Many new orchid breeders query orchid culture skills on the Internet and find that the first key to orchid cultivation is ventilation. So flower friends know that orchid ventilation is also important? Do you know what the strong wind will do to orchids? Pro, let's read and learn together!
The main points of orchid ventilation: 1 Excessive ventilation: the humidity required for orchid is 50-80% (say 40-80%). In general, the humidity in the orchid planting environment (small environment) is higher than the external humidity, and the air convection increases, which increases the water loss in the air of the small environment, and the humidity decreases quickly. Generally, the temperature of the orchid room is higher and lower, and the air humidity above is smaller. The low humidity of the leaf tip of the orchid leaves leads to local parts In addition to the strong respiration of orchid leaf tip, the leaf tip is short of water for a long time.
2、 Mechanical damage of orchid leaves after ventilation: there is a poem saying that "the spring wind in February is like scissors". It can be seen that the leaves shake violently, the leaves rub against each other, the leaves collide with the equipment, and the stems and bones of the leaves are broken. After the mechanical damage to the leaves, the bacteria and bacteria in the air can easily enter the orchid body, causing the growth bacteria and bacteria of the orchid leaves, and then through the reverse transportation of the orchid leaves, the whole orchid leaves will be adjusted Strains of orchids carry pathogens and bacteria, which accumulate over time, and the quantitative change reaches qualitative change. The orchid leaves are damaged, black spots and broken, while the heavy ones are soft rot and stem rot. (some senior flower friends don't agree with this passage. It doesn't mean that the spring breeze in February is like scissors. Too much wind in spring can easily cause the leaves of orchids to be scorched and the buds of new buds to dry up. It is even more fallacious that ventilation causes two kinds of rot. Huayou has been raising orchids for many years, but he has not seen the grass rotten by the strong wind.)
The influence of strong wind on Orchid
3、 If the ventilation is too large, it is easy to empty the root: the leaves of orchid lose water, the water of root and bulb is transported upward, the plant material is dried faster than the normal condition, and the plant material and basin wall are relatively thicker than the capillary tube in the middle of the plant material or the ventilation capacity is strong, and the water exchange between the environment and the basin is fast. The above two points lead to the short time required for the plant material from wet to moist and from wet to dry, so it needs short time to put the plant in the pot according to the previous watering method The plant material around the wall has already dried out, and the root and the plant material reverse osmosis. If the time is longer, the root will lose water seriously, which will cause the orchid root to dry and finally empty. (ventilation and watering are like a couple. If either side is too strong, they will quarrel and be disharmonious. As I said in my post before, watering is enough in a well ventilated environment. Empty roots are because the small environment around the roots is not suitable. Large dry and wet will empty roots, and there is no direct relationship with ventilation. If you don't water in a closed environment for one month, the root will be empty.)
4. Excessive ventilation is easy to lead to fertilizer damage: under normal conditions, the time from moistening to drying of the plant material is long, and the fertility of the planting material is decreased through long-term absorption and digestion of orchid. However, if the plants dry too fast and the orchid is not in a hurry to absorb and consume, the fertilizer proportion of the plant species increases with the decrease of water content, which exceeds the tolerance range of the orchid, leading to fertilizer damage, and finally black root and root rot disease (with the third point, the root cause of fertilizer damage is the inorganic salt content of the plant material and the thickness of topdressing at the later stage, which has no direct relationship with ventilation. As for the consumption of orchid, it is even worse It's a wild imagination. For example, if you damage a pot of grass, you can pour it down in 10 minutes. After 10 minutes, the return water is late. The absorption capacity of orchid root is very strong, and the real fertilizer damage will take half a year to several years. As Huayou said before, orchid is a plant with high tolerance.)
The influence of strong wind on Orchid
Editor's note: in a word, orchid ventilation should be moderate, judging the appropriate performance of orchid ventilation: the orchid leaf gently shakes, does not collide with other orchid leaves. I believe Lanyou is easy to master through observation.