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Journal article
Increased rice yield in long-term crop rotation regimes through improved soil structure, rhizosphere microbial communities, and nutrient bioavailability in paddy soil
Biology and fertility of soils, Vol.54(8), pp.909-923
11/2018
Web of Science ID: WOS:000447917800003
Abstract
Soil in short-term crop rotation systems (STCR) is still in the initial development stage of farmland soil, whereas after long-term crop rotation treatment (LTCR), soil properties are significantly different. This study compares STCR (4 years) and LTCR (30 years) rice-rice-fallow, rice-rice-rape rotation practices under the same soil type background and management system. To reveal ecosystem mechanisms within soils and their effects on rice yield following LTCR, we analyzed the physical, chemical, and microbiological properties of soils with different rotations and rotation times. Relative to STCR, LTCR significantly reduced soil water-stable aggregate (WSA) content in the < 0.053-mm range, while > 2 mm WSA content significantly increased. Soil organic matter increased in fields under LTCR, mainly in > 2 mm, 2–0.25 mm, and < 0.053 mm soil WSA in 0–10 cm soil layer. LTCR was associated with significantly increased total soil organic matter, at the same time being associated with increasing the amount of active organic matter in the 0–20 cm soil layer. The two crop rotation regimes significantly differed in soil aggregate composition as well as in soil N and P, microbial biomass, and community composition. Relative to STCR, LTCR field soils had significantly higher soil organic matter, active organic matter content, soil enzyme activities, and overall microbial biomass, while soil WSA and microbial community composition was significantly different. Our results demonstrate that LTCR could significantly improve soil quality and rice yield and suggest that length of rotation time and rice-rice-rape rotation are critical factors for the development of green agriculture.
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Details
- Title
- Increased rice yield in long-term crop rotation regimes through improved soil structure, rhizosphere microbial communities, and nutrient bioavailability in paddy soil
- Publication Details
- Biology and fertility of soils, Vol.54(8), pp.909-923
- Resource Type
- Journal article
- Publisher
- Springer Berlin Heidelberg
- Number of pages
- 15
- Grant note
- Grant No.31101596, 31372130 / National Natural Science Foundation of China (http://dx.doi.org/10.13039/501100001809)
- Copyright
- © 2018, Springer-Verlag GmbH Germany, part of Springer Nature
- Identifiers
- WOS:000447917800003; 99380592695106600
- Academic Unit
- Biology; Center for Environmental Diagnostics and Bioremediation ; Hal Marcus College of Science and Engineering
- Language
- English