较高的根区P和营养度不会增加产量或医用大麻中的大麻素
Julie A Hershkowitz1, F Mitchell Westmoreland1, Bruce Bugbee1
1Crop Physiology Laboratory, Department of Plants, Soil, and Climate, Utah State University, Logan, UT, United States.
Frontiers in plant science
|March 7, 2025
概括
过多的 (P) 和高的营养水平不会改善医用大麻的产量或质量. 大麻植物能够耐受高度的营养物质而不会产生不良影响,这表明目前的施肥做法可能过度.
科学领域:
- 农业科学 农业科学
- 植物生理学 植物生理学
- 环境科学 环境科学
背景情况:
- 医用大麻合法化的增加引发了人们对过度施肥对环境的影响的担忧.
- 营养溶液中 (P) 含量升高是大麻种植的一个特别关注的问题.
- 优化营养投入对于可持续的农业实践至关重要.
研究的目的:
- 研究 (P) 度增加对医用大麻产量和质量的影响.
- 为了检查在水培系统中增加的P和营养溶液度 (电导率) 的相互作用效应.
- 确定医用大麻的最佳营养管理策略,以防止过度受精.
主要方法:
- 利用封闭系统的水栽培来精确控制和监测根区营养度.
- 应用了不同水平的 (15-90 mg/L) 和电导率 (2-4 mS/cm).
- 叶子和花组织中的量化P度和评估的整体产量和质量指标.
主要成果:
- 增加P输入从15到90毫克/升,使叶子P翻了一番,花P增加了70%,而不会影响产量或质量.
- 营养溶液度 (EC) 的翻倍增加了营养积累,但没有提高产量或质量.
- 在补充溶液中减少P,在收获时溶液中的P显著降低,但产量和质量仍然不受影响.
结论:
- 医用大麻可以耐受高度的营养物质,包括高含量.
- 过多的和总体上高的营养度都不能改善大麻的产量或质量.
- 目前用于医用大麻的施肥实践可能不必要地高,造成环境风险而没有农业效益.
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