Variety selection: Choose varieties with shallow dormancy, large single fruit, strong fruiting capacity per plant, good fruit quality, suitable for sightseeing picking, and resistance to frost and disease in spring.
Formulated cultivation substrates The substrates with good application effect in the current production include peat, vermiculite, perlite, sand, sawdust, mushroom residue, straw, coconut bran and so on.
When planting plants, choose strong seedlings for planting. When planting strawberry seedlings, first position them according to the plant spacing, and then use a spatula to insert holes in the soil at the planting site. Soil compaction.
The Mulch Film is cut according to the size of the plastic bowl, and a corresponding mulch film is cut out and fixed on the plastic bowl with a clip. After clipping, dig a hole in the mulch to remove the strawberry seedlings from the hole.
Temperature and humidity management The temperature of the shed is controlled at 28 ℃ ～ 30 ℃ during the day. When it exceeds 30 ℃, it should be ventilated in time. The temperature at night is controlled at 12 ℃ ～ 15 ℃. Humidity is generally maintained at 40% to 50%, and cannot exceed 80%.
Water and fertilizer management In order to control humidity and reduce disease, water should be drip irrigation. In three-dimensional cultivation, the active area of ​​the plant root system is reduced. The number of top dressing should be appropriately increased, mainly liquid fertilizer.
Flowering management Flowering management can be combined with artificial pollination or bee release to improve fruit setting and reduce the occurrence of deformed fruit. The density of bees in a greenhouse is generally kept at a ratio of one bee to one strawberry.
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Venlo structure is a popular one at present. This architecture uses horizontal girder as main bearer, forming a stable structure with columns. There is consolidation between horizontal girder and column, and hinge is used to connect column and foundation.
In Venlo greenhouse, foundation is made of reinforced concrete and the side wall is made of brick or reinforced concrete plate. The steel frame always use hot dip galvanized light steel. Roof beam adopts horizontal girder structure and using herringbone connection. The horizontal girder bears 2 or more roofs, which is made of aluminum alloy. This material is used as roof structure material and also glass inlay material. Other beams using gutter style to minimize the section. Delighting material of the roof and side wall using the hollow double-layer or multilayer PC board.
PC board is mainly made of PC/PET/PMMA/PP materials, it need sun screen coating to resist ultraviolet resist and ageing, and it is also required to be anti condensation and antidrug.
As a kind of light material, use PC board can greatly reduce the weight of greenhouse structure, and corresponding reduced the size of the steel frame, which saving the cost of steel.
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