How to water orchids in hot summer (middle)

How to water orchids in hot summer (middle)

1. Watering orchid plants should be based on natural factors, and different water management measures should be made according to various natural factors affecting transpiration of orchid plants, such as humidity, temperature, light, wind, season, weather and so on. First of all, it depends on humidity. If the humidity in the air is low and the transpiration is strong, it is necessary to water more; on the contrary, the humidity in the air is high or even saturated, and transpiration almost stops, so it is necessary to water less or even without watering. Secondly, it depends on the temperature. When the temperature is high, the transpiration is accelerated, the water demand is large, and the watering times are increased accordingly; on the contrary, at the bottom of the temperature, the activity of water molecules is slow, the diffusivity is weak, and the water demand is less. Third, it depends on the light. Strong light transpiration accelerates the diffusion of water molecules and requires more water; on the contrary, less water is needed, so the light is different, the shade is different, and the management of water is also different. Fourth, it depends on the wind. When the wind is strong, the water evaporates quickly; when the wind is weak, the water evaporates slowly; the dry southwest wind will enhance evaporation, on the contrary, the moist southeast wind will cause the transpiration to be relatively weakened; the orchid basin located at the tuyere will evaporate quickly by the wind, while the water from the leeward will evaporate slowly. Fifth, it depends on the season, the temperature, humidity and light are different in different seasons, and the transpiration of orchid plants is also very different. There is more watering in hot and dry summer; less or no watering in plum rainy season; no watering in cold and cold winter; less watering in early spring with lower temperature; more watering in late spring when the climate is mild; more watering in dry autumn. Sixth, depends on the weather, the natural weather is changeable, different weather light, temperature, humidity are different, the transpiration of orchid plants is also different. The basic practice is: more watering in sunny days, less watering in cloudy days, no more watering in rainy days, and no watering in rainy (snow) days. According to this, it is difficult to have an accurate and unified management method for watering orchid plants, and the so-called "watering every few days" is lack of scientific basis. Second, watering orchids should be watered according to the situation of orchids. The general principle is "do not dry, do not water, water thoroughly." However, in the daily management, the situation is complex and should be analyzed and treated according to the specific situation of orchids. First of all, according to the growing season of orchids. Orchids should be watered more in the growing or budding period, less or not in the dormant period, more watering in the germination period, less watering after germination, more watering when the flower bud appears, less watering during the flowering period to prolong the flowering period, stop watering for several days after the flower fade, let it dormancy and then water again. Secondly, according to the growth of orchids. The orchids with strong growth are watered more, those with poor growth are less watered, the diseased plants are not watered, the orchids that need to be rescued are watered less or less, and the plants in the pot are watered more and less. Thirdly, according to the moisturizing condition of the cultivation substrate. The water consumption of the matrix with fine particles and strong water retention is slow (such as mountain sawdust, etc.), so it is necessary to reduce the watering times; on the contrary, if the water retention capacity of the matrix with thicker particles is weak (such as fairy soil), it is necessary to increase the watering times. Fourth, it depends on the texture and size of the bowl. Tile pots with strong permeability should be watered more, purple sand pots and plastic pots with poor permeability should be watered less, small pots are easy to dry, large pots are difficult to dry, and the frequency of watering is also different. Generally speaking, watering orchids should be treated on a case-by-case basis and should not be simplified a thousand times. Third, the time to water the orchid plant is also scientific in terms of time. Generally speaking, watering in the morning is better. Generally speaking, when orchids are outdoors in late spring and summer and autumn, it is appropriate to water them in the morning: first, after cooling overnight, the temperature of the plant in the basin is lower in the morning, and watering will not hurt the seedlings at this time; second, it is watered thoroughly in the morning and turned moist in the evening, there is no waterlogging in the empty basin at night, and the air in the basin is ventilated, which is conducive to the breathing and circulation of orchid roots and the growth of orchids. Third, if the water is watered in the evening, the water evaporates slowly at night, which is easy to cause waterlogging, but when the transpiration is fast during the day, the basin has been moistened, resulting in the situation of "waterlogging in the basin when it needs to dry, and lack of water in the basin when it needs to be moistened"; fourth, the temperature of the orchid basin is still high in the evening, sudden cooling with cold water irrigation will affect root water absorption and interfere with physiological balance. Fifth, at the bottom of the temperature at night, the cell activity of the orchid strain is weak, and too much water will cause bacteria to multiply, and it will also breed snails and slugs. When orchids are indoors in winter and early spring, the watering time is postponed appropriately, and it is better to be watered at about 09:00 or noon after the temperature picks up in the morning. On the whole, the principle of watering orchids is that it is better to water orchids in the morning, earlier when the temperature is high, and later when the temperature is low.