聚γ-胺酸改善了生物固化,水生产率,以及棉花/大豆间作物中的酸盐残留物
Bo Jing1, Wenjuan Shi1, Lu Liu1
1State Key Laboratory of Eco-Hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an, China.
Journal of the science of food and agriculture
|June 28, 2023
概括
在棉花/大豆杂交作物中,优化应用聚--胺酸 (γ-PGA) 可增强生物固和水-生产率. 理想的0.22% γ-PGA率最大限度地提高了作物产量和资源使用效率.
科学领域:
- 农业科学 农业科学
- 土壤科学 土壤科学
- 农业学是一种农业学.
背景情况:
- 众所周知,聚-γ-胺酸 (γ-PGA) 可以改善作物生长和土壤质量.
- 在豆类/非豆类杂交作物系统中,g-PGA的最佳应用率仍未确定.
- 这项研究研究了棉花/大豆交叉作物系统中的γ-PGA效应.
研究的目的:
- 在棉花/大豆杂交作物系统中确定γ-PGA的最佳应用率.
- 评估γ-PGA对生物固化的影响 (BNF).
- 评估γ-PGA对水-N生产率和酸盐分布的影响.
主要方法:
- 使用五种不同的γ-PGA应用率 (0%,0.1%,0.2%,0.3%,0.4%) 进行了一项实验.
- 测量了棉花和大豆的增长指标.
- 稳定的N同位素方法用于评估BNF.
- 分析了水-N的生产力和酸盐的分布.
主要成果:
- 作物生长指标 (植物高度,茎直径,叶面积,根生物质,根长度) 达到0.2% (P2) 和0.3% (P3) 的高峰.
- γ-PGA显著增强了大豆的BNF,在P2率下,来自大气的N (Ndfa) 达到61.94%.
- 与对照组相比,在P3处理中,水生产率 (WP) 和N部分因子生产率 (NPFP) 分别增加了43.86%和23.80%.
- 酸盐残留物缓解显示,对增加的γ-PGA率有非线性反应.
结论:
- 在棉花/大豆杂交作物中,最大限度地提高产量和水-生产率的最佳γ-PGA应用率约为0.22%.
- γ-PGA的应用积极影响BNF和资源利用效率在交叉作物系统.
- 进一步的研究可以完善用于可持续农业的γ-PGA应用策略.
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