As a thermophile, the temperature requirement is strict. Generally, 8-10 ℃ begins to sprout and 14 ℃ lotus rhizome begins to stretch. At the early stage of sowing, the temperature is also required to be above 15 ℃, otherwise, the growth of seedlings will be slow, resulting in the downstream area of rotten seedlings. Before the middle of April, it is generally not used to sow seedlings in the open field, mainly because the temperature is not enough for seed germination and seedling growth. With the increase of temperature, the continuous hot sun (above 40 ℃) is not conducive to the growth and development of water lily. 22-35 ℃ is the most suitable temperature for the growth and development of water lily. When the temperature is 18-21 ℃, it is necessary to plant and erect leaves. When the temperature is above 22 ℃ and 25 ℃, it is necessary to grow new lotus roots. At this time, it is necessary to have a lower temperature in the day and a lower temperature in the night. Most of the cultivated species turn to the stage of long lotus root when the temperature drops before and after the beginning of autumn, which shows that the pot soil increases obviously.
莲与佛教的关系十分密切,可以说“莲”就是“佛”的象征。
Lotus has a very close relationship with Buddhism. It can be said that "Lotus" is the symbol of "Buddha".
当我们走进佛教寺庙时,便可到处看到莲花的形象。大雄宝殿中的佛祖释迦牟尼,端坐在莲花宝座之上,慈眉善目,莲眼低垂;称为“西方三圣”之首的阿弥陀佛和大慈大悲观世音菩萨,也都是坐在莲花之上。其余的菩萨,有的手执莲花,有的脚踏莲花,或作莲花手势,或向人间抛洒莲花(如天女)。寺庙墙壁、藻井、栏杆、神账、桌围、香袋、拜垫之上,也到处雕刻、绘制或缝绣各种各色的莲花图案。可见莲花与佛教的关系何等的密切。
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