There are three factors that affect the flowering quality of Phalaenopsis. The first is the genetic factors, including the color, shape, size, number, number of stems, whether the stalk is bifurcated, and the length of pedicels. The second is the healthy state. Phalaenopsis must reach sufficient maturity before cold-stemming; the plants must store enough dry matter; the plants are free of disease, no pests, no virus, no phytotoxicity, and no salt accumulation in the roots. The third is the environmental factors, including the daily temperature, night temperature, relative humidity, photoperiod and light quantity of the leaves, as well as the moisture, temperature, and fertilizer points of the roots. These environmental factors must maintain the most appropriate state. The root environment is influenced by factors such as pots, media, and management techniques. Management techniques include irrigation, fertilization, and basin replacement.
Genetic factors, health status and environmental factors are related to each other. Genetic factors determine the best quality that orchids can perform. Take P.amabilis as an example. If the orchid plant is mature enough and the cold stress-stemming and flowering environment are appropriate, the flowering performance of the orchid plant is at least twenty small white flowers. If the plant is immature, or if it is damaged by diseases or insect pests, or if the temperature or light is not suitable, the number of flowers will be reduced. Due to the influence of genetic factors, re-ripe plants, and no matter how good the flowering environment is, P. amabilis is still a small white flower and cannot increase the size of flowers to medium-sized flowers.
If the above factors are all maintained in a normal state, the stemming and flowering operations can be performed. It is very important to regulate the microclimate and fertility management of the stem and flowering stages. The leaves must maintain the most appropriate day and night temperature, light quantity and photoperiod must also be appropriate, the supply of fertilizer points must be correct, the leaves can accumulate dry matter and then transported to the pedicel and calyx to ensure flowering quality. The flowering stage is the final stage of cultivation of the phalaenopsis, and it is also the last stick of the production process.
Taking the temperature factor as an example, the temperature management of the flowering stage of Phalaenopsis can be subdivided into the following indicators: first, the day-night temperature of the cryogenic treatment of stem stalks; and second, the upper limit of the daily temperature and the upper limit of the night temperature during flower bud differentiation to pedicel formation. Third, the day and night temperatures during the cultivation period. As long as the day and night temperature of the greenhouse is lower than the critical value of the daily temperature and the critical value of the night temperature, there is a reminder effect. The lower the temperature, the more effective the stemming effect, the faster the stemming. However, it is not allowed to make the temperature lower than the temperature of chilling, otherwise the reverse effect is likely to occur.
In order to control the timing of the flowering of the Phalaenopsis flowering plant, the period from flower bud differentiation to flower bud blooming can be sold, and then subdivided into two stages: the pedicel growth stage and the calyx opening stage. The setting of day and night temperature during the pedicel stage can adjust the speed of pedicel growth to control the time to market.
The higher the daytime temperature, the faster the peduncle grows, and the higher the nighttime temperature also helps to increase the growth rate of the pedicel, but the temperature must not exceed the daily temperature during the usual cultivation period. Otherwise, the peduncle will reversely differentiate into vegetative growth, and the pedicels will grow on the leaves and become New plants. In the pedicel stage, the temperature difference between day and night affected the length of the pedicel, the larger the temperature difference between day and night, the longer the pedicel; the smaller the temperature difference between day and night, the shorter the pedicel. The higher the daytime temperature, the farther the first flower bud is from the base and the shorter the length of each bud.
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