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生物炭固定菌的应用Bacillus megaterium用于提高的吸收和米的生长

Keru Yu^1,2,3, Zhenyu Wang^1,3, Wenyan Yang⁴

¹State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China.

Plants (Basel, Switzerland)

|January 25, 2025

概括

携带Bacillus megaterium的生物炭增加了土壤的可用性. 将有机肥与这种生物炭基剂相结合,可以显著提高植物的吸收和生长.

科学领域:

农业微生物学农业微生物学
土壤科学土壤科学
植物营养植物营养

背景情况:

(P) 对大米至关重要,但土壤P的可用性往往是有限的.
酸盐溶解细菌 (PSB) 可以增加土壤P,但它们的生存率很差.
生物炭可以作为一种载体,改善微生物生存和P动员.

研究的目的:

为了研究米皮生物炭的有效性,与Bacillus megaterium (BMB) 固定为PSB的载体.
评估BMB与有机肥 (MOF) 结合对土壤P可用性和大米P吸收的影响.
了解MOF对土壤微生物群落和碳利用的影响.

主要方法:

在大米皮生物炭上对Bacillus megaterium的固定.
用大米进行体实验,以评估土壤可用的 (AP),生物可用的P分量 (H2O-Pi,NaHCO3-Pi) 以及大米芽和根中的P含量.
分析土壤微生物群落结构 (pqqC,phoD丰富度) 和碳源利用情况 (Biolog系统).

主要成果:

BMB治疗增加了溶解的无机和有机P水平.
在MOF处理中,土壤AP值最高 (7.83毫克/公斤-1),生物可利用性P储量增加 (H2O-Pi,NaHCO3-Pi).
MOF处理增强了芽 (0.469%) 和根 (0.516%) 的P含量,促进了根部发育,改变了土壤微生物社区结构和碳利用.

结论:

生物炭固定的Bacillus megaterium有效地提高了土壤P可供大米.
有机肥和BMB (MOF) 的组合是改善P营养和米生长的有希望的策略.
这种方法为在可持续的米P管理中利用基于生物炭的微生物剂提供了理论基础.

关键词:

微生物的催化作用活动.酸盐可溶性细菌是一种可溶性细菌.含有的含量是什么基因社区基因社区大米皮生物碳水化合物

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