Author:
Cai Shumei,Lv Weiguang,Zhu Haitao,Zhang Deshan,Fu Zishi,Zhang Hanlin,Xu Sixin
Abstract
Abstract
Rice-fish mutualistic production systems rationalise the use of water and soil resources in an improved approach to sustainable food production. However, drivers of fungi community structure in paddy soil, including effects of nitrogen (N) application rate, are unclear in these systems. Here, we assessed soil fungi community and soil physicochemical responses in paddy soil to contrasting rates of N application in a rice-fish system. To clarify the mutualistic effects, the rice-fish system was compared with a standard rice monoculture under a 325.5 kg ha−1 N application rate. The results showed that N application rate affected abundance of paddy soil fungi (P < 0.05). Alpha diversity and richness of fungi were lower in the rice-fish system, but evenness increased with a decrease in N application rate, while the rate of N determined diversity of soil fungi in the rice-fish system. Dominant genera in the two systems differed, and soil physicochemical properties were more important drivers of soil fungi community structure in the rice-fish mutualistic system than in rice monoculture. Total N, available N and P regulated the abundance of dominant fungi. Our results indicate that management of soil fungi may contribute to sustainable agricultural production.
Publisher
Springer Science and Business Media LLC
Reference41 articles.
1. Berg, H. & Tam, N. T. Decreased use of pesticides for increased yields of rice and fish-options for sustainable food production in the Mekong Delta. ScTEn 619–620, 319–327 (2018).
2. Mohanty, R. K., Jena, S. K., Thakur, A. K. & Patil, D. U. Impact of high-density stocking and selective harvesting on yield and water productivity of deepwater rice–fish systems. Agric. Water Manage. 96, 1844–1850 (2009).
3. Feng, J., Li, F., Zhou, X., Xu, C. & Fang, F. Nutrient removal ability and economical benefit of a rice-fish co-culture system in aquaculture pond. Ecol. Eng. 94, 315–319 (2016).
4. Hu, L. et al. The productivity of traditional rice–fish co-culture can be increased without increasing nitrogen loss to the environment. Agric. Ecosyst. Environ. 177, 28–34 (2013).
5. Lu, J. & Li, X. Review of rice–fish-farming systems in China — One of the globally important ingenious agricultural heritage systems (GIAHS). Aquaculture 260, 106–113 (2006).
Cited by
14 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献