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Cause analysis and treatment of orchid bud dropping: attention should be paid to fertilizer, water a

Recently, I heard some orchid friends say that their orchids are about to bloom, and the buds have dropped a lot. I don't want those who are distressed. It's also said that the buds will turn black and dry before they fall. Huayou is worried that this is a serious disease. So, today I'll explain why orchids lose their buds and what to do if they do.

New bud (left) and dry bud (red circle)

Cause analysis and treatment of orchid bud drop this situation is actually "orchid bud stiffness", the early symptoms is the bud black and dry, and then fall. The flower bud differentiation of orchid is in the mature stage of new seedlings, which lasts for nearly one year. Generally, after one year's nutrition accumulation, the flower bud is unearthed. The flowering period of different varieties is different. After the buds of Cymbidium, Cymbidium, Cymbidium, Cymbidium, Hanlan, Chunjian and lianbanlan are unearthed, there is a long period of growth, bud pregnancy and vernalization. This process is as short as five or six months, and even seven months. It is not long for Cymbidium sijiense and Cymbidium xiahanense to bloom from the flower bud. The short time is about 20 days, and the long time is 30 to 40 days.

No matter whether there is vernalization or not, we should pay attention to the management of fertilizer, water and light during the vegetative and reproductive growth stages. There are many reasons for the death of flower bud blackening, withering and falling off, most of which are caused by too much humidity, too much fertilizer, no ventilation and other reasons.

Generally, flower bud differentiation is enough to show that the nutrition is sufficient, and there is no need to continue to apply fertilizer, only foliar topdressing is enough. The so-called flowering period should pay attention to the management of fertilizer and water, to promote flower bud expansion, that is, pay attention to foliar topdressing. At the same time, during this period, the temperature was on the high side, and the orchid continued to grow, so sterilization and disinfection should be strengthened. When the flower bud is unearthed, if it is fertilized and irrigated blindly, coupled with the occasional high temperature and stuffy, no ventilation and other conditions, the flower bud will turn black, scorch and fall off and die.

Orchid in the bud pregnancy period, before the beginning of autumn to winter solstice, to strengthen the phosphorus and potassium fertilizer topdressing, promote the bud expansion by a long way, regardless of sterilization or spraying thin fertilizer, the interval is 7 days to 10 days, not too often, too thick, appropriate more sunlight, otherwise it will hurt the bud, lead to rotten heart. In addition, we should pay attention to the control of water and fertilizer before flowering. When the bud is small, you should pay attention to water once or twice, which has a direct relationship with the quality of later flowering. If you are not in a hurry to participate in the orchid show, do not deliberately adjust the temperature and humidity, let it open naturally.

During the vegetative growth period of new seedlings, multi-element fertilizer with nitrogen as the main fertilizer should be applied to promote the growth of plants, achieve the purpose of disease resistance and drought resistance, and ensure the conditions of flower bud growth. Therefore, whether the bud can bloom normally is closely related to the early management.

Orchid buds burst out of the earth