Cultivation of Dragon Fruit in Northern Greenhouse

Dragon fruit has a wide range of adaptability, easy to plant and manage, low input, high yield, and can be put into production in the second year after planting, and it is easy to cultivate and manage. It is a fruit tree variety with broad promotion prospects in northern facilities cultivation. The northern region can be planted in ordinary solar greenhouses or in multi-span greenhouses. The cultivation technique points:

Settling time in greenhouses is preferably from April to May each year. Pitaya is planted with a cement column at a 23-meter hole spacing and each cement column is planted in four directions. According to the width of the shed, you can walk along the shed to plant 3-4 rows.

Hi hot dragon fruit, low fear of its optimum growth temperature is 25 ~ 35 ℃. For older mature branches, concentrated high intensity sunlight, if too long, the accumulated temperature can not be distributed, could lead to the emergence of part burns.

Insufficient moisture or lack of water shoots grow slowly, branches are not strong, and flowering results are delayed. Fertilizer organic fertilizer should, together with a small amount of fertilizer, fertilizer may be selected from nitrogen, phosphorus, potassium NPK, Watering week (if arid watered twice a week), once a month fertilizer topdressing 250 g / post.

In order to improve fruit set, greenhouse cultivation either type of white meat or red meat types are generally required artificial pollination with finger picks pollen on the stigma can be put on. It is also possible to apply 100-200 ppm gibberellin to the base of the flowers when the flowers are completely open, resulting in a higher fruit setting rate.

The length of the fruit of dragon fruit is generally greater than 1.5 meters, and it is in the period of reproductive growth from April to November. The middle and upper branches and pendent branches are the easiest results. Generally, 5 branches are cultured per plant. Each batch will have 3 or so branches and the remaining 2 will serve as non-fixed vegetative branches. After the end of the season, all old branches that have had fruitful results should be cut off.

Dragon fruit is a kind of fruit tree that does not require pest control and no insecticide is sprayed from flowering to fruit ripening.

City Agricultural Technology Promotion Station Feed

Urban Agriculture New Variety Series

Since the Beijing Agricultural Technology Promotion Center took the lead in introducing southern fruit and vegetable varieties, papaya, in 1999, it has introduced nearly 20 kinds of southern fruits. After preliminary screening, more than 10 varieties are suitable for planting in northern greenhouses. When these varieties were cultivated in the same year, when they bloomed, there was income in that year. It not only broke the traditional cropping pattern of the fruits in the suburbs of Beijing, but also filled the gap in northern winter fruit picking. It is a rare planting species for the development of urban agriculture in the suburbs of Beijing. This edition will introduce 10 mature varieties of planting technology in phases.

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