摘要
以高产优质新品种C-20,C-2-14和地方良种芦竹青为材料,对苎麻品种间光合速率,同化物运转速率、分配方向以及品种间生物产量和纤维产量的差异进行比较,并研究不同季别生物产量和纤维产量的积累动态,结果表明:a.品种间的光合速率、同化物运转速率、分配方向、生物产量和经济产量均有显著差异;b.苎麻的光合碳代谢能力与生物产量、经济产量星正相关,两个新品种(尤其是C-20)的高光台效率是它们高产的物质基础,因而在苎麻育种中,可用光合速率,同化物运转速率和运转方向作为预测苎麻产量的综合生理指标。c.苎麻三季麻的生长发育和产量形成特点表明,苗期早施肥是获得苎麻高产的重要栽培措施之一。
With new varieties C-20, C-2-14 and Lu Zhuqing, a local impro-ved variety as experiment material, the studies result in. a. Leaf photosyntheticrate, rate of photosynthate transportation, distribution direction of photosyn-thate, biological yield and fiber yield vary obviously according to varieties;b. The capability of photosynthetic carbon-metabolism is positively correlatedwith biological yield and fiber yield, which indicates that leaf photosynthe-tic rate, rate of photosynthate transportation and distribution direction of photo-synthate may be used in ramie breeding as comprehensive physiological indexto forecast biological yield and fiber yield; c. The high leaf photosyntheticrate of new varietie, sespecially of C-20, is the material basis of their highyield; d. The characteristics of growth, development and yield formation in threegrowing seasons show that early fertilizing in seedling stage is an importantcultural measure to obtain high yield.
关键词
苎麻
品种
叶
光合作用
碳代谢
boehmeria nivea
cultivars
leaf
photosynthesis
carbon
metabolism
yield
