Seeding period appropriate spring radish should strictly control the sowing period. Greenhouse cultivation can generally be planted from late January to mid-February and harvested from early April. Covered with mulching film, it can be planted from mid-March to early April and harvested from late May to early June. Small sheds and mulching cultivation, sowing time can be advanced to mid-March.
The sowing method is to sow 1 to 2 seeds per hole, and prepare the seedlings with nutrients to prepare for the deficiency. Per acre sowing rate of 100 to 200 grams. After sowing, cover 0.5 cm with fine soil, then cover the film to keep moist and promote seed germination.
The varieties of spring radish that are suitable for cultivation at present are preferably white spring, white spring, spring radish 9646 and big root of Changchun.
Soil preparation is done by selecting sandy soil or sandy land, planting 2 to 3 times deep before sowing, and the depth of ploughing shall be no less than 20 cm. When the last time it is turned to the ground, 3,000 kg of organic fertilizer will be applied to Mushi and 30 kg of ternary compound fertilizer. . Generally, 1 meter for the ditch is used for the ditch, in which the width of the mound is 0.65 m and the surface of the mound is formed into a turtle shape; the ditch is 0.35 m in width; a 30 cm deep ditch is digging for every 30 m long and the ditch is 60 deep. ~ 70cm, Sangou high standard facilities to prevent waterlogging in the field.
Field management generally can be seeded 4 to 5 days after sowing, seedlings should be broken in time after the broken film induced seedlings; the first 10 days timely check seedlings fill seedlings; 2 to 3 true leaf time seedlings; "big break belly" when the Dingmiao. About 20 days after sowing, the radish began to break white. At this time, the mud was pressed against the film break to prevent the film from being lifted.
The optimum growth temperature of spring radish is above 12 degrees Celsius, and the temperature is too low to be easily vernalized by low temperature. In the pre-growth stage, insulation is the main factor, and the temperature in the shed is appropriately increased. When cold air is encountered, it must be covered with cold-proof materials. In the late growth period, the temperature rises, and ventilation should be conducted to cool down. During the day, it should be kept at 20-25 degrees Celsius and the night temperature should be around 15 degrees Celsius. The small-shed film and greenhouse film can be gradually removed depending on the weather. Generally, the film can be removed after mid-April. Irrigation should be carried out at noon on sunny days, and irrigation should be done in half ditch, drained 2 hours after irrigation. 30 days after sowing, topdressing for the first time, about 45 days for the second top dressing, 25 kg of compound fertilizer for the mu, and 0.5% of the liquid fertilizer for root filling (when soil moisture is high, it can be applied at a distance of 10 cm from the radish root). .
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