来自杏仁气爆喷雾应用的向下风漂移:现场测量以帮助机械模型开发
Peter A Larbi1,2, Mae Culumber3, Harold W Thistle4
1Kearney Agricultural Research and Extension Center, University of California Agriculture and Natural Resources, Parlier, CA, USA.
Pest management science
|March 27, 2025
概括
从杏仁果园的农药喷雾漂移被用光染料测量. 数据显示漂移与距离的衰变,并确定了影响目标外移动的关键天气因素,有助于风险评估.
科学领域:
- 农业工程 农业工程
- 环境科学 环境科学
- 农药应用技术技术 农药应用技术
背景情况:
- 果园中的喷雾器的非目标杀虫剂漂流对人类健康和环境构成风险.
- 一种机械气爆喷雾漂移风险评估模型需要与真实数据进行验证.
- 杏仁果园是一个重要的农业部门,喷漂移是一个问题.
研究的目的:
- 为了从商业杏仁果园中生成喷雾漂移数据.
- 为了验证一个正在发展的机械气爆喷雾漂移风险评估模型.
- 为了告知农药风险评估和杏仁种植的最佳实践.
主要方法:
- 在一个商业杏仁果园进行了22次实地试验.
- 在935.4L/ha的光染料溶液中,使用气吹喷雾器应用了pyranine光染料.
- 使用人工喷雾采样器测量漂移沉积量,放置在相邻的田地向下风向183米处,并通过度分析.
主要成果:
- 观察到光染料的向下风沉积衰变,量化喷雾漂移.
- 估计的终端漂移量为:人工树叶在531.1米处6.0 × 10-7%,水平链在232.8米处4.0 × 10-6%.
- 确定风向,风速和大气压力是影响漂移变化的重要因素.
结论:
- 生成的数据集使客观的农药风险评估成为可能,这可能会影响加利福尼亚杏仁产业的法规.
- 数据支持喷雾应用最佳实践的确认和更新,以提高效率和环境可持续性.
- 这些发现有助于减少农业喷雾应用对环境的影响.
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