Using winter greenhouses to cultivate winter leeks, the Spring Festival can be listed, the harvest period of up to 4-5 months, mu yield up to 3,000 kg. Specific cultivation techniques are as follows: I. Selection of fine varieties used for good palatability, high yield, strong resistance, and cold-resistant color pods, such as Dahongpao with red leaves and full leaf red. Second, the fertilization site selection flat terrain, fertile land, drainage and irrigation convenient, less weeds of the plot, in early November deep plowing 15-20 cm, combined with deep plowing per acre Shi quality decomposed organic fertilizer 3000 kg, 25 kg of ammonium phosphate as base fertilizer. Then make a 1-1.2-meter-wide flat file, and make the surface smooth and thin. Third, timely sowing can be sown in mid-late and late November. Put enough water before sowing, mix the seeds with proper amount of fine sand and spread it on the surface of the pods, use the foot to cover the surface or cover with a layer of dirt, and cover the mulch. Then a small shed of 70-80 cm high was erected with a bamboo strip 2 meters long and covered with a film. Fourth, to strengthen management on the basis of pouring enough water, watering before emergence, 5-7 days to emerge. After the cotyledon was unearthed, the mulching film was removed for the first time weeding the seedlings. When the two true leaves are grown, the third time weeding the seedlings, and chasing the first fertilizer, pouring the first water, generally topdressing NPK fertilizer 10 kg. After 15 days, combined with the second fertilizer applied watering, Mushi compound fertilizer 5 kg. After harvesting once, the top dressing is watered once, and 5-10 kg of fertilizer per mu or 1,000 kg of thin human livestock waste fertilizer is applied. At the end of March next year, when the temperature rises, small arch shelters can be removed, ventilation can be enhanced, and high-temperature seedlings can be prevented and leek white rust can be prevented. V. timely harvest leek grow to 4-6 leaves, plant height 10-15 cm when the large seedlings can be listed, while replanting leek, so that the harvest can be received in batches in early June clear loquat. Pay attention to the fact that every time you close your income, you need to keep a balance between the big and the small, and keep the seedlings even to increase your output.

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