Feng Xumeng, Ling Ning, Chen Huan, Zhu Chen, Duan Yinghua, Peng Chang, Yu Guanghui, Ran Wei, Shen Qirong, Guo Shiwei
Jiangsu Key Laboratory for Solid Organic Waste Utilization, Nanjing Agricultural University, Nanjing, 210095, China.
Crop Research Institute, Anhui Academy of Agricultural Science, Hefei, 230031, China.
Sci Rep. 2016 Apr 15;6:24559. doi: 10.1038/srep24559.
To investigate potential interactions between the soil ionome and enzyme activities affected by fertilization with or without organic fertilizer, soil samples were collected from four long-term experiments over China. Irrespective of variable interactions, fertilization type was the major factor impacting soil ionomic behavior and accounted for 15.14% of the overall impact. Sampling site was the major factor affecting soil enzymatic profile and accounted for 34.25% of the overall impact. The availabilities of Pb, La, Ni, Co, Fe and Al were significantly higher in soil with only chemical fertilizer than the soil with organic amendment. Most of the soil enzyme activities, including α-glucosidase activity, were significantly activated by organic amendment. Network analysis between the soil ionome and the soil enzyme activities was more complex in the organic-amended soils than in the chemical fertilized soils, whereas the network analysis among the soil ions was less complex with organic amendment. Moreover, α-glucosidase was revealed to generally harbor more corrections with the soil ionic availabilities in network. We concluded that some of the soil enzymes activated by organic input can make the soil more vigorous and stable and that the α-glucosidase revealed by this analysis might help stabilize the soil ion availability.
为了研究土壤离子组与施肥（有无有机肥）影响的酶活性之间的潜在相互作用，从中国的四个长期实验中采集了土壤样本。无论变量间的相互作用如何，施肥类型都是影响土壤离子组行为的主要因素，占总体影响的15.14%。采样地点是影响土壤酶谱的主要因素，占总体影响的34.25%。仅施化肥的土壤中铅、镧、镍、钴、铁和铝的有效性显著高于添加有机改良剂的土壤。包括α-葡萄糖苷酶活性在内的大多数土壤酶活性都被有机改良剂显著激活。与化肥土壤相比，有机改良土壤中土壤离子组与土壤酶活性之间的网络分析更为复杂，而有机改良下土壤离子之间的网络分析则不那么复杂。此外，α-葡萄糖苷酶在网络中通常与土壤离子有效性有更多的相关性。我们得出结论，一些由有机投入激活的土壤酶可以使土壤更具活力和稳定性，并且该分析中揭示的α-葡萄糖苷酶可能有助于稳定土壤离子有效性。
