复合肥用量对芒果产质量及经济效益的影响

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

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。

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 420kg/hm^2 compound fertilizer before flower bud differentiation and 420 kg/hm^2 compound fertilizer at fruit expanding stage is the highest（12.46t/hm^2）,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% and17.8%.The net income of mango under applying 420 kg/hm^2 compound fertilizer before flower bud differentiation and 420kg/hm^2 compound fertilizer at fruit expanding stage is the highest.In conclusion,the suitable recommend fertilizer application schedule for mango production includes applying 420kg/hm^2 compound fertilizer before flower bud differentiation and 420kg/hm2 compound fertilizerat fruit expanding stage.