200 Bordeaux + 0.1% sulfur powder. 3 virus disease spraying 20% ​​virus A500 times, or potassium permanganate 1000 times, or anti-toxin 700 times 2 or 3 times. 4 Sclerotinia is sprayed with 50% fasting WP 1200 times, or 70% thiophanate WP 600 times, or 40% sclerotate 1000 times. 5 soft rot spraying 72% 0 streptomycin sulfate soluble powder or neomycin-containing 3000 to 4000 times liquid, or 50% potassium copper WP wettable powder 500 to 600 times 2 or 3 times.
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