The soil needs a mixture of fertile humus, peat and coarse sand, and the pH value is between 5.5 and 6.5. The optimum temperature for the growth period of Crab Claw Orchid is 18 ~ 23℃, and the suitable flowering temperature is 10 ~ 15℃, not exceeding 25℃. It is best to maintain 15℃, and the winter temperature is not lower than 10℃. Crab claw orchid is a short-day plant, which can germinate and bloom only under short-day conditions. In order to understand the requirements and adaptability of crab claw orchid to soil, I made a difference between the soils of three groups of plants. That is, one basin in each group is a mixed soil composed of humus, peat and coarse sand, and the other group is a mixed soil composed of loess and fine sand. After pH measurement, the pH value of mixed soil is about 5.5, and that of general soil is about 7.5. However, during the planting process, it is not found that the two soils have obvious effects on plant growth. But the effect of water on crab claw orchid is more obvious. In May, two pots of plants in the experimental group (balcony group) were watered. Water the mixing basin every other day (thoroughly), and water the mixing basin once a week (thoroughly) for two weeks. Results the phenomenon of bud falling and root rot began to appear in the mixed soil basin. When continuous watering is stopped for one week, the soil gradually dries, the plants with rotten roots are removed, and other plants gradually grow normally. Generally, the soil basin grows normally, and no root rot is found. Crab claw orchid has obvious requirements for fertilizer. The experimental group used five times diluted acquaintance urine every fifteen days, while the control group used the same fertilizer every thirty days. The number of stems and leaves in the experimental group was significantly higher than that in the control group, and the number of buds was also significantly higher than that in the control group. (Of course, there are other factors. ) The influence of three light sources Crab claw orchid is a short-day plant, and proper light has obvious influence on its growth. The experimental group (balcony) is in a short-day environment for a long time, three hours in summer and about six hours in winter, and the strong scattered light is very suitable for its growth. The indoor group has no sunlight for a long time, only scattered light, and its growth speed, flowering time and flowering period are all affected. The formation of the roof has been in the changeable environment of long sunshine, high temperature and low temperature for a long time, and its growth has also been greatly affected. The propagation of four crab claw orchids generally includes cutting, grafting and seed propagation. The author only carried out experiments on the first two kinds. The author randomly selected several older stems and leaves, about five to six knots, from the spring and autumn, and put them on the edge of the basin to dry for three to four days. When the cracks are dry, insert them into the spare basin and water them. The washbasin is placed on the balcony. Then water every 3-5 days to keep the soil moist. After about 1 month, the cuttings will take root and sprout. The plant type of cuttage propagation is not beautiful and there are not many flowers. After consulting the flower farmers in the flower market, it is said that the cutting plants are too small and there are not many stems and leaves distributed. In addition, it may be that there is not enough fertilizer, so it does not cost much. A year later, when the plants grow up and send out more new buds, with enough fertilizer and water, the situation will change. It is reasonable to compare the growth and flowering of the experimental group that has formed dense plants. Potted crab claw orchids sold in the flower market are mostly densely cut off dozens of stems and leaves, and then constantly germinate and grow to form dense plants, so they look lush and have a lot of flowers. Grafting In April 2007, the author conducted a grafting experiment. The specific method is: the rootstock is commonly used with triangular rods. First, cut off the top of the rootstock horizontally with a disinfection blade, and then cut off the epidermis of the crab claw orchid with a blade to expose the tube bundle. Immediately after cutting, insert the rootstock incision with a depth of about 2-3 cm. To prevent the scion from slipping out, fix it with cactus thorns (about 2 cm). When fixing, gently pinch the incision of the rootstock with your hands, so that it can grip the scion and stop for a moment, so that the two parts can be closely combined and the liquid can penetrate each other. The grafted plants were kept in the shade to keep the soil moist and survived after two weeks. Judging from the five pots of grafted plants, one pot was watered carelessly, and the interface was stained with water, which did not clear the soil, resulting in interface rot and no survival, while the rest grew well. Some Experiences of Crab Claw Orchid Cultivation After two years of careful practice, I have some experiences on the growth and cultivation of Crab Claw Orchid. Crab claw orchid has a beautiful plant shape and usually blooms in autumn and winter. On the deformed stems of hanging umbrella plants, there are beautiful flowers. At the same time, its flowers can bloom indoors without direct light, and it is a popular indoor potted flower. Crab claw orchid requires shade, humid environment, potted soil, good drainage and good ventilation. Try to place it under a cool, rain-proof and well-ventilated window or balcony in summer. If the air is dry, hot and poorly ventilated, it will not grow well, especially if it is not placed in a place with strong direct sunlight and high temperature. In the season of vigorous growth, you can apply some dilute liquid fertilizer. After autumn, some topdressing can be applied before flowering. In early June, 5438+ 10, transplanting in a sunny place indoors is very beneficial to its growth and flowering. Crab claw orchid is a short-day plant, which can bloom in 2 or 3 months under short-day conditions. If you want to blossom on National Day, you can move into a darkroom in early August, see the sun for 8 hours every day, and you can blossom in late September. When the crab claw orchid sprouts, the pot soil should not be too dry, otherwise the bud will fall off easily. After flowering, the flowerpot should be moved to the shade to prolong the flowering period. Crab claw orchid sleeps for a period of time after flowering, and keeps the basin soil dry during dormancy. When abnormal stems begin to sprout, they are usually watered once every 3-5 days and once every 20 days. From the experiment, the crab claw orchid is also suitable for indoor potted plants. For indoor potted Crab Claw Orchid, loose, fertile and slightly acidic soil with good drainage should be selected, and some organic matter should be put at the bottom of the pot as base fertilizer. Although the crab claw orchid belongs to a short-day plant, it likes to scatter light and avoid the hot sun, but after all, there is not enough indoor light. It's best to put flowers near the window to absorb more sunlight. Crab claw orchid can't be watered more, but it can be watered once every 10 day indoors (indoor evaporation is small). Apply balanced fertilizer once a month (the author applies compound fertilizer bought in the store, and about one gram is dissolved in 500 grams of water and poured on the roots, and the effect is also good). It is not difficult to propagate the crab claw orchid, and its stem can be directly cutted or grafted for propagation. Cutting propagation of Crabapple can be carried out in spring, summer and autumn, but cutting in spring and autumn is the best. When cutting, cut off a few tender stems, air them for 2-3 days, and then cut them after the incision is slightly dry. Loose sand is the best cutting soil. After cutting, water it slightly and put it in the shade. Then water every 3-5 days to keep the soil moist. After about 65,438+0 months, the cuttings will take root and sprout. The cuttage propagation of crab claw orchid is not beautiful and there are not many flowers. There will not be more flowers until the stems and leaves are divided into many stems and leaves. Grafting propagation of Crab claw orchid can be carried out in spring and autumn, and grafting in spring is better. Generally, plants grafted in spring can blossom in winter if they are well maintained. The specific method of grafting is: the rootstock is usually cactus or trigonal sword. First, cut the top of the rhizome horizontally with a disinfection blade, and then peel it with a blade to make it wedge-shaped. It's best to cut it across the board, and don't cut it repeatedly. Immediately after cutting, it is inserted into the V-shaped mouth of the rootstock, and the depth is about 2-3 cm. In order to prevent the scion from slipping out of the interface, it can be fixed with cactus thorns. When grafting, you should gently pinch the incision of the rootstock, let it hold the scion, and stop for a moment, so that the two parts can be closely combined and the liquid can penetrate each other. After that, it is best to wrap it with plastic film and maintain it in a cool and rainproof place. When watering, just keep the soil moist, don't water it too much, and water can't be poured into the joints. It usually takes half a month to survive. Practice shows that the grafting of Crab Claw Orchid is relatively easy to survive. Crab claw orchid is a temperate plant, which needs warm and sufficient light in winter. Winter is coming, so we should pay attention to avoid the cold current. In Fuzhou, every year after 1 1 month, people usually move indoors for maintenance. Otherwise, if the temperature is too low (about 10℃), plants will be easily frostbitten and even killed. In a word, Crab claw orchid is a very easy flower to cultivate. As long as it is carefully cultivated, it can survive and reproduce successfully.