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首页> 外文期刊>Revista Brasileira de Fruticultura >Parcelamento da aduba??o NPK em abacaxizeiro
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Parcelamento da aduba??o NPK em abacaxizeiro

机译：菠萝氮磷钾肥的分期付款

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摘要

A field experiment was carried out on an Alfisol in S?o Paulo State, Brazil, with the objective of investigating the effects of split application of NPK fertilizer on pineapple ('Smooth Cayenne') yield and fruit quality. Six patterns of split application of fertilizers were tested as follows: T1 (control) ? N and K rates split in four applications (60 kgha1 of N and K2O in Jun/95; 120 kgha1 of N and K2O in Nov/95; 250 kgha1 of N and K2O in Jan/96 and 120kgha1 of N and K2O in Mar/96); T2 ? N and K rates split in four applications (60 kgha1 of N and K2O in Jun/95; 120 kgha1 of N and K2O in Nov/95; 160 kgha1 of N and K2O in Jan/96 and 210kgha1 of N and K2O in Mar/96); T3 ? N and K rates split in three applications (90 kgha1 of N and K2O in Jun/95; 180 kgha1 of N and K2O in Nov/95 and 280 kgha1 of N and K2O in Jan/96); T4 - N and K split in five applications (60 kgha1 of N and K2O in Jun/95; 110 kgha1 of N and K2O in Nov/95; 160 kgha1 of N and K2O in Jan/96; 110kgha1 of N and K2O in Mar/96 and 110 kgha1 of N and K2O in May/96); T5 - differed from T1 due to five applications of N; all P fertilizer was applied at planting (mai/95) in these treatments (T1 to T5); T6 - differed from T1 due to split application of P (50% at planting and 50% in Jan/96). Fruit weight and quality were influenced by split application of N and K. Differently, split application of P has no effect on fruit production. The split of N rate in five applications produced heavier fruits, but the effect of late application of N on fruit quality was negative due to a decrease of soluble solids content.
机译：在巴西圣保罗州的Alfisol上进行了田间试验，目的是调查NPK肥料的分次施用对菠萝（“平滑卡宴”）产量和果实品质的影响。测试了六种肥料的分份施用方式：T1（对照）？氮和钾的比率分为四个应用程序（95/6/9氮和钾2 kgha1的剂量; 95/11/9氮和钾2kg2的施用量120 kgha1; 96/1月氮和钾的250kgha1含量; 3月/ 3氮和K2O的施用量120kgha1 96）; T2？氮和钾的比率分为四个应用程序（95/6/9氮和钾2 kgha1的剂量; 95/11/9氮和钾2kg120的臭味; 96年1月氮和钾的160kgha1的含量; 3月/ 3氮和K2O的含量210千克·ha1 96）; T3？氮和钾的比率分为三个应用（95/6月的N和K2O为90 kgha1; 95/11月的N和K2O为180 kgha1和96/1月的N和K2O为280 kgha1）; T4-N和K分为五种施用方式（95 / Jun / 95 kgha1的N和K2O; 95/11/95 nl和K2O的110 kgha1; 96 / Jan / 96中N和K2O的160 kgha1; 3月N和K2O的110kgha1 96年5月/ 96和110 kgha1的N和K2O）; T5-由于N的五个应用，因此与T1不同;在这些处理（T1至T5）中，所有磷肥均在种植时（mai / 95）施用; T6-与T1不同，这是由于P的分开施用（播种时为50％，96年1月为50％）。氮和钾分开施用对果实重量和品质有影响。不同的是，磷分开施用对果实产量没有影响。在五次施用中氮比例的分配产生了较重的果实，但是由于可溶性固形物含量的减少，后期施用氮对果实品质的影响为负。

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