促进临时作物多样化,以减少农药的使用
Maé Guinet1, Guillaume Adeux2, Stéphane Cordeau2
1Agroécologie, INRAE, Institut Agro, Univ. Bourgogne, Univ. Bourgogne Franche-Comté, F-21000, Dijon, France. mae.guinet@inrae.fr.
Nature communications
|November 17, 2023
概括
暂时的作物多样化可以通过结合低农药作物和增强自然害虫防治来降低农药使用. 然而,增加覆盖作物可能会增加除草剂的使用,需要进一步研究最佳策略.
科学领域:
- 农业科学 农业科学
- 生态生态学 生态生态学
- 农业学是一种农业学.
背景情况:
- 在农业中使用农药会给环境带来风险.
- 农作物多样化是减少对农药的依赖的一个潜在策略.
- 了解时间多样化对农药使用的影响对于可持续农业至关重要.
研究的目的:
- 评估临时作物多样化对法国农田作物系统中农药使用的影响.
- 为了区分分散在农药应用上的稀释和调节效应.
- 为了确定农作物序列,尽量减少农药投入.
主要方法:
- 分析了来自法国1334个作物系统 (DEPHY网络) 的14556个作物观测结果.
- 对16种主要作物的农药使用情况进行比较,以评估稀释效应.
- 时间性作物分类学和功能多样性对农药使用的影响的统计评估 (监管效应).
主要成果:
- 具有较高时间作物多样性的作物系统往往包括较低农药要求的作物.
- 增加了临时作物的功能和分类学多样性与减少了几个作物的总杀虫剂使用有关.
- 覆盖作物的更高频率导致了农药总使用量的增加,主要是由于更多的除草剂应用.
结论:
- 暂时的作物多样化,特别是功能和分类学多样性,可以有效地减少耕作系统中的整体农药应用.
- 覆盖作物的策略需要仔细考虑,以避免在除草剂使用中意外增加.
- 需要进一步的研究来优化作物序列,以最大限度地减少农药和整体作物系统性能.
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