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首页> 外文期刊>The Journal of Horticultural Science & Biotechnology >Mineral nutrient management for onion bulb crops - a review
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Mineral nutrient management for onion bulb crops - a review

机译：洋葱泡沫农作物的矿物质营养管理 - 综述

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摘要

The mineral nutrient requirements of onion (Allium cepa L.) largely depend on several factors, such as cultivar, plant density, crop environment, soil fertility, fertilisation methods and managing the distributed quantity of fertiliser by using proper system of water irrigation. Production of bulbs as much as 60 tonnes ha(-1) removes108 kg ha(-1) of nitrogen (N), 21 kg ha(-1) of phosphorus (P) and 120 kg ha(-1) of potassium (K) from the field by crop harvest. Taking into account the stock of plant available mineral nutrients in the top 60 cm soil layer (onions also may effectively acquire mineral nutrients from up to 60 cm soil depth) a total supply of 120 to 140 kg N, 22-26 kg P and 150 kg K is recommended for onion production. Peak N, P, K and sulphur (S) uptake occurs during 15 to 60 days after transplanting (DAT) and fertilisers should be applied before 60 DAT for increasing bulb yield and nutrient use efficiency. Drip irrigation systems keep the nutrient solution around roots for a longer period than other systems, so it is more adapted for shallow rooted plants like onion. Adequate plant nutrition strategies involving mineral and organic fertilisers or their combinations are critical for increasing the yield of onion bulbs.
机译：洋葱（Allium CEPA L.）的矿物质营养要求主要取决于若干因素，如品种，植物密度，作物环境，土壤肥力，施肥方法，通过使用适当的水灌溉系统管理肥料的分布量。生产灯泡多达60吨HA（-1）剩余的氮（N），21kg ha（-1）磷（p）和120kg ha（-1）钾（k ）来自裁剪收获的领域。考虑到植物的储存矿物矿物质营养物质在前60厘米的土壤层（洋葱也可以有效地获得矿物营养素，从多达60厘米的土壤深度获得）总供应120至140千克，22-26千克P和150 KG K建议用于洋葱生产。在移植（DAT）和肥料之前15至60天内应在60 dAT之前施加峰值N，P，K和硫（S）摄取，以增加灯泡产量和营养利用效率。滴灌系统将营养液保持在根周围的营养溶液比其他系统更长的时间，因此它更适合洋葱如洋葱。涉及矿物质和有机肥料或其组合的适当植物营养策略对于增加洋葱灯泡的产量至关重要。

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