从玉米多危害害害虫风险角度来看,秋季军从玉米多危害害虫风险角度来看
Senait D Senay1,2, Philip G Pardey1,3, Yuan Chai1,3
1GEMS Informatics Center, University of Minnesota, Saint Paul, MN, United States.
Frontiers in insect science
|March 12, 2024
概括
非洲玉米作物由于适应气候而面临秋季军虫 (Spodoptera frugiperda) 和许多其他害虫的严重风险. 这种多危害害虫环境威胁着整个非洲大陆的作物生产.
科学领域:
- 农业昆虫学 农业昆虫学
- 气候变化的影响 气候变化的影响
- 虫害管理 虫害管理 虫害管理
背景情况:
- 秋季军虫 (Spodoptera frugiperda) 是一个重要的入侵性害虫,影响全球玉米生产.
- 气候变化正在改变害虫分布,增加作物感染的风险.
- 由于气候适合多种害虫,非洲玉米生产特别脆弱.
研究的目的:
- 为了空间评估全球气候适合秋季军虫侵袭.
- 评估非洲玉米生产的多危害害虫害风险.
- 为了告知作物管理和育种策略,以减轻害虫风险.
主要方法:
- 汇集了3175个地理标记的秋季军虫事件.
- 利用害虫生理要求和气候数据进行空间分析.
- 评估了多种害虫物种气候适应性的重叠.
主要成果:
- 几乎所有非洲玉米种植区在气候上都适合季节性秋季军虫染,其中92%支持全年害虫生存.
- 超过95%的适合秋季军虫的非洲玉米面积全年至少支持三种额外的害虫.
- 非洲玉米种植面积的很大一部分面临着9种或更多额外的害虫的风险,造成高风险的生产环境.
结论:
- 非洲玉米作物由于适合气候而面临异常高的多危害害虫风险.
- 研究结果强调,迫切需要针对非洲条件的综合性害虫防治战略.
- 复杂的害虫相互作用需要先进的作物育种和管理解决方案,以确保粮食安全.
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