Productivity depends on the provision of appropriate factors for each culture: it is an optimal temperature regime, concentration of carbon dioxide, high -quality substrates and their provision of nutrition elements, soil disinfection, observance of crops, planting material and optimal plant lighting mode. Anyone who raised tomatoes, cucumbers and other vegetable crops on the windowsill in winter, made sure that without additional lighting of the crop, one could not wait. The same situation is in the greenhouse. Little daylight hours in the winter and cloudy weather significantly weaken the growth strength and worsen the conditions of plant development.
Fruit cultures are most demanding on light – representatives of the family of pumpkin, nightshade, legumes; Less demanding plants are those that are grown to obtain vegetative organs – cabbage, root -free and deciduous vegetable crops.
The most economical and effective lamps of daily lighting are, they are stirred on the ceiling and on the sides of the greenhouse. In order to save electricity and improve soil lighting, the lamps are equipped with a device for descent and lifting as plants grow.
In the greenhouse, in the presence of heating and additional artificial lighting, you can grow cucumbers, tomatoes during the autumn-winter-spring period, and grow seedlings of different crops between them. As experience shows, it is advisable to grow vegetables in two stages: in autumn-winter, due to insufficiency of light, it is easier to grow tomatoes, and in winter-spring if sunlight increases-cucumbers.
