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Orchid buds, causes and prevention
The joy of raising orchids throughout the year is also three: a lot of new seedlings in the spring; a lot of autumn flower buds; a lot of flowers in the coming year. However, we often find that some buds grow black, shrink, and fall off as they grow. How can we prevent the emergence of orchid buds? Through years of practice, the author observed that orchid flower bud differentiation is a mature period of new seedlings and lasts for nearly one year. In general, orchids accumulate nutrients after one year, and flower buds are unearthed. The flowering period of each species is not the same. After the flower buds such as Chunlan, Cymbidium, Muran, Cymbidium, Spring Sword, and Rose Petal were unearthed, there was a longer period of growth, buds, and vernalization. This process is short for five or six months. It may take as long as seven months. Four seasons blue, summer cold blue, etc. from the flower buds to the flowering, not long, short 20 days, long 30 days to 40 days. Regardless of the vernalization period or the lack of vernalization, pay attention to the management of fertilizer and water in the vegetative and reproductive stages. There are many reasons for the death of the calyx, black and burnt off, most of which are caused by excessive humidity, excessive fat, and lack of ventilation. Generally, the flower bud differentiation is enough to indicate that the nutrition is sufficient and no further fertilizer is needed. Only foliar dressing is needed. The so-called flowering period should pay attention to the management of fertilizers and waters, so that the flower buds grow large enough to pay attention to the foliar dressing. At the same time, during this period of high temperatures, orchids continue to grow, to strengthen sterilization. After the flower buds have been unearthed, if the fertilization and irrigation are performed blindly, and occasional high-temperature sweltering, no ventilation, etc. occur, it will happen that the flower buds are dark and burnt off. In the bud of orchids, before the beginning of autumn to the winter solstice, it is necessary to strengthen the topdressing of phosphorus and potash fertilizers, and promote the calyx to enlarge. No matter whether it is sterilized or sprayed with thin fertilizers, the interval time is from 7 days to 10 days. It cannot be overworked or over-concentrated. Sunshine, otherwise it will hurt flower buds and cause rotten heart. In addition, pay attention to water control and fertilizer control before flowering. When the flower bud is small, pay attention to deducting water once or twice. This has a direct relationship with the quality of flowering. If you are not in a hurry to participate in the orchid exhibition, do not deliberately adjust the temperature and humidity, let it naturally open. In the vegetative growth stage of the new seedlings, a multi-element fertilizer based on nitrogen fertilizers should be applied to promote the growth of the plants and achieve the purpose of disease resistance and drought resistance, and ensure the conditions for flower bud growth. Therefore, flower buds can not normally bloom, inseparable with the previous management.