来源影响土壤的生物特性,但不会影响的生长
Suelen Cristina Nunes Alves1, Luciana Maria Saran1, Teresa Cristina Tarle Pissarra1
1São Paulo State University (UNESP), School of Agricultural and Veterinarian Sciences, Jaboticabal, Brazil.
Chemosphere
|March 17, 2024
概括
(Ni) 的应用会影响土壤和的特性. 虽然 (II) 酸盐减少了植物Ni,但 (III) 氧化物增加了它,根据来源和剂量不同影响了谷物产量.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 土壤科学 土壤科学
背景情况:
- (Ni) 是必不可少的,但由于土壤的可用性,在高度下可能具有植物毒性.
- 了解Ni对土壤和作物的影响对于可持续农业至关重要.
研究的目的:
- 评估不同来源和剂量的对土壤特性,植物吸收和作物生产率的影响.
- 评估土壤中的可用性,土壤的生物和生物化学性质以及植物的反应.
主要方法:
- 完全随机设计,使用两个Ni来源 (Ni(NO3) 2和Ni2O3) 和三个剂量 (35,70,140毫克Ni kg-1).
- 分析了土壤Ni的可用性,土壤微生物生物质 (SMB),基底土壤呼吸 (BSR),代谢系数 (qCO2),FDA水解和尿酶活性.
- 测量叶和植物部位 (芽,根,谷物) 的度,以及干质和谷物产量.
主要成果:
- 土壤中可用的Ni在0.21至54.01毫克Ni kg-1之间,Ni2O3对可用性的贡献最小.
- 增加的BSR和qCO2表明了土壤微生物的压力,而SMB和FDA的水解没有受到影响.
- (Ni) 降低了植物的度,而Ni2O3则增加了度. 谷物产量受到Ni2O3.3的剂量依赖性影响.
结论:
- 来源显著影响的吸收和分布在植物和随后的谷物产量.
- 高应用率,特别是来自Ni2O3,可能会对作物生产率产生负面影响.
- 土壤微生物呼吸和代谢率是Ni诱导的土壤生态系统压力的敏感指标.
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