Maize, Peanut, and Millet Rotations Improve Crop Yields by Altering the Microbial Community and Chemistry of Sandy Saline-Alkaline Soils
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View abstract on PubMed
Summary
This summary is machine-generated.Intensive crop rotation, including maize, peanut, and millet, significantly boosted crop yield and economic returns in saline-alkaline soils. This pattern improved soil health by increasing organic matter and nutrient availability, enhancing microbial functions for sustainable agriculture.
Area Of Science
- Agricultural Science
- Soil Science
- Microbiology
Background
- Crop rotation is known to enhance crop yield and soil health.
- Limited research exists on intensive cropping patterns for improving saline soil microenvironments.
- Saline-alkaline soils present challenges for agricultural productivity.
Purpose Of The Study
- To evaluate the impact of a three-year maize-peanut-millet crop rotation on crop yield and soil microenvironment.
- To assess changes in microbial community composition and function in response to crop rotation.
- To determine the effects on soil properties like pH, organic matter, and nutrient availability.
Main Methods
- Implemented a three-year maize-peanut-millet crop rotation pattern.
- Collected rhizosphere soil samples at crop maturity from different tillage layers (0-20 cm and 20-40 cm).
- Analyzed soil properties (pH, organic matter, available nutrients) and microbial community composition and function.
Main Results
- Maize yield increased by 32.07% and economic benefits by 22.25% compared to continuous cropping.
- Soil pH decreased by 2.36%, organic matter increased by 13.44%-15.84%, and available nutrients rose by 11.94%-69.14%.
- Crop rotation enhanced soil nitrogen and phosphorus metabolism (8.61%-88.65%) and altered microbial communities, favoring Actinobacteria and Basidiomycota.
Conclusions
- A three-year maize-peanut-millet crop rotation effectively improves soil health and crop yield in sandy saline-alkaline soils.
- Enhanced microbial community function, driven by increased abundance of specific bacteria and fungi, is key to yield improvements.
- This intensive cropping pattern offers a viable strategy for green and sustainable agricultural development in challenging soil conditions.
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