Chen Lijun, Zhu Guofan, Pascual-Garcia Alberto, Dini-Andreote Francisco, Zheng Jie, Wang Xiaoyue, Zhou Shungui, Jiang Yuji
Institute of Soil Science, Chinese Academy of Sciences Nanjing China.
College of Forestry Central South University of Forestry and Technology Changsha China.
Imeta. 2024 Dec 20;3(6):e260. doi: 10.1002/imt2.260. eCollection 2024 Dec.
Phosphorus, as a nonrenewable resource, plays a crucial role in crop development and productivity. However, the extent to which straw amendments contribute to the dynamics of soil alkaline phosphomonoesterase (ALP)-producing bacterial community and functionality over an extended period remains elusive. Here, we conducted a 7-year long-term field experiment consisting of a no-fertilizer control, a chemical fertilizer treatment, and three straw (straw, straw combined with manure, and straw biochar) treatments. Our results indicated that straw amendments significantly improved the succession patterns of the ALP-producing bacterial diversity. Simultaneously, straw amendments significantly increased the network stability of the ALP-producing bacteria over time, as evidenced by higher network robustness, a higher ratio of negative to positive cohesion, and lower network vulnerability. High dynamic and stability of ALP-producing bacterial community generated high ALP activity which further increased soil Phosphorus (P) availability as well as maize productivity.
磷作为一种不可再生资源，在作物生长发育和生产力方面发挥着关键作用。然而，长期来看，秸秆改良措施对土壤碱性磷酸单酯酶（ALP）产生菌群落动态和功能的影响程度仍不明确。在此，我们开展了一项为期7年的长期田间试验，试验设置了不施肥对照、化肥处理以及三种秸秆处理（秸秆、秸秆与粪肥混合、秸秆生物炭）。我们的结果表明，秸秆改良措施显著改善了产ALP细菌多样性的演替模式。同时，随着时间推移，秸秆改良措施显著提高了产ALP细菌的网络稳定性，表现为更高的网络稳健性、更高的负向与正向凝聚比以及更低的网络脆弱性。产ALP细菌群落的高动态性和稳定性产生了高ALP活性，这进一步提高了土壤磷有效性以及玉米生产力。
