Types of small greenhouses

(1) Plastic shed. Under the condition of narrow courtyard, a plastic shed with a length of about 15 meters and a width of about 4 meters can be built in front of the bungalow to the south. The production method is: use bamboo pieces about 1 cm thick and 4 cm wide, insert them into bamboo bows 50 cm apart, and the top is tightly covered with plastic film. It shall be exposed to sunlight during the day, and the humidity can reach about 25 ℃. At night, it shall be covered with paper for thermal insulation (waste cement bags or kraft paper shall be used for the upper and lower sides, and 7 layers of waste newspapers shall be added in the middle). The bamboo pieces at the lower end shall be bound firmly with pull ropes to prevent them from being blown over by strong winds. This plastic shed does not add a fire, and the temperature can generally be maintained at no less than 0 ℃. It can store flowers and trees with a minimum temperature of no less than 0 ℃ in winter, such as rose, pomegranate, fig, oleander, kumquat, peony, osmanthus, etc. If it is necessary to place flowers that like medium temperature, a honeycomb briquette furnace with chimney can be installed from late October to early April of the next year, and the temperature can be maintained at no less than 10 ℃

(2) Semi underground simple greenhouse. Choose the place with the wind facing the sun in the courtyard to make a small greenhouse with a width of 3-4 meters, a length of about 7 meters and a height of 0.6 meters. Specific method: first dig a ditch 50 cm deep on both sides, and then dig a ladder sill from both sides to the center according to the size of the flowerpot. The lowest place is the walkway. Put up a herringbone frame on the upper part, 60 cm above the ground. The roof is divided into inner and outer layers, with a distance of about 15 cm-20 cm. Each layer is stretched with a layer of plastic film, which is tightly sealed and compacted with soil to avoid being blown away by the wind. Open a small door on the east side. If the temperature is too high, open a seam for ventilation and heat dissipation. This kind of small greenhouse can be kept above 5 ℃ in winter. Generally suitable for moderate temperature flowers, such as Michelia, jasmine, gardenia, Fusang, Yingchun, plum blossom, green peach, etc. can spend the winter safely here. In some cold areas in winter, it is necessary to cover a layer of paper for thermal insulation or install a coal briquette furnace with chimney around three or nine days

(3) Plastic shed. In front of the window of the South bungalow or building balcony, use bamboo bow to tie it into a plastic shed (the bamboo bow is built on the balcony, and the lower end can be put on the lower part of the balcony turnstile). At night, the paper is covered for thermal insulation, and the temperature can be maintained at about 3 ℃ - 5 ℃

(4) A small greenhouse in front of the indoor window. A rectangular wooden frame with a length of about 140 cm, a width of 30 cm and a height of 65 cm is nailed with wooden strips and other objects, and the outer surface is tightly wrapped with plastic film. Install the small greenhouse frame in front of the window, and the base is flush with the top of the heating. After putting it into the flowerpot, clamp the door curtain with a clothes clip

The following points should be paid attention to in the maintenance of flowers in small greenhouse

① The water used for watering flowers in small greenhouses in winter must be warm water stored indoors for one day and night. It is forbidden to water flowers with cold water

② Often wash the dirt or soil outside the plastic film with clean water to facilitate the daylighting of flowers

③ Often sprinkle some water on the ground to increase the air humidity

④ Due to the high humidity in the room, the watering times should be properly controlled. See dry and wet when watering, and it is better to be slightly dry