【摘要】 甘蔗在生长的同时也积累糖分,在正常的情况下,生长快的积累糖分也多,但要到一定的株龄后,在低温干燥的条件下,糖分积累的速度才明显加快。春、夏植期的甘蔗,6个月株龄前糖分积累少,6个月株龄后,糖分积累才明显增多。秋、冬植期的甘蔗,10个月株龄前糖分积累少,10个月株龄后,糖分积累才明显增多。在相同的气候条件下,植期早,株龄较老的糖分积累多。夏植甘蔗虽能达到相当的含糖量,但不能达到该品种固有糖分的高峰。 蔗汁还原糖的含量随株龄的增加而降低,蔗汁重力纯度则随株龄的增加而提高,下种期较早,株龄较老的还原糖含量低,蔗汁纯度高。蔗汁还原糖含量从8～4月份起又开始增多,表明蔗株开始出现“回糖”现象。 蔗茎干物质积累与糖分积累有直接的关系,蔗茎积累的干物质多,糖分亦随之增加。 蔗茎节段的糖分含量自下而上逐节段降低,春植蔗10月份以前各节段糖分差异明显,11月份以后差异较小,并逐渐倾于一致。下部节间的糖分达高峰时需时较长,中、上部节间需时较短。表明蔗茎糖分积累从下而上依节段渐次进行是成熟的基本规律,蔗茎上下部节段的糖分接近一致是成熟的重要特征。 蔗茎节段还原糖的含量自下而上逐节段依次增加。不论那一个节段,还原糖的含量皆随株龄的增加而下降,蔗汁重力纯度则随株龄的增加而提高?更多还原

【Abstract】 Sucrose accumulates during the growth of Sugarcane. Under conditions of Low temperature, dry climate, and in older plants, suerose accumulation proceeds more quickly. Sucrose accumulation in cane plants begins from the lower part and proceeds toward the top internodes of the stalk. Sucrose accumulation correlated with organic dry matter accumul-tion in the stalks. At maturity,glucose content decreased gradually and the weight purity of cane juice increased. These were the img,rtant characters of maturity of sugarcane.更多还原