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大家知道,甘蔗茎从茎基到顶梢的每一个节,都可以用来作种,但以那一茎段的节作种最好呢?近年来,有关科研部门曾选用不同节位的蔗种,做过这方面的对比试验。结果表明:用蔗梢(蔗茎生长点60厘米左右部分)节作种的,1个月就可以出苗,出苗率达98%;而用蔗秆中段作种的,要40天才能出苗,出苗率为90%左右;而用蔗茎老头作种的,要50天才能出苗,出苗率不到85%。蔗梢顶段吃起来乏味不甜,食用价值低,为什么作种反比中下部茎节好呢?这是因为梢顶部茎中的葡萄糖大多尚未变为蔗糖,能够直接被蔗芽吸收利用,所以蔗节腋芽活力强、萌芽早、出苗快。而蔗茎中下部成熟早,茎内大部分葡萄糖已转化为蔗糖,用它作种,栽植后还要诗茎内蔗糖再度转化为葡萄糖后,
Everyone knows that sugar cane stems can be used as a seed for every section of the stem from the base to the top. However, it is best for the section of that stem to be planted in recent years. In recent years, relevant research departments have used sugarcane with different node positions , Done comparative tests in this area. The results showed that: with cotyledons (cane stem growth of about 60 cm) section for seedlings, one month can be sprouted, the emergence rate of 98%; and the middle of the straw cane as a species, to 40 days to emergence, emergence The rate of about 90%; and cane old crop for planting, to 50 days to emerge, the emergence rate of less than 85%. Cane shoot top taste boring sweet, low edible value, why the lower part of the anti-stem section for good? This is because most of the tip of the stem of the glucose has not yet become sucrose, sugar cane directly absorbed, so sugarcane Day axillary buds strong vitality, sprouting early, quick emergence. The lower part of the cane stem mature early, stem most of the glucose has been converted to sucrose, use it as a species, but also after transplanting the succulent poem stems once again transformed into glucose,