【摘要】 本文利用同位素(¹⁴CO₂)示踪法研究了稀土对糖用甜菜块根、糖分增长期光合产物分配的影响。结果表明,稀土能够促进甜菜同化CC₂.提高根冠比,改善光合产物的分配,有利于光合产物向块根运输。其队,以0.05％浓度处理的效果为最好。更多还原

【Abstract】 The effect of rare-earth elements on the distribution of photosynthate in sugar beet by isotepic(14CO2) tracing method were studied in this paper. The experimental results indicated that rare-earth elements stimulation CO2 assimilation, increase the ratio of root and tops, improve distribution of photosynthate and ctimulate transport of organic matter from leaves to roots. The treatment con-sentration with 0.05% is the most significant among all treatments with earth elements.更多还原