The relationship between potassium absorption and root parameters in root morphology and physiology among various genotypes of ramie (Boehmeria nivea L ) were studied by soil pot culture and solution culture.
结果表明 :吸钾能力强的基因型具有的特点是根量多 ,特别是细根多 ;根系总吸收面积及活跃吸收面积大 ;根系的吸收容量阳离子交换量 CEC较高 ;钾吸收动力学最大吸钾速率 Vmax较高 ,而米氏常数 Km相对较
Using a liquid culture system, in which a nutrient solution containing 1 mmol/L K was supplied to a 25 mm or 40 mm segment of the primary root while the remainder of the root system received a K free nutrient solution, effects of a local supply of K on root growth and K uptake rate were studied in maize (Zea mays L.
试验开始第３ 天起，钾供应区的钾吸收速率明显加快。