How to improve the seedling rate of orchids

First, understanding the law of orchid germination is the theoretical basis for improving the germination rate of orchids. As we all know, the new orchid plant is from the false phosphorus stem, so in order to understand the law of orchid seedling, we must first find out what the false phosphorus stem is all about. The pseudophosphate stem of orchid is an abnormal orchid stem, mostly oval, with the function of storing nutrients, and is a carrier for long leaves, rooting, sprouting and flowering. It is usually composed of 16 shortened nodes, each of which has bud points, and the top nodes grow leaves, which play the role of photosynthesis and transpiration; the bud points of the middle and upper nodes are surrounded by foot shells (leaf sheaths), called epigynous buds, and most of them develop into flower buds, and a few develop into leaf buds. Most of the bud points on the six or so nodes in the middle and lower parts are wrapped in membranous scales, which are called inferior buds, which are mostly transformed into seedlings; the lowest nodes take root, which are used to absorb nutrients and play a supporting and fixed role, and sometimes sprouting occurs. Therefore, each mature seedling can theoretically give birth to at least six orchid seedlings, but in general, there is only one seedling, some send Ssangyong, a few send three seedlings, and the rest of the buds are dormant. Understanding the law of orchid sprouting, our task of raising orchids is to give full play to subjective initiative on the basis of respecting objective laws, take necessary measures to prevent dormant buds from sleeping, and find ways to awaken them so as to achieve the goal of multi-sprouting. 2. Moderate ramet is the main measure to improve the germination rate of orchids. Theoretically, the nutrition of orchid plants is transported by chain. After the new growth center is formed, it absorbs the nutrients produced by neighboring orchid plants, which is what we usually call "apical dominance". Thus inhibit the germination of other dormant buds. On the basis of this, we can use the method of cutting off the nutrient chain to induce the emergence of orchid plants, that is, the so-called "ramet", in order to promote the germination of dormant buds and achieve the purpose of multiple seedlings. From a practical point of view, moderate ramet is also absolutely necessary. First of all, there are more orchid plants in the basin, resulting in a situation of too many monks in short supply, and if there is no supply of nutrients, it is bound to produce fewer seedlings and seedlings. Secondly, the orchid clump in the basin is bigger, the orchid plant is more, the root of the orchid is tangled together in the basin, the lower part of the orchid bud can not squeeze out, or even drill into the root to suffocate, resulting in premature death, even if the bud comes, the root of the new bud also has no place to stand, and the bud grows very weak. Third, the old seedlings and new seedlings live together for several generations, and the old orchid plant not only does not germinate, but also consumes nutrition and needs to be "supported by children and grandchildren", thus affecting the germination of new grass. Fourth, the ancients had the saying that "if you are extremely weak, you will be divided". If you are too strong and too dense, the germination rate of orchids is often very low, wasting resources in vain. I have a very strong Cui Mei. I won a silver medal at the Orchid Expo for the second time. Because the grass was so large that I was reluctant to share it, only three seedlings were sent out of the seven-seedling grass at that time. Last year, I divided the 10-seedling grass into five pots, one for every 2 seedlings, of which two pots sent three seedlings, and the other pots all sent two seedlings, and a total of 12 seedlings were issued. If they are not divided, they can only send out a maximum of three seedlings. Thus it can be seen that timely split is beneficial to multiple seedlings, which is an indisputable fact. Third, the replanting of old grass is an important way to improve the germination rate of orchids. Generally speaking, the nutrition of old grass is delivered to the next generation in obscurity, which can be described as "dedication until death." however, there are also some rootless or poor-rooted old grasses whose nutrition is provided by new plants, which is the so-called "supported by children". Such old plants are bound to affect the growth and germination of new plants. Therefore, in order to split plants scientifically and reasonably, the most important method of what we call "scientific and reasonable" is "replanting old grass". When talking about ramets, predecessors always said that they should be "separated from the road" and must be "three generations in the same house". There is a reason to say that it is divided into two parts: first, the wound is small and the plants of Leymus are restored; second, the survival rate is high, which can ensure that the dragon grass can thrive and blossom; and third, it can produce large and strong grass. But there are also disadvantages, mainly because the old grass is connected with the new grass, and it is difficult for the old grass to sprout in the same house for several generations, so they have no choice but to spend the rest of their life waiting for "retirement." I think the best thing to do is: depending on the situation of the orchid clump, the bibcock should be cut off 2mur3 trees respectively at the ramet to facilitate the growth of strong buds and grow big grass, while the old grass can be replanted separately with a clump of 2murl 3 plants, so that the old grass which has not sprouted for several years can come out of the wall, coruscate its youth and regenerate its noble son. This year, I planted the old grass with two seedlings and unexpectedly sent out three buds, while the old grass with two seedlings and one grade of old grass also planted two seedlings, which can be said to be a hundred hits, and good news spread frequently. If you are interested, you might as well give it a try. 4. Sprain bulb connection is the traditional experience to improve the germination rate of orchids. It is the traditional experience accumulated by our orchid ancestors, which is correct in theory and successful in practice. In theory, the junction of the bulb was sprained, that is, the transport of nutrients between orchid plants was affected, and the nutrition made by old grass encountered difficulties in the forward end, thus stimulating dormant buds and producing new plants. The specific method is to take out bluegrass from March to April in spring, squeeze the middle and upper parts of the two pseudo-phosphorus stems with both hands (do not pinch the bud points) and twist 90Me 180 degrees in the opposite direction to hear the sound of "beep". Pay attention not to completely break the connecting stem, to make it in a semi-separated state, apply methyl topiramate powder on the sprain to prevent infection of bacteria, and then plant the orchid plant into the basin, it won't take long. The pseudo-phosphorus stems of the father, father and offspring in the semi-separated state can each send out new buds and some can also send out Ssangyong. The buds produced by this method are also stronger. This spring, I introduced three seedlings of heavenly green and strong grass, the bulbs are full, and the former dragon has seen a leaf bud. I sprained two connecting stems using the above method, and now each false phosphorus stem of the father, father and offspring has sent one seedling; on the same day, the two seedlings of "high-grade round plum" are made in the same way, and now the second generation of grass also sends one seedling. It really missed the shot and hit it. It must be noted that this method is only applicable to Chunlan, Huilan because the false phosphorus stem is small, and the connecting stem is short and thick, it is difficult to dispose of into a semi-separated state, whether it is feasible, I have not yet put it into practice. 5. Propagation per plant is a necessary means to improve the germination rate of orchids. As the ancients said, "orchids like to cluster but fear leaving their mother", so they do not advocate single planting, and they all think that it is best to plant 5 plants in a clump. What the ancients said is reasonable, because the grass planted by a single plant is small and difficult to grow. However, due to the high price of orchids and the fact that rare varieties are in short supply, there is a new attempt to breed a single plant. It should be said that the theoretical basis of single propagation is the same as that at the joint of sprained corms, that is, it is theoretically correct to cut off the nutrient transport between corms and stimulate dormant bud germination on the bulbs. Individual propagation should be carried out from April to May in late spring and early summer, and the temperature is more suitable for orchid germination and rooting. There are two ways to propagate a single plant: one is to turn over the basin and separate and replant, which has many disadvantages, the grass sent out is also small, and the management is more difficult. Another method is not to turn the basin, remove the plant material above the false phosphorus stem, expose the connecting stem between the two false phosphorus, cut off the connecting stem with sterilized scissors or scalpel, apply methyl thiophanate powder to the wound for disinfection, strictly prevent infection of the virus, and fill in the sterilized plant material in a few hours, preferably a gold plant stone, and new buds can be found in about 20 days. This can not only preserve the absorptive capacity of the original orchid root, but also reduce the recovery time of the plant, which not only germinates early, but also the buds are much stronger. During May Day this year, I cut each of the four rare varieties, Lao Duoyun, Lao Fengqiao, Green Peony and Xinhua Mei. Now there are two seedlings in Old Duoyun and one seedling in the rest, which can be said to be "invincible and invincible." It must be noted that the premise of single plant propagation is that the seedlings are strong, the roots are developed, and the orchid plants with weak roots should not be reproduced alone, and it is limited to the measures taken by rare varieties to keep seeds, after all, the grass is small and weak. As for the general varieties, there is no need to be so excited, and the loss outweighs the gain by sending a few seedlings of grass.