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甜菜叶片是光合作用的主要器官,是制造有机物质的工厂,因此在甜菜育种、栽培、生理、植保等诸方面的试验研究当中,甜菜叶片已成为不可缺少的重要研究项目之一,国内外已有许多这方面的报导。据试验计算,从4～10月把照射到甜菜叶子的太阳辐射能全部变成糖,则甜菜的产糖量可达20T/公顷。但实际甜菜接收的太阳辐射能只有49.0％。A.N.斯雷特柯根据试验资料提出,甜菜叶的寿命不是固定不变的,它在很大程度上取决于当年的条件。周仁喜等研究结果得出,丰产型品种的叶子1～15片寿命比高糖型品种长,但丰产型品种的第20片以后的叶子寿命比高糖型品种短。一般说来,前期叶片寿命长的品种的块根产量高,后期叶片寿命长的品种含糖率较高。我们所进行的试验研究,主要是研究了一些甜菜种和类型、不同时期的叶片生长期间的积温和日照时数,以及这些种和类型叶片中叶绿素含量、过氧化物酶同工酶的特性等。
Beet leaf is the main organ for photosynthesis and a factory for making organic matter. Therefore, beet leaf has become an indispensable and important research project in the fields of beet breeding, cultivation, physiology and plant protection. At home and abroad, There are many reports in this area. According to experimental calculations, from April to October to the beet leaf solar radiation all turned into sugar, beet sugar yield up to 20T / ha. However, the actual sugar beet receives only 49.0% of the solar radiation. A.N. Slatekeke According to the experimental data, beet leaf life is not fixed, it depends largely on the conditions of the year. Zhou Renxi and other studies have concluded that the high-yield varieties of leaves 1 to 15 pieces of longevity than the high-sugar varieties long, but the high-yield varieties of the 20th leaf life than the high-sugar varieties shorter. In general, the long-life varieties of early leaf tuber yield is high, the latter has a long lifespan of varieties with higher sugar content. The experimental research we conducted mainly studied the species and types of sugarbeet, the accumulated temperature and sunshine hours during different growth stages of leaves, the chlorophyll content and the characteristics of peroxidase isozymes in these kinds and types of leaves .