摘要
对3个生菜品种的生长规律、叶球形成及品质变化的研究表明:生菜结球前生长缓慢,结球期生长迅速,特别在收获前9天内的生长量占整个叶球重的36%～61%;生菜结球期约24～30天;叶球膨大期间含水量有增加,VC 含量呈下降趋势,而粗纤维含量增加,外叶 VC 含量高于球叶,球叶 VC 含量向内逐渐下降,最外层和心叶粗纤维含量低。
Three cuhivars of cabbage lettuce were analysed for their growth laws.leaf head formation and changes of quality during their growth.Before the beginning of head for- mation,growth of lettuce was slow.and growth was rapid after the beginning of head forma- tion,growth weight of leaf head during 9 days before harvest was 36%～61% of the total amount of leaf head.Heading stage needed about 24～30 days.Water percentage of leaf head increased,VC decreased and crude fibre increased with leaf head growing.VC percentage de- creased with being close to inside leaves.Crude fibre percentage of the inside and outside head leaves was less than other leaves.
关键词
生菜
生长规律
叶球
品质
cabbage lettuce
growth law
quality
head formation
quality
