The normal flowering period of Phalaenopsis is from March to May, so most varieties cannot bloom during the Spring Festival. If Phalaenopsis is required to bloom during the Spring Festival, it is necessary to regulate its flowering period. The specific measures are as follows. 1, greenhouse control flowering period. Phalaenopsis flowering can be controlled by adjusting the temperature. Phalaenopsis is usually set in high-temperature (25-30°C) and low-temperature (18-25°C) greenhouses under conditions of facility cultivation. The former is used as a greenhouse for the growth of Phalaenopsis and the latter is used as a greenhouse for the reproduction and growth of Phalaenopsis. Phalaenopsis flowering plants can form flower buds after one and a half months of treatment in low-temperature greenhouses. After the flower buds are formed, the night temperature is maintained at 18-20°C, and flowering can be achieved after 3-4 months. Tests have shown that flower bud differentiation rate is related to the length of daily low-temperature treatment. Plants that have been treated at low temperature for 18 hours per day have a flower bud rate of 100%; the shorter the daily low-temperature treatment time, the lower the flower bud rate. When the pedicel grows to 10-15 cm, the low temperature treatment can be finished, otherwise it will delay flowering. This type of cultivation is a high-input, high-output, and requires more investment. Per 1,000 square meters of greenhouses can be planted 15,000-20000 pots of Phalaenopsis. 2. Alpine climate regulation. Phalaenopsis can regulate temperature through the alpine climate, promoting its flowering in the Spring Festival. In recent years, some scientific research units have carried out research on the use of alpine climate resources to produce rare flowers, and successfully achieved the flowering of the Phalaenopsis in the Spring Festival. The specific approach is: from August to October in the mountains of 800 meters above sea level, phalaenopsis is promoted to induce flower bud formation and reproductive growth. When the flower buds grow to a certain degree, they are moved to the foothills and cultivated in the greenhouse in the spring season. . 3, production of Phalaenopsis tissue culture seedlings. Under normal conditions, tissue culture plants can flower after 16 months of cultivation. Phalaenopsis is a perennial flower. In general, the longer the plant age, the higher the flowering uniformity of the phalaenopsis and the more flowers, the larger the flower diameter and the longer the flowering period. Therefore, in order to obtain high-quality flowering plants, plantlets (6-8 leaves) with a plant life of more than 2 years can be used for flowering treatment, and the number of flowers can reach 8-10. 4, Chroma prime processing. After treatment can suppress leggy, improve the quality of flowering. When the flower bud grows to 0.5 cm, it is treated several times with chlormequat and until the flower bud grows to 1.0 cm. In the low-temperature greenhouse, the flowers on the flowering branch are compact and beautiful. This method is mainly used when cutting flower varieties for potting. China Agricultural Network Editor
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