Jujube trees are not unfamiliar to everyone. Fresh and dried fruits are one of the most important seasonal fruits. Jujube is rich in vitamin C and vitamin P. In addition to serving fresh food, it can often be made into candied and preserved fruits such as candied dates, red dates, smoked dates, black dates, wine dates, and jujubes. Jujube vinegar, etc., are raw materials for the food industry. greenhouse
How to manage the temperature of jujube trees in the greenhouse? What is the principle of planting jujube trees in a greenhouse? What should be paid attention to when cultivating jujube trees in a greenhouse? The following land resources network will give a detailed introduction for the reference of netizens.
Requirements for temperature and humidity of jujube trees in different growth periods:
1. Before the jujube sprouts, the temperature during the day is 15~18℃, the temperature at night is 7~8℃, and the humidity is 70~80%.
2. After the jujube germinates, the temperature during the day is 17~22℃, the temperature at night is 10~13℃, and the humidity is 50~60%.
3. During the period of jujube extraction, the temperature during the day is 18~25℃, the temperature at night is 10~15℃, and the humidity is 50~60%.
4. In the early days of jujube, the temperature during the day is 20~26℃, the temperature at night is 12~16℃, and the humidity is 70~85%.
5. During the full blooming period of the jujube, the temperature during the day is 22~35℃, the temperature at night is 15~18℃, and the humidity is 70~85℃.
6. During the fruit development period of jujube trees, the daytime temperature is 25~30℃, and the humidity is 60%.
Planting jujube trees in greenhouses generally uses artificial low temperature and dark light to promote dormancy, which is a low temperature treatment method that allows jujube trees to quickly pass dormancy. Cover the shed with film and straw curtains from late October to early November to prevent the shed from seeing light during the day, reduce the temperature in the shed, open the vents at night, and create a low temperature environment of 0~7.2℃ as much as possible, about 1 month to 1 month The cold demand of jujube trees can be met within a month and a half.
After the jujube trees are released from dormancy, apply 4000~5000 kg of organic fertilizer per mu, cover the whole shed with black plastic film according to the production requirements, and cover the shed from the end of December to the beginning of January. And then pull 1/2 of the straw curtain, 10 days later, all the straw curtains will be opened, and the temperature will be gradually increased.
When the temperature outside the shed is close to or higher than the temperature during the growth period of the jujube in the shed, the film can be gradually uncovered to adapt to the external environment.
Post time: Apr-07-2021