土壤类型通过调节玉米生长和营养含量来调节Spodoptera frugiperda的发展和昆虫杀虫剂易感性
Shi-Wen Deng1, Mohammed Esmail Abdalla Elzaki2, Wei Liang1
1Guangdong Engineering Technology Research Centre of Modern Eco-agriculture and Circular Agriculture, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China; Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, China.
Pesticide biochemistry and physiology
|February 2, 2026
概括
土壤类型通过改变玉米营养,显著影响秋季军的发展和抗虫剂的耐药性. 更健康的土壤会导致更大,更耐药的害虫,这对于综合性害虫防治战略至关重要.
科学领域:
- 农业昆虫学 农业昆虫学
- 土壤科学 土壤科学
- 虫害管理 虫害管理 虫害管理
背景情况:
- 秋季军虫 (Spodoptera frugiperda) 是一个主要的入侵性害虫.
- 土壤条件影响农业生态系统,但它们对通过宿主植物对害虫杀虫剂敏感性的影响尚不清楚.
研究的目的:
- 调查不同类型的土壤如何影响玉米生长和营养.
- 评估后续对秋季军虫发育和对lambda-cyhalothrin敏感性的影响.
主要方法:
- 玉米种植在三种土壤类型中:红,肉和黑土.
- 秋季军幼虫在这些土壤中的玉米上被养,并测量了它们的发育,生存和食物消化能力.
- 确定了对兰巴-甲素的杀虫剂敏感性 (LC50).
- 使用了包括回归,结构方程建模 (SEM) 和随机森林建模在内的统计分析.
- 氨基酸补充实验确定了关键的营养因素.
主要成果:
- 在肉和黑色土壤中种植的玉米与红色土壤相比,显示出增长和营养水平的提高.
- 食来自较丰富土壤的玉米的幼虫的生存率更高,食物消化能力更好,幼虫阶段更长,成年寿命更短.
- 幼虫体重显著增加,对兰巴-甲的敏感性降低 (较高的LC50值).
- 氨酸和氨酸被确定为关键的营养介质.
结论:
- 土壤类型通过宿主植物的营养变化间接影响秋季军虫的杀虫剂易感性.
- 土壤属性是对秋季军虫的综合害虫管理的重要组成部分.
- 这些发现支持开发土壤特定的害虫控制策略.
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