A probe into the empty Root of Orchid

Raising orchids and raising roots first is a word often mentioned by orchids. The internal structure of Langen is a typical Monocotyledon type. The cortical cells are more developed and there are symbiotic root fungi. The cross-section structure can be divided into outer layer, middle layer and inner layer. The outermost layer is the root integument tissue, whose function is to protect the cortex, absorb water, and reduce and protect the loss of water within the cortex. The middle layer of Langen is cortical tissue, the cells are more developed, the main function is to store water and nutrients, "digest" symbiotic bacteria. The inner layer of the root is the central column, and its cross section can be subdivided into xylem, phloem and the surrounding fibrous tissue into a column and a pith composed of thin film cells in the center. the water and nutrients absorbed by the root are transported upward by the vascular bundle of the central column. When a novice raises an orchid, he often raises the orchid to death. After pouring the pot, he often finds that the orchid root is ten rotten and nine empty. The veteran who has raised the orchid for many years cannot completely put an end to the situation of the empty root and rotten root in practice. Sometimes even if the orchid is very well raised, when it is turned over, it is possible to find the empty root. It can be said that how to avoid rotten and empty roots is a problem that orchid farmers have to face. So what is the reason for the rotten empty root? Our forefathers have discussed this issue for a long time. As the ancient saying goes, "if a root does not touch the ground, its root must be empty." roughly understood, it seems that Langen did not have sufficient contact with the plant material, and that failure to absorb water is the chief culprit of the empty root. This view has a far-reaching impact and has been shared by many Orchid people in ancient and modern times. But is this really the case? I'm afraid not! Orchid friends who have experienced turning pots all know that rotten roots and empty roots are not necessarily in insufficient contact with the plant material; intact roots are not necessarily in full contact with the plant material, and even the suspended roots completely exposed to the basin soil are very healthy. So, what is the main reason for rotten and empty roots? The answer is simple, microbes. If there are no microbes, no matter what happens to Langen, it will become a section of "Langen stem" at most, and it will never become rotten and empty roots. This is a truth that every modern person knows. Was the ancients wrong? Not necessarily! We know that the ancients raised orchids often used mud with strong water absorption and moisture retention, and relatively impermeable mud. if the mud does not come into contact with Langen, voids will be formed around Langen, and such a "hole" provides a good breeding environment for harmful microorganisms. although the ancients did not have the concept of microorganisms, they wisely discovered a microbial breeding environment that was easy to form empty roots, that is, "roots can not reach the soil". It seems that people misunderstand and misinterpret the meaning of the ancients. After talking for a long time, how to avoid rotten and empty roots? You might as well learn the method of the ancients, that is, to "draw money from the bottom" and not to provide opportunities for harmful microorganisms. specifically, you can do the following: first, you must look at the roots when introducing varieties, and try not to do seedlings with bad roots. Second, select permeable, moisturizing and ventilated plant materials to create a pot environment suitable for the healthy growth of orchid root. Third, pour the basin and turn the basin gently, and pay attention to killing the pests in the plant material. Beware of sudden cold and heat of the temperature and extreme cold or high temperature to avoid the physical damage of Langen. Fourth, pay attention to the sterilization of plant materials and basin utensils. Fifth, do not apply thick fertilizer to produce fertilizer.