1. Advancing with the use of low-temperature-resistant plastic film to advance the shed, the soil in the shed can be defrosted as soon as possible.
2. After ditching and soiling, in the place where the planting is to be done, dig a trench of 20 to 30 centimeters wide, dig a layer of one layer, dig 20 to 30 centimeters deep, and soak in the sun; Shima excrement and restore the soil, increase the temperature.
3. Shallow colonization, watering planting muddy water, so that the seedlings and the ground level or slightly higher than the ground, to prevent the planting too deep; after pouring water, prevent flooding.
4. Open the side ditch, after the deep loose soil is planted, open the ditch in the soil 5 cm away from the seedling mites (in the higher ground temperature, this can be used for fertilization), and deep sloping soil between the rows to facilitate the increase Wen Baoji promotes mild seedlings.
5. Multi-layer coverage According to observations, a small arch shed in a plastic greenhouse can increase the temperature within the small arch shed by 2° C. to 4° C. and increase the ground temperature by 1° C. to 2° C. In plastic sheds, two-layer curtains are made of plastic films. Covering at night, the air temperature and ground temperature in the shed can be increased by an average of 1°C to 2°C. A layer of grasshoppers of 1 meter in height can be covered around the greenhouse to increase the temperature of the shed by 1°C to 2°C.
Hot-dip galvanization is a form of galvanization. It is the process of coating iron and steel with zinc, which alloys with the surface of the base metal when immersing the metal in a bath of molten zinc at a temperature of around 840 °F (449 °C). When exposed to the atmosphere, the pure zinc (Zn) reacts with oxygen (O2) to form zinc oxide (ZnO), which further reacts with carbon dioxide (CO2) to form zinc carbonate (ZnCO3), a usually dull grey, fairly strong material that protects the steel underneath from further corrosion in many circumstances. Galvanized steel is widely used in applications where corrosion resistance is needed without the cost of stainless steel, and is considered superior in terms of cost and life-cycle.
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