Our climatic conditions do not always contribute to flower growers and vegetable growers. To grow vegetables and flowers during the year, you must have a greenhouse where the corresponding temperature and light regimes are maintained.
Before the construction of the greenhouse, the owner must decide why he will use it: for the early -nesting firing of greenery, growing seedlings of early cucumbers, tomatoes and other thermophilic crops or to obtain products for a whole year. After that, the required area of protected soil is calculated on the basis of the accepted seedlings for each plant, the density of landing and, possibly, the expected harvest with 1 m2. In the conditions of greenhouses, the plants are protected from environmental pollution, cold, prolonged acid rains and hail, strong winds, etc.P. In addition, the efficiency of the use of mineral fertilizers and pesticides increases, in open ground they are often washed off with rains, decreases the soil drying out, as well as the probability of surface crust formation, which is the arm of oxygen to the root system.
Depending on the purpose of the greenhouse, it is built: without heating, with temporary heating (early spring and in the second half of autumn, in conditions of frost and low temperatures), with constant heating throughout the winter period. If Sitting is planned at the beginning of March, and the harvest is at the end of November, then temporary heating for the greenhouse is required. As temporary heating devices, military stoves, stationary fireplaces and powerful electric heaters with fans are more often used, because neither glass nor the film will protect the plants from protracted frosts (-2 ° C).
High prices for energy carriers should be taken into account, so it is important to correctly choose both the technology of cultivation (when planting plants, the terms of production), and the heating and lighting modes of the greenhouse.
Stationary heating is arranged in a greenhouse if it is planned to create a winter garden, greenhouses or production of vegetable products throughout the year. It is advisable to use water heating by placing a heating boiler in an apartment or a brick extension to a greenhouse.