Efficient cultivation techniques of fresh Corn in greenhouse

In the later stage of spring production, the vegetable plant in the warm winter greenhouse aged, the yield and quality decreased, the market price was low, and the planting benefit decreased. At this time, transplanting fresh corn in the winter greenhouse can make rational use of the greenhouse resources and obtain higher economic benefits. First, select excellent varieties: select high-quality fresh corn varieties according to local conditions, such as Zhongnuo No. 1, Suyunuo No. 1, Iris No. 1 and so on. Second, raising seedlings: sowing in late February, raising seedlings in a bowl, first sprouting on the sand base, and then sowing after seed germination, one grain per bowl, and then covering the soil 3 cm thick after sowing. After sowing, the bowl body is placed in the gap in the greenhouse, and the greenhouse can continue to produce vegetables. Keep the temperature in the greenhouse no more than 30 ℃ during the day and no less than 6 ℃ at night, release air and refine the seedlings before transplanting. Third, soil preparation and ridging: when the corn grows to 6 ~ 7 leaves in mid-April, pull out the vegetables in the shed. Ridges are formed after turning the soil, with a ridge distance of 0.5 meters. At the same time, 45000 kg of farm manure and 225kg compound fertilizer were applied per hectare, and the land was flattened with plastic film and compacted. Fourth, transplanting: dig a nest to plant seedlings according to the plant spacing of 30 cm, water the seedlings first and then seal the soil. The seedlings should be selected when transplanting, and the seedlings with the same size, strong growth and well-developed roots should be selected for transplanting, and the seedlings should be watered once on the second day after transplanting to prevent the seedlings from dehydration. Fifth, reasonable close planting: in order to make each plant of corn grow a good commercial ear, planting should not be too dense, with 54000 plants per hectare. Sixth, management: the greenhouse to prevent high-temperature burning seedlings, when the temperature in the shed reached more than 35 ℃, the need for air cooling, to the middle of growth can be removed. 7. Harvest: when the female ear of fresh corn can be picked and put on the market 20 ~ 25 days after silking, the fresh ear is in the milk mature stage and the taste is moderate. Generally, it can be put on the market in the middle of June, about a month earlier than open field cultivation, and has higher commodity value.