Jiang Hehua
The ginger lotus in Chiang Mai, Thailand germinates in spring and blooms in summer. When the local rainy season changed to dry season in June 5438+065438+ 10, the aboveground parts stopped growing, the stems and leaves turned yellow and died, and went into dormancy. Short sunshine is the main factor to induce the dormancy of ginger lotus. When the sunshine length is less than 13 hours, ginger lotus will go into dormancy. The secondary factor is low temperature. When the temperature is lower than 15℃ at night, even if the sunshine hours are artificially extended, the plants will still stop growing and enter a dormant state. No special conditions are needed to break the dormancy of ginger lotus. As long as it takes a certain time, dormancy will naturally break and begin to sprout and grow. The optimum temperature for germination of lotus seeds is 30-35℃. If the dormant and awakened seeds are put at a constant temperature of 30℃ to accelerate germination, it will take about 25-30 days to germinate, and it will take about 40-50 days to germinate completely. It takes about 35-60 days to plant in the field after March, depending on the planting period and soil temperature and water management after planting. Growing season likes warm, humid and sunny climate. During the period of 5438+065438+ 10 in the first ten days of June in southern Fujian, due to the low temperature and short sunshine, the growth and development of the ginger lotus were hindered, the old leaves began to turn yellow, and the bracts from the buds became less and less, and the color became lighter. Most of them have abnormal flowers, and the output drops rapidly. By the end of June165438+1October, the leaves withered, the growth of the aboveground part stopped completely, and the underground part stopped.
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