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用除草剂对保护性耕作采用除草剂的相对重要性美国玉米和大豆生产商的采用

Fengxia Dong¹, Laura Dodson¹, Rebecca Nemec Boehm²

¹United States Department of Agriculture, Economic Research Service, Washington, DC, United States of America.

|November 18, 2024

概括

美国农业中的保护性耕作与更高的预先出现的除草剂使用有关,特别是草甘,用于田间玉米和大豆. 这种做法是采用保护性耕作的一个关键因素,除了作物轮换和土地特征之外.

科学领域:

农业科学农业科学
环境科学环境科学
农业学是一种农业学.

背景情况:

杀草剂的使用是农业中用于杂草管理的常见做法.
保护性耕作采用和除草剂使用之间的关系一直是美国长期存在的政策问题.
之前的研究并没有一贯地将保护性耕作与更高的除草剂使用联系起来,这是由于未解决的混因素.

研究的目的:

分析美国田间玉米和大豆生产者的保护性耕作和除草剂使用趋势.
通过使用一种新型建模方法,评估除草剂在保护耕作采用中的重要性.
考虑其他影响保护耕作决策的农业和经济因素.

主要方法:

利用了美国农业部最近的全国代表性数据.
采用标准的经济技术来描述和比较趋势.
应用了分类和回归树 (CART) 模型来评估预测因素对保护耕作的重要性.

主要成果:

在出现前,除草剂的使用在保护性耕作中显著增加,用于田间玉米和大豆.
在保护和传统耕作之间,在出现后的除草剂使用中没有发现一致的显著差异.
预先出现的草甘应用是保护性耕作采用田间玉米 (2016) 和大豆 (2018) 的最强有力的预测因素.
农作物旋转,高度侵蚀的土地,地区和农场规模也成为重要预测因素.

结论:

除草剂的使用,特别是出现前的草甘,在美国主要田间作物采用保护性耕作方面发挥了关键作用.
采用保护性耕作的决定是复杂的,并受到除草剂做法,作物轮换,土地特征和农场管理的结合的影响.
这些发现强调了了解除草剂在可持续农业实践中的作用的重要性.

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