Li Minghao, Tang Caiguo, Chen Xue, Huang Shengwei, Zhao Weiwei, Cai Dongqing, Wu Zhengyan, Wu Lifang
Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China.
School of Life Sciences, University of Science and Technology of China, Hefei 230026, China.
Materials (Basel). 2019 Apr 9;12(7):1148. doi: 10.3390/ma12071148.
Generally, crop straw degrades slowly in soil, which is unfavorable for tillage and next crop growth. Thus, it is important to develop a promising technology to boost degradation of straw. Herein, a nanobiosystem has been developed by loading bacterial mixture in nanostructured attapulgite (ATP) and using it as a straw returning agent (SRA). Therein, ATP could effectively anchor bacteria to the surface of straw and greatly facilitate the adhesion and growth of bacteria. Consequently, this technology could effectively accelerate the degradation and transformation of straw into nutrients, including nitrogen (N), phosphorus (P), potassium (K), and organic matters (OM). Pot and field tests indicated that SRA displayed significant positive effects on the growth of the next crop. Importantly, SRA could effectively decrease greenhouse gas emissions from farmland, which is beneficial for the environment. Therefore, this work provides a facile and promising method to facilitate the degradation of straw, which might have a potential application value.
一般来说，作物秸秆在土壤中降解缓慢，这不利于耕作和下一季作物生长。因此，开发一种有前景的技术来促进秸秆降解很重要。在此，通过将细菌混合物负载在纳米结构凹凸棒石（ATP）中并将其用作秸秆还田剂（SRA），开发了一种纳米生物系统。其中，ATP可有效地将细菌锚定在秸秆表面，并极大地促进细菌的附着和生长。因此，该技术可有效加速秸秆降解并转化为养分，包括氮（N）、磷（P）、钾（K）和有机物（OM）。盆栽和田间试验表明，SRA对下一季作物生长具有显著的积极影响。重要的是，SRA可有效减少农田温室气体排放，这对环境有益。因此，这项工作提供了一种简便且有前景的方法来促进秸秆降解，可能具有潜在的应用价值。
