Activization of flight activity of bees. Cloudy days during the zimne-spring and autumn periods when tsvetki plants allocate not enough nectar, beer families long do not come to an active condition. For activization of summer of bees feed up a syrup, infused on tsvetkah a cucumber, or a syrup with addition of several drops strong razdrazhitelja (mint, an anise, etc.). A feeding trough with a syrup establish in the remote end of a hothouse. A syrup pour in the small portions (100-200 daily early in the morning.

Letno-opylitelnaja activity of bees in hothouses quite often decreases at low light exposure and presence of smells of pesticides. For increase of efficiency of pollination of plants of the closed ground it is necessary to watch that light exposure did not fall below 5000 lux and that there was no smell of pesticides.

In hotbeds and film shelters in the spring when the temperature of air does not exceed 15°С and a frame or a film lift only on the one hand on small height (5-10 sm), bees fly to a hothouse reluctantly. They do not find a way to tsvetkam a cucumber through narrow cracks which are formed at a raising of frames or films. To direct bees to hotbeds and film shelters, them collect about beehives on a feeding trough or malomyodnuju a framework which put about an open southern end face of a hotbed or film shelter. When bees will take away all forage, they will start to visit tsvetki. It is enough For normal pollination of cucumbers, that each flower in the first day of flowering was visited by 8-10 bees. Bees are occupied by nectar and pollen gathering in a hothouse only in first half of day, by 13-14 ch their years stops.

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