Influence of different maize straw return amounts on the stability and carbon and nitrogen content of water-stable aggregates in Black Soils: based on redundancy analysis
Randomized trial investigates how straw return affects soil aggregate stability and nutrient content in Black Soils, indicating improved management practices.
Key Points
This research examines how different amounts of straw return affect the stability and nutrient dynamics of soil aggregates.
Field micro-plot experiment with randomized block design and three replicates.
Four treatments: no straw return, half, full, and double straw return amounts.
Soil samples collected after one growing season to analyze aggregate stability and nutrient content.
Straw return improved aggregate stability and increased carbon and nitrogen sequestration in aggregates.
Proportion of macro-aggregates increased by up to 108.34%, and organic carbon concentration rose by up to 104.55%.
Nutrient content positively correlated with straw return rates, highlighting their importance for soil health.