英德瓦德实验:揭示粗砂土中石灰化与磷肥之间的长期相互作用

IF 4.5 1区 农林科学 Q1 AGRONOMY
Ingeborg F. Pedersen, Jørgen Eriksen, Bent T. Christensen, Gitte H. Rubæk
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引用次数: 0

摘要

Jyndevad 田间试验始于 1942 年,在丹麦南部的粗砂土上进行,探索了四种施肥量(0、4、8 和 12 兆克石灰公顷-1)的效果。1944 年,这些试验与两种水平的矿物磷肥(0 和 15.6 千克磷/公顷-年-1)相结合,同时使用或不使用 156 千克矿物磷/公顷-年的高初始剂量。本研究评估了过去三十年中施用石灰和磷肥对土壤 pH 值、奥尔森磷含量和大麦产量的影响。无论是否施用石灰,每年施用钾肥都能提高大麦产量,但最佳石灰施用量每年不同。这就强调需要进行长期的田间试验,以检测施用石灰和钾对作物表现的复杂相互作用。1944 年最初的高磷剂量和每年的磷肥施用增加了土壤中的奥尔森-磷含量。pH(CaCl2) 值低于 4 的未石灰化土壤中的奥尔森-P 含量最高。现在,京德瓦德试验区的土壤磷(Olsen-P 含量:9-82 毫克 P kg-1 土壤)和 pH 值(3.6-6.9)梯度很大,为今后研究粗砂土上施用石灰和磷肥之间的相互作用提供了一个独特的研究平台。我们选取了一些利用英德瓦德试验进行的研究,以说明该试验的研究潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The Jyndevad Experiment: Revealing long-term interactions between liming and phosphorus fertilization in a coarse sand soil
The Jyndevad field experiment, initiated in 1942 on a coarse sand soil in South of Denmark, explores the effect of four liming levels (0, 4, 8 and 12 Mg lime ha−1). These were in 1944 combined with two levels of mineral phosphorus (P) fertilizer (0 and 15.6 kg P ha−1 year−1), with or without a high initial dose of 156 kg mineral P ha−1. This study assesses interactions between liming and P fertilization on soil pH, Olsen-P contents and barley yields covering the last three decades. Annual P application improved barley yield regardless of liming, but the optimal liming level differed from year to year. This emphasizes the need for long-term field experiments to detect the complex interactions between liming and P availability on crop performance. The initial high P dose in 1944 and annual P fertilization increased Olsen-P contents in soil. The unlimed soil with pH(CaCl2) values below 4 had the highest Olsen-P content. The Jyndevad Experiment now harbors wide gradients in soil P (Olsen-P contents: 9–82 mg P kg−1 soil) and pH (3.6–6.9), providing a unique research platform for future studies on interactions between liming and P fertilization on coarse sand soils. We present a selection of studies that have used the Jyndevad Experiment to illustrate the research potential of the experiment.
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来源期刊
European Journal of Agronomy
European Journal of Agronomy 农林科学-农艺学
CiteScore
8.30
自引率
7.70%
发文量
187
审稿时长
4.5 months
期刊介绍: The European Journal of Agronomy, the official journal of the European Society for Agronomy, publishes original research papers reporting experimental and theoretical contributions to field-based agronomy and crop science. The journal will consider research at the field level for agricultural, horticultural and tree crops, that uses comprehensive and explanatory approaches. The EJA covers the following topics: crop physiology crop production and management including irrigation, fertilization and soil management agroclimatology and modelling plant-soil relationships crop quality and post-harvest physiology farming and cropping systems agroecosystems and the environment crop-weed interactions and management organic farming horticultural crops papers from the European Society for Agronomy bi-annual meetings In determining the suitability of submitted articles for publication, particular scrutiny is placed on the degree of novelty and significance of the research and the extent to which it adds to existing knowledge in agronomy.
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