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首页> 外文期刊>Revista Brasileira de Fruticultura >Efeito de doses de NPK sobre os teores de nutrientes nas folhas e no solo, e na produtividade do maracujazeiro amarelo
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Efeito de doses de NPK sobre os teores de nutrientes nas folhas e no solo, e na produtividade do maracujazeiro amarelo

机译：NPK剂量对叶片和土壤营养物质的影响，以及黄色Maracazaze的生产率

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摘要

This work evaluated the effect of nitrogen, phosphorus and potassium fertilization on nutrient levels in the leaves of yellow passion fruit (Passiflora edulis f. flavicarpa Deg.) and on the chemical properties of the soil, in order to maximize yield and optimize fertilizer applications. The experiment was carried out from May/96 to April/98, on a Yellow Latosol, in Cruz das Almas city, State of Bahia, Brazil. It was used a randomized block design, in a fractionated factorial arrangement ? of 43, with two incompleted blocks. It was evaluated four doses of N (0, 100, 200 and 300 kg ha-1 year-1), of P2O5 (0, 80, 160 and 240 kg ha-1 year-1) and K2O (100, 300, 500 and 700 kg ha-1 year-1). Soil samples and leaves were collected at 12 and 24 months after planting. Yield was evaluated in the first and second production years. Nitrogen fertilization did not affect the N level in the leaves but decreased boron and reduced the soil pH during the second production year. Phosphorus fertilization increased, in average, only 12% of the P levels in the leaves, and 35 times in soil. Potassium fertilization increased nutrient contents in leaves and in soil over the optimum level. Maximum yield of 22 t ha-1, during two years, was obtained with application of 244 kg of N, 72 kg of P2O5 and 285 kg of K2O ha-1.
机译：这项工作评估了氮，磷和钾肥对黄色激情果实叶片的营养水平的影响（Passiflora Edulis F.Flavicarpa Deg。）和土壤的化学性质，以最大限度地提高产量和优化肥料应用。该实验从5月/ 96年到4月/ 98日，在黄色莱酚，在巴西巴赫巴哈州的克鲁兹Das Almas城市中进行。它以分级的因子安排使用随机块设计？ 43，有两个不完整的块。评估四剂N（0,100,200和300kg HA-1〜1），P2O5（0,80,160和240kg HA-1年-1）和K2O（100,300,500和700公斤HA-1年级1）。在种植后12和24个月内收集土壤样品和叶子。在第一和第二种生产年份评估产量。氮肥不影响叶片中的N水平，但硼下降，并在第二份生产年度减少土壤pH。磷肥平均增加，叶片中P水平的12％，土壤中的35次。钾肥在最佳水平上增加叶片和土壤中的营养物质。在两年内的最大产率为22ta-1，得到244kg N，72kg P 2 O 5和285kg K 2 O HA-1的施用。

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