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生物炭有助于在印度的三种土壤秩序中调节碳和营养素的可用性

T J Purakayastha¹, Tanumoy Bera², Saptaparnee Dey³

¹Division of Soil Science and Agricultural Chemistry, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India. tpurakayastha@gmail.com.

Scientific reports

|April 10, 2024

概括

生物炭 (BC) 增强了土壤的营养和碳捕获. 不同的BC类型和热解温度对土壤碳原始化和营养物质的可用性在土壤类型之间有不同的影响.

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:

生物炭 (BC) 因其碳捕集潜力和土壤功能的好处而得到认可.
对于BC对土壤原料和不同土壤类型的营养物质可用性的长期影响仍未得到充分研究.

研究的目的:

调查来自大米皮,甘包和末茎 (在400和600°C下经过热解) 的BC对土壤碳原始化和营养含量的长期影响.
评估Alfisol,Inceptisol和Mollisol中的BC分解及其对 (N), (P) 和 (K) 的影响.

主要方法:

对BC特性 (pH,EC) 的分析.
在290天的化实验中,研究了三种土壤层中的BC分解和CO2演变.
在化后可用的N,P和K的量化.

主要成果:

增加热解温度通常会提高BC pH和EC.
大多数BC类型在290天内表现出原生土壤有机碳 (SOC) 的负原始化.
所有经过测试的BC修改都增加了土壤中可用的N,P和K.
像MBC6,RBC6和SBC6这样的特定BCs对碳矿化和负原始化产生了显著影响,表明碳保存的潜力.

结论:

量身定制的生物炭应用或混合不同的生物炭可以有效地提高碳捕集和土壤肥力.
生物炭修正案始终改善了土壤营养物质的可用性 (N,P,K),而不考虑原料效应.
生物炭的特性及其对土壤碳动态和营养循环的影响取决于原料和土壤类型.

关键词:

阿尔菲索尔 (Alfisol) 是一个生物炭是一种生物炭.碳矿物化的碳矿化.在 Inceptisol 中使用.摩利索尔 (Mollisol) 是一种分子.营养素的可用性营养素的可用性

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