Chinese chestnut king orchid special plant Orchidaceae general mixed type

Carry forward the national orchid culture and spread the knowledge of orchids

The traditional cultivation of orchids has always been the art of promoting the growth of orchids by optimizing the growth environment of symbiotic bacteria. As long as we can create an environment conducive to the growth of orchid flora and inhibit the growth of harmful bacteria, orchids can grow well, and the growth environment of wild orchids provides us with an optimized model for the growth of orchids, with 4 jin in small bags of about 11.2 liters of 49.8 yuan and 8 jin in large bags of about 22.4 liters of 99.6 yuan. Free delivery, today's order will send carbendazim and rooting powder, buy more and get more!

Many orchids have dug orchids or picked orchids in the mountains, and you will find that lush orchids grow in mountain forests with thick substrates, loose pines, fertile pine trees and chestnut trees.

So what is this matrix?

This layer of substrate is made of some pine bark, pine needles, chestnut bark and chestnut leaves that fall and accumulate and then rot and ferment. This substrate is loose and fertile, rich in organic matter, good in air permeability and water solubility, and suitable for the growth of orchids. It is the growth substrate chosen by orchids in nature.

Based on this characteristic of orchid, the plant is made of aged pine bark and chestnut bark after machine granulation and fully fermented. It is rich in blue bacteria, good permeability, uniform particles, sufficient fertility, clean and sanitary, easy to use, the particle size is about 0.5-2cm, and the powder below 0.5cm is screened out. The advent of this product not only subverts the traditional concept of orchid cultivation, but also changes the current situation that it is difficult for many orchid friends to raise orchids in the country.

Most orchid plants on the market do not contain chestnut bark, in order to save time without fermentation or high temperature carbonization (carbonization of bark by thermal radiation, the carbonization process removes organic matter, without fermentation, what you buy is carbon. It is not an organic orchid plant, but Baidu), there is no screening powder, it is sold to you together with the powder, and some cheap media such as mixed white perlite have poor air permeability. Fast decay, short service life, unclean, easy to breed bacteria, orchids raised with this plant are easy to rot roots, leaves black, yellowing or death, should pay attention to identification, careful use!

It is suitable for orchids, Dendrobium candidum, Phalaenopsis and other fleshy root plants and orchids. It can be used in open bags without adulterating other media, changing or fertilizing for 3 years or so. It can also be mixed with hard media such as stone, goldstone, ceramsite and burning soil. It can effectively solve the problems of rotten roots, blackening and yellowing of orchids, make orchids abruptly grow crystal roots, and improve the seedling and flowering rate of orchids. Easily raise orchids.

Component concept:

Super value package post 11.2L, about 4jin, can use 500ml mineral water bottle to fill more than 22 bottles, super value package has 22.4L, about 8jin, can use 500ml mineral water bottle to fill about 45 bottles

Planting effect display:

Express delivery default to send Shentong or daily express, Xinjiang, Xizang, Qinghai, Inner Mongolia, Ningxia send surface mail, need to pick up their own postal service, if you have special requirements, please contact customer service!

A detailed explanation of the symbiotic relationship between orchids and bacteria

1. The formation and physiological function of orchid mycorrhiza.

Forest vegetation is the native place of Orchidaceae, and the mycorrhiza formed by symbiosis of orchids is common in forest soil. Most of the symbiotic bacteria in mycorrhiza belong to half-knowing bacteria and basidiomycetes. They have a great influence on the growth of Orchidaceae. The seeds of orchids are tiny and dusty, and there are few nutrients stored in themselves. it is not enough to supply seeds to germinate and grow into seedlings, and it takes a long time. However, due to the existence of symbiotic bacteria in the forest, the fungal hyphae can quickly penetrate the epidermis of those well-developed orchid seeds, enter the embryonic somatic cells, form mycelium clusters in the cell cavity, and constantly dissolve and release nutrients to supply the smooth growth of germs and seedlings. There is no seed seedling stage in orchid under artificial domestication or cultivation, and it is mainly propagated by vegetative seedling. However, symbiotic fungi combine with the roots of orchids to form mycorrhiza, which is very important for the growth and development of orchids.

1. The formation and characteristics of mycorrhiza.

No matter the orchid or the domestic orchid, the orchid root has symbiotic mycorrhizal fungi, and the root surface is attached to hyphae and spores. If there is native soil, there are more hyphae and spores in the soil. Orchid mycorrhizal fungi are endophytic fungi. When the new roots elongate, some organic substances are secreted on the surface, which stimulate the hyphae and spores that attract the soil near the old mycorrhizal rhizosphere to germinate germ tubes (bud tubes grow into hyphae) and elongate to the new root surface. In addition, the mycelium has a tendency to root near the rhizosphere. After contact with the root, the hyphae can pass through the root bark into the cortical cells and form intracellular hyphae in the cell cavity, and the intracellular hyphae can be transmitted from one cell to another. Intracellular hyphae are often nodular or ring-shaped, collectively referred to as mycelium. The mycelium does not infect the growth cone (crystal head) of the orchid root, which makes the orchid root maintain the exuberant growth ability. The mycelium on the root surface is relatively sparse, which mainly absorbs water and minerals and produces conidia. There is no change on the mycorrhizal surface, the extra-root hyphae can be seen under the microscope, the hyphae have transverse septum, and there are mycelium clusters in the cortical cells, which is the place where orchids and bacteria exchange nutrients.

2. Physiological function of mycorrhiza.

(1) absorption function. External mycorrhizal hyphae absorb soil water directly, and the absorption and transport efficiency of mineral elements are very high, especially for organic phosphorus and insoluble phosphorus. It is mainly caused by the increase of the amount and activity of acid phosphatase and phospholipase secreted by mycorrhiza or the change of soil ph value.

(2) synthetic function. Intracellular mycelium produces some active substances such as enzyme precursors, coenzymes and plant growth regulators that participate in the growth and development of Cymbidium. Amylase produced by mycorrhizal fungi can improve the utilization level of carbohydrates in orchid seedlings.

(3) the storage and transformation function of nutrients. In the process of mycorrhizal formation, mycorrhizal fungi continue to use the photosynthates of orchid plants to grow, form mycelium clusters in the root cortex cells, and accumulate a large number of nutrients. In the early stage of mycorrhizal formation, both mycorrhizal fungi and orchid strains competed for nutrients for their own growth, and both grew slowly. With the vigorous growth of orchid plants, the expansion of photosynthetic organs and the increase of photosynthate, mycorrhizal fungi had the material basis for expansion, mycelium elongated rapidly and a large number of intracellular mycelium emerged. When the orchid plant is in the vegetative growth and reproductive growth stage or flowering stage, and the orchid plant needs a lot of nutrients, various invertase activities in the mycorrhiza are active, resulting in a large number of digestion of intracellular mycelium, constantly releasing sugars, amino acids, hormones, minerals and other nutrients to supply the growth and development needs of the orchid plant. Therefore, mycorrhiza is the storage and converter of nutrients in orchid plant.

(4) the existence of mycorrhiza can enhance the resistance of orchid plants to some root diseases. After the symbiotic relationship was established by mycorrhizal fungi for the first time, it is difficult for other pathogenic bacteria to invade mycorrhiza and establish parasitic relationship. Therefore, the well-developed mycorrhizal root system is strong, full of vitality, and has strong resistance to bacteria. On the contrary, after the pathogenic bacteria invade the cortex of Langen, it is difficult for mycorrhizal fungi to invade again. In addition, Langen with physiological aging or mycorrhizal fungi decline is easy to be attacked by pathogenic bacteria in the soil.

2. The main conditions affecting the formation and development of mycorrhiza.

1. The roots, stems and leaves of the orchid plant should be intact, robust and disease-free.

In the symbiotic relationship of orchid bacteria, orchid strain is the host and nutrition provider of mycorrhizal fungi. The orchid plant is robust and intact, normal growth and development, and active metabolism, which can provide sufficient nutrition for the development of symbiotic bacteria. If the orchid plant is incomplete and weak, the growth of new roots is slow, or even infected with diseases, the mycorrhiza will be difficult to form, and even the mycorrhiza that has already been formed will decline.

2. There are mycorrhizal fungi and effective vegetative forms in the orchid strain.

Mycorrhizal fungi exist in the mycorrhiza of the orchid strain, and the orchid is inseparable from the bacteria, just like the lactic acid bacteria and bifidobacteria (beneficial bacteria) in the human large intestine, which together with other harmful bacteria accompany human life in the large intestine for life, forming the microecological relationship between the growth and decline of each other. When beneficial bacteria are dominant, it can synthesize many beneficial substances, help digestion and inhibit the growth of harmful bacteria, which is very beneficial to human health. When harmful bacteria are dominant, the human body is in a morbid state. Similarly, as the orchid plant propagates separately, the mycorrhiza enters a new environment with the seedlings, and the mycelium and spores produced by the mycorrhizal fungi on the root surface are scattered in the soil, preparing the source for the infection of new roots. When transplanting orchids, the new substrate may also contain the vegetative form of mycorrhizal fungi and become the source of infection.

Hyphae and spores are the vegetative forms of mycorrhizal fungi. They must be close to the young roots and have conditional contact with the roots. Only when there is a certain supply of carbon source (organic matter) in the soil, the mycelium vitality can be maintained and young roots can be infected.

3. it is necessary to have suitable environmental conditions.

Suitable light, temperature, humidity, air and soil fertility are necessary for mycorrhizal development. The appropriate light intensity can improve the photosynthetic efficiency of orchid plants, increase the accumulation of carbohydrates, and thus improve the nutrient supply of mycorrhiza. Temperature mainly refers to soil temperature, emphasizing stability, which is generally stable at about 20 ℃, with a change range of no more than 5 degrees, which is more suitable for the normal physiological metabolism of mycorrhiza; the humidity in the soil is contradictory to the air, and the air is squeezed out of the soil when the soil water content is high, and mycorrhizal respiration is affected because mycorrhizal fungi are aerobic. When the water is soaked for too long, the mycorrhiza is poisoned, a large number of mycorrhizal fungi die, and the symbiotic relationship disintegrates. It is generally believed that the soil water content of 30% is better able to deal with the contradiction between air and water; soil fertility is composed of comprehensive factors, the content of organic matter is high, various mineral elements must be rich, but nitrogen fertilizer is too high, it is disadvantageous to the growth of mycorrhizal fungi, and the ph value is about 6.

Third, attach importance to the cultivation of mycorrhiza.

1. Equipped with suitable substrate for mycorrhizal development to create a good ecological environment for orchid symbiosis. Plant orchid substrate is loose and permeable, strong hydrophobic and water retention capacity, rich in organic nutrients, stable temperature and fertilizer, clean without pathogenic bacteria and nematode infection, soil ph slightly acidic, such a substrate environment better coordinate the contradiction of water, air, temperature and fertilizer, which is not only conducive to the growth of orchid roots, but also conducive to the development of mycorrhizal fungi. In addition, when planting orchid, adding a little of the original matrix is tantamount to the introduction of symbiotic bacteria, which is beneficial to the invasion of new mycorrhizal fungi as soon as possible and the re-infection of old roots. However, it should be noted that the orchid seedling and the original matrix have never been ill.

2. When transplanting orchid seedlings, in addition to the strong orchid seedlings and intact stems and leaves, they should also carefully remove rotten roots, empty roots, discolored and senescent roots, and carefully protect each orchid root and crown root (crystal head). In general, as long as it is a normal growth of orchid seedlings, turn the pot to separate seedlings, rinse the seedlings with tap water to dry and transplant, try not to use chemicals to disinfect. If you really want to disinfect orchid seedlings, chemicals should choose fewer varieties of internal absorption, so as to reduce the damage to mycorrhizal fungi.

3. Healthy cultivation, scientific management, maintenance of symbiotic relationship between blue bacteria and healthy development. The purpose of management is to regulate the changes and balance of ecological factors such as light, temperature, water, gas and fertilizer, and play an overall role according to the situation, so as to fully meet the ecological habits of orchids and bacteria and promote the symbiosis and co-prosperity of orchids.

In the natural forest ecosystem, heaven and earth is leisurely, all things evolve, and the years have created the convergence of ecological habits of orchid and bacteria, the complementarity of physiological needs, and the dependence of life existence. For example, both Langen and mycorrhizal fungi are aerobic and need sufficient oxygen; both need stable soil temperature; require soil Ph to be acidic; moist but not wet soil moisture; have the structure to adjust the concentration of soil solution; appropriate light intensity to ensure an adequate supply of photosynthates.

Flowers, your good teacher on the road of raising orchids.

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