通过决策支持系统将杂草生物多样性和除草剂强度联系起来。

IF 3.8 1区农林科学 Q1 AGRONOMY

Pest Management Science Pub Date : 2025-07-29 DOI:10.1002/ps.70019

Friederike de Mol, Robert Fritzsche, Bärbel Gerowitt

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引用次数: 0

摘要

背景：除草剂的广泛使用是耕地杂草生物多样性下降的原因之一。本研究旨在探讨(1)决策支持系统推荐的除草剂决策是否比标准推荐的除草剂决策增加了杂草物种多样性；(2)高杂草物种多样性是否降低了除草剂强度，从而有助于提高多样性。在两年多的时间里，通过15次田间试验收集了德国东北部冬小麦田间杂草和除草剂使用情况的数据。5个处理在除草剂施用决策方式上存在差异，其中2个处理根据决策支持系统的建议进行决策。结果在希尔系列生物多样性指标中，未经处理的对照地的物种丰富度最高，为13.5 m-2 /田，但优势结构逐渐强于处理样地（等效物种丰富度为1.7 ~ 2.0 m-2）。决策支持系统中作为除草剂强度度量指标的处理频次指数最低，可靠性较低（1.07）。以秋季杂草多样性和密度、夏季杂草多样性和除草剂强度为中介变量的路径模型显示，在所有处理中，Shannon多样性对除草剂强度的影响均显著降低。只有决策支持系统对低杂草密度有显著降低除草剂强度的反应。结论提高杂草种类多样性有助于降低除草剂使用强度，具有一定的生态和经济价值。除草剂应用决策支持系统应具有其他目标功能，而不是降低成本以促进生物多样性。©2025作者。由John Wiley & Sons Ltd代表化学工业协会出版的《害虫管理科学》。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Weed biodiversity and herbicide intensity as linked via a decision support system

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Weed biodiversity and herbicide intensity as linked via a decision support system

BACKGROUND

Extensive herbicide use is one reason for the declining biodiversity of arable weeds. This study aimed to investigate (i) whether herbicide decisions recommended by a decision support system increase the weed species diversity compared to standard recommendations, and (ii) whether high weed species diversity reduces herbicide intensity, which in turn contributes to higher diversity. Data on weeds and herbicide applications in winter wheat fields in north-eastern Germany were collected in 15 field trials over 2 years. Five treatments differed in the way of decision-making for herbicide application, including two treatments according to recommendations of decision support systems.

RESULTS

Along the Hill's series biodiversity metrics, the untreated control had the highest species richness (13.5 m⁻²) per field but showed increasingly stronger dominance structures than the treated plots (equivalent species richness: 1.7–2.0 m⁻²). The treatment frequency index as a metric for herbicide intensity was significantly lowest in the decision support system with low reliability (1.07). Path models, including weed diversity and density in autumn, weed diversity in summer, and herbicide intensity as a mediating variable showed a significant decreasing effect of Shannon diversity on herbicide intensity in all treatments. Only the decision support systems reacted to low weed densities with a significant reduction of the herbicide intensity.

CONCLUSION

Higher weed species diversity contributes to lower herbicide intensity, which is ecologically and economically valuable. Decision support systems for herbicide application should have other target functions than cost reduction for contributing to biodiversity. © 2025 The Author(s). Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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来源期刊

Pest Management Science 农林科学-昆虫学

CiteScore

7.90

自引率

9.80%

发文量

553

审稿时长

4.8 months

期刊介绍： Pest Management Science is the international journal of research and development in crop protection and pest control. Since its launch in 1970, the journal has become the premier forum for papers on the discovery, application, and impact on the environment of products and strategies designed for pest management. Published for SCI by John Wiley & Sons Ltd.