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为研究培养液氮浓度对高粱叶蛋白质生产速度(PPR)和蛋白质各组分数量的影响,探讨蛋白质组分与光合强度之间的关系,进行高粱水培试验。在50ppmN以内,干物质量、质白质量、叶面积、光合强度等均随N浓度的上升而增加;在50～250ppmN之间,均较恒定。光合强度与叶蛋白质各组分均呈正相关,其中以叶绿体蛋白的作用较为强烈。随培养液N浓度上升,蛋白质生产速度提高,其中又以干物质的蛋白质含量(PN％)的影响较明显。当全叶蛋白质含量超过6.5毫克N/分米~2时,干物质产量不再提高.主要是蛋白质产量增加。
In order to study the effect of liquid nitrogen concentration on the protein production rate (PPR) and the amount of protein components in sorghum leaves, the relationship between protein components and photosynthetic rate was studied and the sorghum hydroponics experiment was conducted. Within 50ppmN, dry matter mass, white matter mass, leaf area, photosynthetic intensity and so on increased with the increase of N concentration; between 50 ~ 250ppmN, were more constant. Photosynthetic intensity and leaf protein components were positively correlated, of which the role of chloroplast protein is more intense. With the increase of N concentration in culture medium, the production rate of protein increased, and the effect of protein content of dry matter (PN%) became more obvious. When the total leaf protein content exceeds 6.5 mg N / dm 2, dry matter production no longer increases, mainly due to increased protein production.