Cause judgment and control of stiff buds of orchids

Orchid cultivation throughout the year also on three joy: spring seedlings many; autumn bud many; the next year flowering many. However, we often find that some flower buds grow black, dry, fall off, how to prevent the emergence of orchid stiff bud situation?

Through many years of orchid cultivation practice, the author found that flower bud differentiation of orchids is in the mature stage of new seedlings and lasts for nearly one year. After a year of nutrient accumulation, the flower bud is unearthed. The florescence of each variety is different, spring orchid, cymbidium, black orchid, cold orchid, spring sword, lotus petal orchid and so on flower bud unearthed, there is a long time growth, bud pregnancy and vernalization process. This process can take as short as five or six months, or as long as seven months. Four seasons orchid, summer cold orchid, etc. from flower bud unearthed to flowering, time is not long, short 20 days, long 30 days to 40 days.

The management of fertilizer, water and light should be paid attention to in vegetative and reproductive growth stages of varieties with or without vernalization stage. There are many reasons for flower bud blackening, scorched and falling off, most of which are caused by excessive humidity, excessive fertilizer and lack of ventilation. General flower bud differentiation is sufficient to indicate adequate nutrition, no need to continue irrigation fertilizer, just foliar topdressing can be. The so-called flowering should pay attention to fertilizer and water management, promote flower bud expansion, that is, pay attention to foliar topdressing. At the same time, during this period, the temperature is high, orchids continue to grow, sterilization should be strengthened. When the flower bud is unearthed, if fertilization and irrigation are blindly applied, combined with occasional high temperature and sultry weather, no ventilation, etc., the flower bud will blacken, scorch and fall off and die.

Orchids in the gestation period, autumn to winter solstice before, to strengthen phosphorus and potassium fertilizer topdressing, promote flower bud expansion long, regardless of sterilization or spraying thin fertilizer, interval time is 7 days to 10 days, can not be too frequent, too thick, appropriate more sunlight, otherwise it will hurt the flower bud lead to rotten heart. In addition, attention should be paid to water and fertilizer control before flowering. When the flower bud is small, pay attention to buckle water once or twice, which has a direct relationship with the quality of flowering later. 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.

New seedling vegetative growth period to apply nitrogen-based multi-element fertilizer, promote plant growth robust, to achieve disease resistance, drought resistance purposes, to ensure the conditions for flower bud growth. Therefore, flower bud can not flower normally, and early management inseparable.