复合肥用量对芒果产质量及经济效益的影响

为了筛选出适合海南芒果生产的复合肥最佳用量,采用田间试验的方法,进行芒果氮磷钾复合肥不同用量追肥试验。结果表明:花芽分化前和果实膨大期均施用复合肥420kg/hm2的处理产量最高为12.46t/hm2,较不施肥处理增产17.3%;植株N、K含量显著提高,果实营养品质得以改善,可溶性固形物提高10.2%,固酸比提高17.8%,纯收益最高。芒果园推荐施肥方案:NPK复合肥追肥用量为840kg/hm2,50%花芽分化前施用,50%果实膨大期追施。

Effects of Different Compound Fertilizer Amount on Yield,Quality and Economic Benefit in Mango

The effects of different compound fertilizer amount on yield, quality and economic benefit of mango were studied by a field test to screen the optimum application amount of compound fertilizer for mango in Hainan.Results: The yield of mango under applying 420 kg/hm2 compound fertilizer before flower bud differentiation and 420 kg/hm2 compound fertilizer at fruit expanding stage is the highest (12.46 t/hm2), 17.3% higher than CK(without applying compound fertilizer).Applying compound fertilizer can significantly increase N and K content of mango plants and improve nutrient quality of mango fruits.The soluble solid content and soluble solid/titratable acid ratio of mango increase by 10.2% and 17.8%.The net income of mango under applying 420 kg/hm2 compound fertilizer before flower bud differentiation and 420 kg/hm2 compound fertilizer at fruit expanding stage is the highest.In conclusion, the suitable recommend fertilizer application schedule for mango production includes applying 420 kg/hm2 compound fertilizer before flower bud differentiation and 420kg/hm2 compound fertilizer at fruit expanding stage.