When you are carrying a basket and want to buy some delicious shiitake mushrooms and fungus from the market, when you think of rumors such as “Mushrooms are Bleached,†“Mushrooms Are Stained,†and “Can Accumulate Heavy Metals,†are you just stopping? As a consumer, how can you easily identify and select edible mushrooms?
When purchasing edible fungi, in addition to checking the name, site, net content of the packaging, production date, shelf life, product standard number, quality level, etc., it can also be performed through “seeing, smelling, and pinchingâ€. Quality judgment.
Fresh products: The appearance should be fresh and dry, and the cap or stipe should be clean and white hairs (mycelium sprouting from the body) should be visible. There is a unique fragrance of edible fungi, and there are no odors such as acid, sputum, and mildew. If you want to squeeze your body without water, if the water shows it is a bubble, you cannot use it.
China's edible fungus products are mainly black fungus, mushrooms, white fungus and so on. Black fungus should be dark brown, shiny and neat. There is no boxing ear sticking to each other. Mushrooms should be rounded and handles short. Tremella ear should be loose, yellowish color, no black spots or impurities.
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.greenhousehydroponic.com