The prosperous period of orchids in July needs special care.

July, although it is a high temperature period, but orchids have ushered in a prosperous period. Orchids in the flourishing long term, from the leaf bud exhibition until the autumn cool or early winter temperature began to drop. Management of this period is critical and requires "special" care.

1. Ensure proper temperature for growth

Temperature is one of the important conditions for orchid growth. The optimum temperature for its growth is 20~30℃, and its vigorous growth period is 25~30℃. In some areas in late spring and early summer, the natural temperature has not yet reached 25℃, often around 20℃. If it is cloudy and rainy days, less than 20℃, orchid plant (bud) development is very slow, some leaves bud after exposure, has not been elongated, leaf exhibition.

At this time, if artificial regulation is not carried out, it will not only be difficult to have a season of autumn buds, but even a season of new plants will not be fully mature. This has a great influence on the flowering of the year and the germination and development of strong buds in the following year. Therefore, heat preservation to promote growth, has a very important significance.

The so-called heat preservation means that when the natural temperature does not reach 25℃ or more, the shed will continue to be closed. When the temperature of the shed reaches 25-28℃ about 3 hours after the sun rises, the doors and windows will be opened in batches for ventilation. If the temperature drops below 25℃, continue to close the doors and windows or close the doors and windows in the direction of the wind to ensure that the temperature of the shed is not lower than 25℃. Temperatures exceeding 32℃ must be cooled in time.

2. Strive for enough scattered light

Everything grows by the sun. If it is cloudy and sunny, the light is not strong, sometimes not, should adjust the shade density at any time. Morning light before 9 a.m. and red, yellow and orange light after 5 p.m., there is shade sunset, not only harmless but also beneficial, is the most conducive to the absorption and utilization of light, should reduce or remove the shade net, let it shower light. If it is rainy weather, we should use high-pressure mercury lamps, fluorescent lamps and incandescent lamps coated with red and orange as much as possible to make up for more than half a day in the morning.

Ensure proper air humidity

Orchids suitable for growth of air humidity should be about 80%, Cymbidium and orchids should be higher. If conditions permit automatic spraying, appropriate spraying procedures should be programmed and input to the controller according to the humidity of the greenhouse. Without automatic spraying conditions, should be in the blue field channel, blue frame under the shop sand or brick, drenching moisture plus artificial spray mist to increase humidity.

4. Timely watering and fertilization

Orchids cultivated in soil are based on the principle of "rather dry than too wet, soilless rather wet than dry for too long". Granular soil and stone plant material mixed cultivation, although not as high humidity as soilless cultivation, but also can not dry too long, can only be slightly later than soilless cultivation 1-2 days of watering. Orchid flourishing long-term watering, more importantly, according to their own cultivation conditions and substrate humidity and determine the watering interval time. No matter what specific circumstances, pure soilless culture, more than less watering is better.

To flourish long-term orchids fertilization, to follow the general principles and rules of fertilization, to apply "fertilizer" mainly, it is generally recommended to use orchids dedicated organic liquid fertilizer, nitrogen, phosphorus and potassium are relatively rich, once a week, diluted 500 times watering roots, the next day after watering fertilizer, should be watered to wash the dirt in the basin.

5. Proper ventilation

The orchid breeding place is moderately ventilated, which can not only keep the air fresh and adjust the humidity in the shed, but also supplement natural carbon dioxide gas fertilizer and effectively cool down. Early summer if continue to promote long insulation, especially should pay attention to timely ventilation. Generally, there is sunshine in summer and autumn, from 10:00 a.m. to 18:00 p.m., more ventilation is required. If the temperature is still at 25℃ in the middle of the night, it should also be ventilated more. At the same time, it is necessary to block the attack of strong winds and typhoons in time.