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在对150个荷花品种进行播种试验中,观察荷花种子在夏季自然变化温度下的萌发率及荷花生理情况,结果发现:温度的高低对荷花种子的萌芽率影响不明显,但温度的高低影响荷花的萌芽周期。在种子萌发适宜温度条件下,温度在25℃至35℃之间,种子萌发速率逐步提高,萌芽周期缩短;当温度临界于20℃时,种子萌发速率减缓则萌芽周期延长。在对种子进行盆栽育苗过程中,荷花植株受光照及温度的影响很大,不同时间播种种植的荷花开花情况明显不同,由于温度对植株生理发育情况产生直接的影响,4月初播种的荷花在6月中旬开花,7月份播种的荷花在9月底和10月初开花,8月份播种的荷花有显蕾但不开花。由此得出杭州地区播种的荷花时间不能迟于7月,否则当年植株不能正常开花。
In the sowing experiment of 150 lotus varieties, the germination rate and lotus physiological status of lotus seeds at natural summer temperature were observed. The results showed that: the temperature had no significant effect on the germination rate of lotus seeds, but the temperature affected lotus The budding cycle. Under suitable temperature for seed germination, the seed germination rate gradually increased and the germination period shortened when the temperature was between 25 ℃ and 35 ℃. When the temperature was at 20 ℃, the seed germination rate slowed and the germination period prolonged. Lotus seedlings in the process of seedlings in the pot, the light and temperature of lotus plants greatly affected, at different times planted lotus flowering significantly different, due to temperature on the physiological development of plants have a direct impact on the lotus planted in early April 6 Blooming in mid-July, the lotus flowers planted in July bloom at the end of September and early October, and the lotus seeds sown in August have a prominent but not flowering. It concludes that the lotus time sown in Hangzhou can not be later than July, otherwise the plants can not flowering normally.