Improved crop yield and reduced nitrate nitrogen leaching with straw return in a rice-wheat rotation of Ningxia irrigation district
Open accessAbstract
Field experiments were conducted in rice-wheat rotation under conventional management to determine the effects of straw return ((half straw return, HS) and (total straw return, TS)) on crop yield, N uptake, soil properties and soil NO 3−–N leaching. We found that straw return significantly increased crop yield and N uptake. TS significantly increased soil SOM at depths of 20 cm and 30 cm. Straw return had significantly increased soil NO 3−–N leaching at a depth of 10 cm, whereas significantly decreased soil NO 3−–N leaching at depths of 30 cm and 90 cm in the rice season. In wheat season, HS and TS performed better than conventional fertilization management without straw return in reducing soil NO 3−–N leaching at depth of 90 cm. Soil NO 3−–N leaching was significantly decreased through enhancing total N uptake, improving soil aggregation and decreasing soil NO 3−–N concentration. Our results indicated that total straw return has the potential to increase crop yield, improve soil aggregation and decrease soil NO 3−–N concentration, thus increasing total N uptake and reducing soil NO 3−–N leaching in the rice-wheat rotation system of Ningxia Yellow river irrigation district. In the future, the long-term observation of crop yield and nitrate nitrogen leaching are necessary to identify the environmentally friendly straw return practices for rice-wheat rotation.
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Upon returning straw, bulk density was often decreased while soil aggregates increased.
“Furthermore, bulk density was often decreased (Anik et al., 2017;Ampofo, 2018) upon returning straw, while soil aggregates increased (Yang et al., 2018).”
From Comparing straw, compost, and biochar regarding their suitability as agricultural soil amendments to affect soil structure, nutrient leaching, microbial communities, and the fate of pesticides (2021) · cites this paper as Yang et al., 2018
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- Authors
- Yang, S., Wang, Y., Liu, R., Xing, L., & Yang, Z.
- Affiliations
- Chinese Academy of Agricultural Sciences (CN)
- Chinese Academy of Sciences (CN)
- Ningxia Academy of Agriculture and Forestry Sciences (CN)
- Corresponding author
- Wang, Yongsheng
- Venue
- Scientific Reports
- Published
- 2018-06-21
- Volume
- 8
- Issue
- 1
- Pages
- 9458-9458
- ISSN
- 2045-2322 (ISSN-L)
- PMC
- PMC6013432
- OpenAlex
- W2807955374
- Cited by
- 77
- References
- 1
- Citations by year
- 2026: 8 · 2025: 7 · 2024: 14 · 2023: 12 · 2022: 12 · 2021: 11 · 2020: 8 · 2019: 5
- FWCI
- 5.61
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Scientific Reports (publishedVersion, cc-by)
- Europe PMC (PubMed Central) (publishedVersion, other-oa)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Soil Science › Agricultural Science and Fertilization
- Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Rice Cultivation and Yield Improvement
- Keywords
- straw incorporation, rice-wheat cropping system, nitrate leaching, crop yield, nitrogen uptake, soil organic matter, soil aggregation, soil nitrogen
- MeSH terms
- Crop Production, China, Nitrates, Oryza, Soil, Triticum, Agricultural Irrigation, Nitrogen Cycle
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