A: The time for the application of the autumn fertilizer is generally after the kiwi fruit is harvested. Before the tree leaves, the time should not be too late. At this stage, the fertilizer is mainly applied with organic fertilizer. It can be said that most or all of the organic fertilizer can be placed in this year. Stage application. In the process of applying the base fertilizer, a small amount of triamine compound fertilizer can be applied to the mature kiwifruit garden, and the tillage is carried out after fertilization, but it should be noted that the tillage should not be too deep, otherwise it is easy to damage the root. After the fertilization of the young garden, it is necessary to pay attention to the deep expansion of the soil.
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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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JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , https://www.skyplantgreenhouse.com