1 Construction of greenhouses Greenhouses suitable for planting peaches, apricots and vegetables are all suitable for cultivation of greenhouses. They can be erected and used. Newly built greenhouses can be constructed in the east-west direction, with a length of 60 meters, a width of 8 to 10 meters from north to south, and a cement block or brick structure on the rear wall. , thickness of about 1 meter, the height of the shed body 2.50 ~ 3 meters is appropriate. 2 The species selection should choose tree dwarfing, early fruiting, fruit shape, high yield and high quality varieties, such as morning and evening honey, jujube fresh, big guajuza, dabailing, jumbo candied fruit, Jinsixin 4 and july cakes Other varieties are suitable for greenhouse cultivation. 3 After planting seedlings, they can be planted and excavated. Before planting, the planting trench is to be excavated. The groove width is 60 cm, and the ditch depth is 60 cm. The straw is covered with wheat straw and rice straw, and organic fertilizer is applied. The soil is evenly mixed and filled into the ditch. Choose roots with a thickness of 1 cm or more, complete roots with good quality seedlings, set at 50-60 centimeters, dry the following branches and leave 2 to 3 buds short, then ridge, ridge width 1 meter, ridge height 20 In centimeters, the jujube seedlings were planted on ridges with a spacing of 1 meter, spacing of 2 meters, and 333 mu. 4 The seedlings planted in the shed are naturally dormant for about one to two months in the shed. The end of December to early January are the time to apply the base fertilizer, irrigating the water, covering the entire shed and covering the black mulch, and then pressing the shed. 5 The temperature control buckle time after the baiting is generally at the end of December, and about 20 to 30 days after the shed is closed. The method of picking and covering the grass at night is mainly to create a low-temperature environment, break the dormancy, and begin to heat up in late January. One-third grass curtains were opened during the day and then 1/2 straw curtains were pulled. After 10 days, the grass curtains were all pulled open, and the temperature was gradually increased. The temperature before germination was controlled at 15 to 18°C, and 7 to 8°C at night, after germination. The temperature is controlled at 17～22°C and nighttime at 10～13°C. The temperature during the shoot leafing period is controlled at 18～25°C, nighttime is 10～15°C, the early flowering period is 20～26°C, nighttime is 12～16°C, and flowering period is 22～ 30 °C, 15 ~ 18 °C at night, fruit development period 25 ~ 30 °C, after gradually uncovering the film, suitable for the external environment. 6 Suitable tree shape and trim Since the frontier of the greenhouse is relatively low, low-drying plexiform or happy-shape can be adopted, and the back porch of the greenhouse is relatively high. The free-spindle or sparse-layer can be used. The pruning is mainly based on summer pruning, which is mainly to pick up the heart of the jujube head, remove the back branch and cut off the dense plant. Winter shears are mainly short cuts on the development branches, cut fine and overlapping branches, retract the resulting branches and trunk branches, and update the result branches to ensure the compactness of the tree. China Agricultural Network Editor
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