储存时间和温度影响病原体负载,重金属和便衍生肥料中的营养水平
Eric Gbenatey Nartey1,2, Ruben Sakrabani1, Sean Tyrrel1
1Cranfield University, Bedford, UK.
Environmental technology
|February 7, 2024
概括
便衍生肥料 (FDF) 的储存是安全的,因为温度和持续时间不会显著影响病原体的再生或总. 在较低的温度下,随着时间的推移,-可能会在富含的共同堆肥中减少.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 微生物学 微生物学
背景情况:
- 由于储存期间潜在的病原体持久性和营养素变化,便衍生肥料 (FDF) 的安全性受到争议.
- 对于影响FDF储存的温度和持续时间等非生物因素的研究很少.
- 担忧包括本地病原体的再生和储存的FDF中的营养变化.
研究的目的:
- 评估储存温度和持续时间对原生大肠杆菌再生和两种类型的FDF中的NPK含量的影响.
- 在各种存储条件下评估富化共肥 (NECo) 和共肥 (Co) 的营养稳定性和微生物安全性.
主要方法:
- 采用了一个2x3x6的因数设计,有36个实验条件和3个复制.
- FDF样本在不同的温度 (5°C,25°C,35°C) 和持续时间 (每月) 下存储了6个月.
- 分析包括pH,EC,有机碳,N,NH4-N,NO3-N,P,K,大肠杆菌和总大肠杆菌.
主要成果:
- 储存温度和持续时间没有显著影响本地大肠杆菌的再生或NECo和Co.的总.
- 在NECo中的氨 (NH4-N) 度下降了27-55%,随着5°C和25°C的储存时间的增加.
- 在测试条件下,没有观察到对其他NPK营养素或大肠杆菌再生的显著影响.
结论:
- 包括NECo和Co在内的FDF是安全的储存,因为本地大肠杆菌的再生和总含量保持稳定.
- 长期储存不一定会导致FDF中显著的营养损失.
- 建议对FDF储存期间水分含量的影响进行进一步的研究.
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