浸水对微生物活动的影响,土壤营养物质的可用性,营养物质的吸收,以及耐受性和敏感性洋基因型的产量
Amol R Pawar1, Sushant Sukumar Patil1, Mayur B Patil1
1Department of Agronomy, School of Agriculture, Lovely Professional University, Phagwara, Punjab, India.
Frontiers in plant science
|December 1, 2025
概括
季风降雨的变化导致水浸压力,损害洋作物. 选择耐受性洋基因型和使用升床有效地减轻这些对产量和土壤健康的负面影响.
科学领域:
- 农业科学 农业科学
- 土壤科学 土壤科学
- 植物生理学 植物生理学
背景情况:
- 季风降雨的变化给洋 (Allium cepa) 种植带来了重大挑战,特别是由于粘土土壤中的水浸压力.
- 浸水会对土壤通风,微生物群落,营养循环,最终影响作物表现和产量产生负面影响.
研究的目的:
- 评估浸水对不同洋基因型土壤物理性质,微生物活性,营养物质的可用性和营养物质吸收的影响.
- 确定耐受浸水压力的洋基因型,并评估升床种植对减轻这些影响的有效性.
主要方法:
- 在一个实地实验中,使用了带平面布局的分割图案设计,在浸水条件下比较八种洋基因型 (两种耐受性,六种敏感性).
- 监测了土壤的物理性质,微生物生物质碳,酶活动 (脱酶,尿素酶,酸酶),营养含量,营养吸收和球泡产量.
主要成果:
- 浸水显著增加了土壤体密度,降低了透率.
- 在浸水条件下,微生物活动和基本宏观和微量营养素的可用性大幅减少.
- 洋基因型 加入1666和Bhima深红色 (BDR) 选择显示出更大的耐受性,与敏感基因型相比,产量减少较小. 升床进一步提高了耐受性基因型的表现.
结论:
- 对于耐水浸的基因型选择对于在季风气候下保持洋产量至关重要.
- 升床种植是一种可行的策略,可以改善土壤条件,并在水浸压下提高洋生产率.
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