Orchids should not be over-ventilated.

A lot of orchid friends through the online query orchid first essential point_--ventilation, carefully read a lot of articles are discussing orchid ventilation, how to strengthen orchid ventilation, ventilation can reduce diseases and so on, many new orchid friends through their own understanding and breeding environment as far as possible ventilation and care, etc., so that their orchid leaves are good, flowers are many, seedlings are strong, roots are vigorous, disease free, etc.; However, Lanyou through a period of observation, to meet the above requirements did not meet the expected effect or a far cry. The main problems are as follows: poor selection of plant materials, soft and hard ratio and water retention, poor planting disinfection, disinfection, lighting or too strong, temperature, humidity, ventilation and poor lighting, etc.

The author through 5 years of orchid culture observation summary, and Lanyou exchanges, exchanges, learning found that temperature, humidity, ventilation has the following relationship: high temperature, ventilation when humidity is low (orchid room), vice versa, this paper mainly discusses the bad effects of ventilation on orchids, as follows:

1. Ventilation is too large for the tip of the orchid leaf: Orchid needs humidity of 50-80%(a say in 40-80%) between, in general, orchid planting environment (small environment) humidity is higher than the outside humidity, air convection increases, increases the moisture loss in the air of the small environment, humidity decreases quickly, in general, the temperature of the orchid room is higher and lower, the air humidity above will be smaller, the humidity of the leaf tip of the orchid is small, resulting in local water loss, plus the orchid leaf tip respiration is strong, long-term leaf tip water shortage Jiaojian.

2. Mechanical damage of orchid leaves due to excessive ventilation: there is a poem saying "spring breeze in February is like scissors", which shows that the orchid leaves shake violently, the orchid leaves rub against each other, the orchid leaves collide with equipment, the stem bones of orchid leaves break, etc. After the orchid leaves receive mechanical damage, bacteria and germs in the air can easily enter the orchid body, causing the growth of bacteria and bacteria in orchid leaves. Through the reverse transmission of orchid leaves, the whole orchid carries germs and bacteria. Over time, the quantitative change reaches qualitative change. Orchid leaves are damaged, black spots and broken when it is light, and soft rot and stem rot when it is heavy. (This paragraph does not agree, February spring wind like scissors means not like this, spring wind is too easy to cause orchid leaves to coke tip, bud bud dry, and ventilation caused by two rot is a fallacy, I have been raising orchids for many years, have not seen the wind blowing a lot of grass rotten)

3, ventilation is too easy to empty roots: Orchid leaves lose water, roots and bulbs water transport upward, plant materials dry faster than normal, plus plant materials and pot walls are relatively thicker than the capillary in the middle of the plant materials or ventilation capacity is strong, the environment and the pot water exchange faster, the above two points lead to plant materials from wet to wet, from wet to dry state needs a short time, according to the previous watering method, the plant materials around the pot wall have long been dry, roots and plant materials reverse osmosis, if the time is longer, serious water loss at the roots leads to orchid roots dry death, The last empty root. (Ventilation and watering are like a couple. Either party is too strong to quarrel. They are not harmonious. I have said in the post before that a well-ventilated environment can be watered more. The empty roots are because the small environment around the roots is not suitable. Both dry and wet will have empty roots. There is no direct relationship with ventilation. The closed environment is not watered for 1 month.)

4, ventilation is too easy to lead to fertilizer damage: under normal circumstances, fertilization, plant material from wet to dry time is long, orchids through a long time of absorption and digestion, plant material fertility decline. However, if the plant material dries too fast and the orchid absorption consumption is not urgent, the fertilizer ratio of the plant material increases with the decrease of water concentration, exceeding the tolerance range of the orchid, resulting in fertilizer damage, and finally black root, root rot and other diseases.(With the third point, the root cause of fertilizer damage is the inorganic salt content of the plant material and the concentration of topdressing in the later stage, and there is no direct relationship with ventilation. As for the orchids, it is even more imaginative to say that they are too late to consume. For example, if a pot of grass is damaged, it can take 10 minutes. Overweight fertilizer is poured down. After 10 minutes, the water is late. The absorption capacity of the roots of orchids is super strong, and the real fertilizer damage is reflected. It takes half a year to several years. I have also said before that orchids are plants with high tolerance.)

In short, orchid ventilation to moderate appropriate, through the cultivation of orchids for a few years, to determine the appropriate performance of orchid ventilation: orchid leaves gently shake, do not collide with other orchid leaves. It is believed that Lan You is easy to master through observation. Because my family raises orchid time to be short, plant orchid technology to need to improve, the above viewpoint is my experience, add talent to learn shallow, improper place exists certainly, hope broad orchid friend gives censure, the author is grateful!