摘要
从卷心1周后开始每隔7天取样调查春大白菜‘菊锦’生长和营养品质的动态变化,结果表明:卷心2周后叶球高度就不再增加,4周后叶球周长达到最大值;外叶叶片面积和外叶总面积在4周时达到最大值,而外叶叶柄面积在卷心1周后基本保持恒定。从外到内,叶片停止伸长生长的时间逐渐延迟。外叶、内叶、根的鲜重和干重逐渐增加,卷心4周后达到最大值,但是外叶增加幅度较小。从卷心开始,外叶、内叶、根的干物质含量均呈下降趋势,外叶在2周后、内叶和根在3周后不再降低;净菜率则呈增加趋势,卷心开始3周后达到最大值。蛋白质、总糖含量以叶片高于叶柄,而氨基酸、可溶性糖含量相反,以叶柄高于叶片。内叶的营养物质含量随着发育进程降低或保持不变,而心叶营养物质含量均呈升高趋势。
Spring Chinese cabbage （cuhivar to investigate the developmental changes in ＇Jujin＇） was sampled at 7-day intervals from 7 days after bailing growth characteristics and nutritional quality. The results showed that the ball height increased until 2 weeks after bailing. Ball circumference, blade area of outer leaf, and total area of outer leaf reached maximal value 4 weeks after balling, while the petiole area of outer leaf remained unchanged 1 week after balling. The more inner of the leaf located in the ball, the later the leaf ceased elongation growth. The fresh and dry weight of the outer leaf, inner leaf and root increased until 4 weeks after bailing. The dry matter percentage of outer leaf, inner leaf and root decreased gradually, and stopped decreasing after 2, 3, 3 weeks after bailing, respectively. Net yield increased until 3 weeks after bailing. The leaf blade contended more protein and total sugar than the petiole, and less amino acid and soluble sugar. The nutrient content in the outer and inner leaf decreased or kept stable. In the central leaf, all nutritional substance tested increased with development.
出处
《中国农学通报》
CSCD
北大核心
2010年第11期231-235,共5页
Chinese Agricultural Science Bulletin
关键词
春大白菜
产量
营养品质
动态变化
spring Chinese cabbage
yield
quality
developmental change
