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The eggplant begins to differentiate into flower buds when it grows to four true leaves and the seedling stems are about 2mm thick. During the flower bud differentiation, the temperature has a great influence on the development of flower buds. In the suitable temperature range, the temperature is slightly lower, the flower buds develop slowly, but there are many long columns; on the contrary, the middle column flowers and short column flowers increase, especially the night temperature. The effects are even more pronounced at high altitudes. Therefore, the temperature must be strictly controlled during the seedling period, generally at 22-25°C during the day and 15-18°C at night to ensure the healthy growth of young seedlings and the normal differentiation and development of flower buds, laying a good foundation for high eggplant yield. .
In addition, under strong light and short daylight conditions of 9-12 hours, the seedlings grow faster and the flower buds appear earlier.
Introduction of fertility habits of eggplant seedlings
From the first true leaf reveal to the seedling bud, the seedling period is about 50-60 days. During this period, the growth of vegetative organs was performed at the same time. Four true leaves are the turning point of vegetative and reproductive growth. Before 4 true leaf stages, the growth of seedlings was very small, and the growth of seedlings after 4 true leaf stages soared, and 95% of the seedling growth was completed during this period. According to this characteristic, seedlings should be carried out before the four true leaf stages in order to expand the nutritional area and give appropriate external environmental conditions to ensure the rapid growth of seedlings.