有证据表明热层臭氧对孟加拉国大米生产的影响
Michael Frei1, Md Ashrafuzzaman2, Hans-Peter Piepho3
1Department of Agronomy and Crop Physiology, Justus-Liebig-University, Giessen, Germany.
The Science of the total environment
|November 18, 2023
概括
热带层臭氧显著降低了孟加拉国的大米产量. 用乙烯二尿素 (EDU) 保护大米作物提高了产量超过10%,突出了对耐臭氧品种和污染控制的需要.
科学领域:
- 环境科学 环境科学
- 农业学是一种农业学.
- 植物生理学 植物生理学
背景情况:
- 孟加拉国面临着高水平的热层臭氧影响农业.
- 臭氧对大米生产和粮食安全的影响尚不清楚.
研究的目的:
- 评估热层臭氧对孟加拉国大米生产的影响.
- 识别耐臭氧米品种,并评估臭氧保护剂的有效性.
主要方法:
- 在孟加拉国四个受污染的水种植场地进行了实地实验,时间长达三个作物季节 (2020-2022年).
- 为了量化臭氧压力影响,种植了20种带有和没有乙烯二尿素 (EDU) 的米品种.
- 测量包括谷物产量,植被指数 (NDVI,Lic2,PRI) 和口腔导电.
主要成果:
- 臭氧显著降低了大米谷物的产量,EDU的应用平均增加了10.4%的产量.
- EDU有效地区分了耐臭氧和敏感品种,耐臭氧类型的产量增加了21%.
- 臭氧压力对叶绿素含量 (NDVI),叶绿素:胡卜素比率 (Lic2) 和叶绿素循环颜料 (PRI) 有负面影响.
- 随着EDU治疗,口腔导电量增加了约10%,表明植物生理功能得到改善.
结论:
- 热带层臭氧对孟加拉国大米生产构成严重威胁.
- 培育耐臭氧米品种和实施减轻空气污染的战略对于粮食安全至关重要.
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