...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science and Pollution Research >Molecular properties of a fermented manure preparation used as field spray in biodynamic agriculture
【24h】

Molecular properties of a fermented manure preparation used as field spray in biodynamic agriculture

机译：生物动力农业中用作田间喷雾的发酵肥料制剂的分子特性

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Manure products fermented underground in cow horns and commonly used as field spray (preparation 500) in the biodynamic farming system, were characterized for molecular composition by solid-state nuclear magnetic resonance [~(13)C cross-polarization magic-ang le-spinning NMR (~(13)C-CPMAS-NMR)] spectroscopy and offline tetramethylammonium hydroxide thermochemolysis gas chromatography-mass spectrometry. Both thermochemolysis and NMR spectroscopy revealed a complex molecular structure, with lignin aromatic derivatives, polysaccharides, and alkyl compounds as the predominant components. CPMAS-NMR spectra of biodynamic preparations showed a carbon distribution with an overall low hydrophobic character and significant contribution of lignocellulosic derivatives. The results of thermochemolysis confirmed the characteristic highlighted by NMR spectroscopy, revealing a molecular composition based on alkyl components of plant and microbial origin and the stable incorporation of lignin derivatives. The presence of biolabile components and of undecomposed lignin compounds in the preparation 500 should be accounted to its particularly slow maturation process, as compared to common composting procedures. Our results provide, for the first time, a scientific characterization of an essential product in biodynamic agriculture, and show that biodynamic products appear to be enriched of biolabile components and, therefore, potentially conducive to plant growth stimulation.
机译：通过牛角在地下发酵的粪肥产品，并在生物动力耕作系统中通常用作田间喷雾剂（制剂500），通过固态核磁共振[〜（13）C交叉极化魔术角纺纱]表征其分子组成。 NMR（〜（13）C-CPMAS-NMR）]光谱和离线四甲基氢氧化铵热化学气相色谱-质谱。热化学分解和NMR光谱均显示出复杂的分子结构，其中木质素芳族衍生物，多糖和烷基化合物为主要成分。生物动力制剂的CPMAS-NMR光谱显示出碳分布，总体上具有较低的疏水性和木质纤维素衍生物的显着贡献。热化学分析的结果证实了NMR光谱法突出的特性，揭示了基于植物和微生物来源的烷基成分以及木质素衍生物稳定掺入的分子组成。与常见的堆肥程序相比，制剂500中存在生物不稳定成分和未分解的木质素化合物的原因是其特别缓慢的成熟过程。我们的结果首次提供了生物动力农业中必不可少的产品的科学特性，并表明生物动力产品似乎富含生物不稳定成分，因此潜在地有利于植物生长的刺激。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号