甘蔗糖业Issue(6)：18-21,4.
低pH条件下钾对液培甘蔗幼苗生长及根系形态的影响
Effects of Different Potassium Levels on Growth and Root Morphological Traits of Sugarcane Seedling under Low pH Hydroponic Culture
摘要
Abstract
A hydroponic experiment was conducted to investigate the effect of different potassium levels (0.1, 3 and 6 mmol/L) on the growth and the root morphology of sugarcane seedling under low pH. The results showed that, under 0.1 mmol/L potassium level in the low pH (4.0) of nutrient solution, the dry matter and the plant height decreased; the total length, average diameter, total average superficial area and total volume of the roots significantly decreased; the root activity and potassium content in plant also decreased, and the root-shoot ratio increased. The seedling returned to normal growth when the potassium level increased to 3 mmol/L, while both the total length and the total volume decreased at 6 mmol/L potassium level, which were harmful to the root normal growth.关键词
低pH/甘蔗/钾/根系形态/液培Key words
Lower pH/Sugarcane/Potassium/Root morphology/Hydroponic culture分类
农业科技引用本文复制引用
陈迪文,黄莹,卢颖林,敖俊华,周文灵,黄振瑞,江永..低pH条件下钾对液培甘蔗幼苗生长及根系形态的影响[J].甘蔗糖业,2016,(6):18-21,4.基金项目
广东省自然科学基金(2016A030313416)；广东省科技发展专项资金项目(2014B070705002)；国家现代农业产业技术体系甘蔗专项(CARS-20-3-1) （2016A030313416）
