小麦对过去产量和降雨量的氮反应:提高最佳氮施用的一步

IF 2.3 4区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Agricultural & Environmental Letters Pub Date : 2022-01-22 DOI:10.1002/ael2.20061
Brian E. Mills, B. Wade Brorsen, Emilio Tostão, Jon T. Biermacher
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引用次数: 0

摘要

要使精确的氮(N)应用明显有利可图,可能需要结合多种信息来源。低成本的信息来源包括降雨量和前一年的产量。本文使用了冬小麦(Triticum aestivum L.)对氮肥反应的长期实验数据,以及俄克拉荷马大学中网气象站的降雨数据。目标是确定氮的最佳表层水平。使用回归来确定农民施用氮的边际产品上一年的产量和降雨量。滞后产量和降雨量的信息使利润增加2.79公顷-1。因此,滞后产量和降雨量可能是一个低成本的信息来源,可以添加到其他信息来源中,以实现广泛采用精确N应用的目标。
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Wheat nitrogen response conditional on past yield and rainfall: A step in improving optimal nitrogen applications

Making precision nitrogen (N) application clearly profitable will likely require incorporating multiple sources of information. Low-cost sources of information include rainfall and the previous year's yield. This paper uses data from a long-term experiment on the response of winter wheat (Triticum aestivum L.) to N fertilizer, as well as rainfall data from the University of Oklahoma's Mesonet weather station. The goal was to determine optimal topdress levels of N. A regression was used to determine the previous year's yield and rainfall on the marginal product of farmer-applied N. Information from lagged yield and rainfall increases profit by $2.79 ha–1. Therefore, lagged yield and rainfall could be a low-cost information source to add to other sources of information to achieve the goal of widespread adoption of precision N application.

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CiteScore
3.70
自引率
3.80%
发文量
28
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