Cucumber seedlings in the greenhouse can be planted to stimulate the roots to send more short roots.
Selected varieties such as Changchun Mizhi, Zhongnong 5, Jin Za 4th, Zaofeng, Xiangcuo 2 et al.
With cultivation soil, prepare non-meat roasted sunscreen soil, roast pig slurry, carbonized husk and appropriate amount of nitrogen fertilizer. With the proportion of seedbed 1/3 of the garden soil, 1/3 pig manure slag, 1/3 carbonized chaff, sub-beds for 2/4 garden soil, 1/4 pig manure residue, 1/4 carbonized chaff. Add 0.5 kg of urea per cubic meter of culture soil and mix well. In order to sterilize culture soil, use 40% formalin 200-300 ml (0.2-0.3 kg) to 25-30 kg of water, spray 1000 kg of culture soil, mix properly, cover with film for 5-7 days.
Seedling production Cucumber cultivation of special early-maturity seedlings, should use electric heating seedbed: seedbed power seedbed 80 watts per square meter, 60 watts per square meter seedbed; seedbed size of 10 meters 1 meter standard bed. Seeding bed selection DV20810 electric heating line model, seedling bed selected DV20608 type electric heating line model. Wiring spacing: 10 cm seedbed, 12.5 cm seedbed. Seedlings bed line: dig deep 5 to 6 cm (7 to 8 cm seedbed bed), laying on the insulation layer, according to the spacing between the small bamboo stick inserted in the seedbed at both ends, back and forth wiring. Then cover the territory, pull the sign, shop 2 cm thick with a good culture soil.
Timely planting sowing in mid-to-late January, 250 grams per acre need to be planted, every 10 meters 1 meter standard bed sowing 0.6 kilograms. Soaking before sowing disinfection, can be soaked in warm soup: After immersed in water at room temperature for 1 hour, dip in hot water at 55°C for 10 to 15 minutes, and continue immersing in warm water at 30°C for 2 to 3 hours. You can also use liquid soaking: After immersing in warm water for 2 to 3 hours, dip for 30 minutes with 1:100 formalin solution. Then rinse repeatedly with clean water. The germination was then warmed up to 28-30°C in the germination apparatus. When the individual seeds were sprouting and the white beak was about to be exposed, the temperature was adjusted to 1 to 2°C for 4 to 5 hours. Then gradually warmed to 28 ~ 30 °C, continue to germinate to 70% of the seeds when the seeds can be broken. When planting, pour enough bottom water, loosen the soil, evenly sow, cover the seeds with thin soil, press the seed water, and cover the arch shed.
Seedling management after seeding (sowing → sub-leaf micro exhibition) generally does not lift membrane ventilation, bed soil remains moist, bed temperature controlled at 23 ~ 25 °C; broken heart (cotyledon micro exhibition → first true leaf tip) daytime bed temperature Control at 16 ~ 18 °C, 12 ~ 14 °C at night; control the water; sunny weather as much as possible see the sun.
Proper planting and false planting are also referred to as sub-seedling. After about 10 days after sowing, the seedlings are planted when they reach the heart of the two cotyledons. Prosthetic density of 8 to 10 cm square, pretended to be in nutrition. Artificially conceived the wet seedbed; take seedlings and shoots, do not injure the tender stems; carefully protect the cotyledons; earthen the roots and neck; speed the root water.
Management of seedlings after the slow seedling period (separate seedlings → new roots) dwelling; bed temperature maintained at 18 °C ~ 20 °C; bed soil surface to maintain a moist state, but strictly avoid excessive humidity. The vigorous growth period (after slow seedling → before hardening seedlings) bed temperature dropped to 16 °C ~ 18 °C, no less than 12 °C at night. Under the premise of not being frozen, ventilate as much light as possible. Timely top-dressing and guaranteed moisture supply. After easing the seedlings and each fertilizer in the 3 to 4 leaf stage, urea can be used with a concentration of 0.1% to 0.2%. Water management keeps the soil surface semi-dry. Ethephon at a concentration of 150-200 mg/L was sprayed at the 2 to 4 leaf stage to increase the female flower rate (lower female flowering rate). When the topsoil is laid, loosen the soil. Four to five days before planting, measures such as gradual cooling, control of watering, and increased ventilation were adopted to consolidate the seedlings.
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