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花卉为什么能够周年栽培呢?大家知道,任何植物休眠,不是因环境不适引起的被迫休眠,就是自身生理特性改变导致的自然休眠。这些休眠都可通过改变环境条件予以打破,促使植物提前或推迟生长发育。唐菖蒲自然也不例外了。唐菖蒲的种球是球茎,当年主梢茎基缩短的膨大体为休眠器官。球茎呈扁圆形,在原产地南非,为了度过干旱季节,在这之前就把养分贮存在地下茎中,直到气温回暖,雨季到来,才开始萌芽。球茎周围还有许多小球,大的有花生米大,小的只有绿豆大。这些小球可以繁殖成种球。种球越大,表明其代数越高,越退化。种球外包着2～4层褐色外膜,起保护作用。剥去外膜,可看
Why flowers can be cultivated on an anniversary? We all know that any plant dormancy, not because of environmental discomfort caused by forced dormancy, that is, their physiological characteristics caused by changes in the natural dormancy. These hibernation can be broken by changing environmental conditions, prompting plants to advance or postpone their growth. Gladiolus is no exception. Gladiolus bulbs bulbs, when the main stem shortening of the expansion of the body as a dormant organ. Bulbs are oblate. In South Africa, where the origin is, in order to survive the dry season, nutrients are stored in underground stems until the temperature warms and the onset of the rainy season begins. There are many small balls around the bulbs, large peanuts big, small only mung beans. These balls can breed into bulbs. The larger the bulbs, indicating that the higher the algebra, the more degradation. Seed ball outsourcing with 2 to 4 layers of brown outer membrane, play a protective role. Peel the outer membrane, can see