热带作物学报2012，Vol.33Issue(12)：2171-2175,5.DOI:10.3969/j.issn.1000-2561.2012.12.010
供钾水平对香蕉苗期生长和钾素吸收积累的影响
Influence of Different Potassium Concentrations on Banana Growth and K Uptake at Seedling Stage
摘要
Abstract
The water culture experiment with 16 potassium concentrations was conducted to investigate the effect of different potassium (K)concentrations on banana growth and K uptake. The results showed that when K concentration in solution was below 225 mg/L, the dry mass accumulation and K content and uptake of banana were increased with the increased K concentration. When K concentration was 225-520 mg/L, the dry mass accumulation and K content and uptake of banana was not significantly increased with the increased K concentration. When K concentration was 600 mg/L, the dry mass accumulation and K uptake of banana was reduced. The relationship between relative dry mass of banana and K concentration in solution was y=-0.000 401 x2+0.307 6x +45.676 (R2=0.881**)And the critical K concentration in the solution for K deficit plants was 228 mg/L, and appropriate range of K concentration in the solution was 228-539 mg/L.关键词
香蕉/钾浓度/钾吸收/临界值Key words
Banana/ Potassium concentration/ Potassium absorption/ Critical value分类
农业科技引用本文复制引用
谢如林,余小兰,黄金生,黄美福,周柳强,谭宏伟..供钾水平对香蕉苗期生长和钾素吸收积累的影响[J].热带作物学报,2012,33(12):2171-2175,5.基金项目
广西自然科学基金(No.2011GXNSFA018072) （No.2011GXNSFA018072）
广西农科院发展基金(No.201005Z,2011JM12) （No.201005Z,2011JM12）
公益性行业(农业)科研专项(No.201003014-2) （农业）
国家自然科学基金重点项目(No.U1033004) （No.U1033004）
国际植物营养研究所(IPNI)中国项目部. （IPNI）
