连续施用硫酸钾镁肥对柑橘的效应

Effect of continuous application of potassium magnesium sulphate on fresh fruit yield and quality of Poon-Kan

以柑为试验材料,采用短期定位试验,研究了施用硫酸钾镁肥料对柑效应的影响。结果表明,施用各种钾肥对柑鲜果产量有极显著增产效果,且能提高叶片中钾素含量。在施用氮磷肥基础上,施用硫酸钾镁肥的增产效应明显,经济效益最佳。在本试验中,与施硫酸钾相比较,施用氯化钾的果实Vc含量略有下降,可滴定酸含量略有提高。

The paper dealt with the effect of potassium magnesium sulphate fertilizer on flesh fruit yield and quality of the Poon- Kan was studied in Poon- Kan garden using ten years old＇s Poon- Kan trees as experimental material. The results showed that the application of potassium magnesium sulphate fertilizer, potassium chloride, potassium sulphate increased significantly the flesh fruit yields of Poon- Kan, and enhanced the potassium contents in leaves. A obvious yield increase efficiency and high benefits with the application of potassium magnesium sulphate fertilizer was shown on the basis of nitrogen and phosphate fertilization. In this experiment, Vc content in the fruit was slightly decreased and slightly increased titratable acid content in the treatment with potassium magnesium sulphate fertlizer.