在不同的地中海作物轮换中,Oribatid虫用动物便受精
Àngela D Bosch-Serra1, M Gabriela Molina2, Elena González-Llinàs3
1Department of Chemistry, Physics and Environmental and Soil Sciences, University of Lleida, Av. Alcalde Rovira Roure 191, Lleida, E-25198, Spain. angela.bosch@udl.cat.
Experimental & applied acarology
|June 20, 2023
概括
在地中海农业生态系统中,Oribatid虫可以表明土壤的健康状况. 它们的丰富性和物种构成标志着不同肥料和作物种植实践下的土壤退化.
科学领域:
- 土壤科学 土壤科学
- 生态生态学 生态生态学
- 农业科学 农业科学
背景情况:
- 不可持续的土壤管理导致土壤退化,需要可靠的指标进行影响评估.
- 由于它们的群体稳定性,Oribatid虫是土壤干扰的潜在早期预警指标.
- 在农业实践中评估土壤健康需要了解土壤动物的作用.
研究的目的:
- 为了评估oribatid虫作为生物指标,在地中海气候下可持续的农业实践.
- 为了测试营养和作物管理影响oribatid虫种群的假设,反映土壤退化.
- 为了识别特定的或类物种或社区结构,表明土壤健康或干扰.
主要方法:
- 在干燥的地中海气候下进行实地研究,并进行长期受精实验 (12年).
- 在三种受精处理 (猪,奶牛,矿物) 和作物系统 (两作物轮换,玉米单一栽培) 中采样 (18种,1974个个体).
- 对有机物应用率和先前作物相比,形虫的丰度,物种组成和占主导地位的分析.
主要成果:
- 与矿物化肥或对照相比,在有机化肥 (猪和奶牛) 时,Oribatid的丰度增加了.
- 特定有机物应用率 (猪泥≥2 Mg OM ha−1 yr−1,奶牛肥≥4 Mg OM ha−1 yr−1) 与丰度增加相关.
- 在有机受精的小麦下,性繁殖的Oribatula excavata占主导地位,而在扰乱的玉米单一栽培中,共生物种 (Tectocepheus sarekensis,Acrotritia ardua americana) 主导.
结论:
- 在地中海农业条件下,Oribatid虫的数量和物种组成是土壤健康的有效生物指标.
- 有机化肥,特别是以更高的速度,促进了有益的虫虫社区.
- 转向特定的原性或类物种的转变表明土壤退化进展,特别是在单一种植系统中.
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