肯尼亚西部的农林采用及其对小农玉米生产系统土壤质量的影响
Henry Tamba Nyuma1,2, Ruth Njoroge1, Abigael Nekesa Otinga1
1Department of Soil Science, School of Agriculture & Biotechnology, University of Eldoret, Eldoret, Kenya.
PloS one
|April 8, 2025
概括
肯尼亚西部的农林采用通过减少散装密度和增加土壤有机碳,,,,硫和铜,显著改善了土壤质量. 这种可持续的做法提高了小农玉米系统的土壤肥力.
科学领域:
- 农业科学 农业科学
- 土壤科学 土壤科学
- 环境科学 环境科学
背景情况:
- 农林业是在20世纪90年代初作为土壤肥沃战略在肯尼亚西部引入的.
- 农林业对小农系统土壤质量的影响尚未得到充分研究.
- 这项研究解决了对农林业对土壤质量影响的证据需求.
研究的目的:
- 评估农林采用对土壤质量的影响.
- 在小型农户种植玉米的农林和非农林系统下比较土壤特性.
- 确定有助于改善土壤的特定树种.
主要方法:
- 在Busia和Kakamega县的农林 (90) 和非农林 (30) 土地上采集了土壤样本.
- 在0-30厘米深处,分析了土壤样本的物理化学特性.
- 进行了统计分析,以确定农林采用对土壤特性的重要性.
主要成果:
- 农林采用显著改善了土壤的物理化学特性,土壤有机碳 (75%) 和可交换 (256%) 的显著增加.
- 在农业林业下,散装密度下降了21%,这表明土壤结构有所改善.
- 像Sesbania sesban和Leucaena leucocephala这样的特定物种对多个土壤参数产生了积极的影响,而Calliandra calothyrsus则增强了卡卡梅加的土壤有机碳.
结论:
- 农林采用是提高土壤肥力和小农农业系统质量的重要策略.
- 塞斯班 (Sesbania sesban) 在改善不同地点的土壤特性方面特别有效.
- 建议进行进一步的研究,以了解营养循环和产量影响.
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