腐植酸钾促进凤梨苗生长应用研究

Application Research on Potassium Humate in Promoting Pineapple Seedlings Growth

针对缺乏腐植酸钾对凤梨生长的应用研究现状,采用砂培试验,设计腐植酸钾施用低(1.7%)、中(4.2%)、高(8.3%)3个水平,以河砂处理为对照,分析腐植酸钾对凤梨植株生长潜力的影响。试验结果表明,腐植酸钾通过增加叶片数,改变功能叶结构,提高光合作用,促进凤梨生长;施用腐植酸钾是凤梨健康种苗培育的有效技术,腐植酸钾施用推荐值为3.3%~4.2%,研究结果可为凤梨栽培生产实践提供参考。

A pot experiment was conducted to know the effects of different potassium humate contents on the growth potential of pineapple plants with river sand as the control and three treatment levels of low(1.7%),medium(4.2%)and high(8.3%)potassium humate.The results showed that potassium humate could improve photosynthesis and promote the growth of pineapples by increasing the number of leaves and changing the structure of functional leaves.Using potassium humate was proved an effective way for the cultivation of healthy pineapple seedlings,especially within concentration of 3.3%~4.2%.The results could provide a reference for the practice of pineapple cultivation.