玉米-大豆交叉种植改善了玉米的生长特征,通过增加土壤营养素和减少植物病原体丰度
Meiyu Liu1,2, Huicheng Zhao1
1Key Laboratory of Agricultural Water Resources, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, China.
Frontiers in microbiology
|December 15, 2023
概括
玉米-大豆交叉作物通过改善土壤微生物和减少病原体来提高作物产量和营养使用. 这种农业实践通过更好的土壤营养物质,特别是-,增加了玉米生物量.
科学领域:
- 农业科学 农业科学
- 土壤微生物学 土壤微生物学
- 农业学是一种农业学.
背景情况:
- 众所周知,玉米和大豆的交叉作物可以提高作物产量和营养使用效率.
- 肥率对玉米根球微生物群落和杂交作物系统中的病原体丰富性的影响尚不清楚.
研究的目的:
- 调查玉米-大豆杂交作物的不同肥率对玉米根球微生物群落的影响.
- 分析杂交作物,肥,土壤特性,微生物群落和玉米生长特征之间的关系.
主要方法:
- 在玉米-大豆交叉作物系统中进行不同肥率的实地实验.
- Illumina NovaSeq测序用于分析玉米根球土壤中的细菌和真菌群体.
- 评估玉米生长特征,土壤物理化学特性和土壤酶活性.
主要成果:
- 间作物和肥处理显著改变了土壤微生物的多样性,结构和功能.
- 部分最小平方路径建模 (PLSPM) 表明,土壤营养物质,特别是NH4+-N,对玉米生物量产生了积极的影响,杂交作物通过土壤营养物质间接增强了生物量.
- 间作物减少了植物病原体的相对丰富性,特别是减少了Trichothecium roseum与单一作物相比.
结论:
- 玉米-大豆杂交作物通过增强土壤微生物群落和改善玉米生长,有利于农业生产.
- 优化肥率与杂交作物相结合,可以进一步改善土壤健康和作物生产率.
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