Humic Acid Effects on Soil Quality and Wheat Yield in Saline-Alkali Soils

Figshare data from a 2-year field experiment examines the impact of four humic acid application rates on saline-alkali soil remediation and wheat growth. The dataset contains measurements of soil properties like pH, electrical conductivity, and nutrient availability, alongside crop metrics including root biomass and yield. It was authored by Kailong Zhang and shared under a CC BY 4.0 license.

Use Cases

• Analyze the correlation between humic acid application rates and changes in soil pH and electrical conductivity.
• Model wheat yield as a function of soil quality index and plant growth index using regression analysis.
• Compare the effects of different HA treatments on soil available potassium, available phosphorus, and soil organic matter content.
• Assess the cost-effectiveness of HA7.5 and HA15 application rates for improving root biomass, length, and volume.

Strengths

• Data originates from a controlled 2-year field experiment with four distinct treatment levels (0, 3, 7.5, 15 Mg ha⁻¹).
• Includes statistically significant (p < 0.05) measurements for over 10 soil and plant variables across two soil depth layers.
• Results are grounded in regression analysis confirming relationships between soil quality, plant growth, and final yield.

Limitations

• The dataset is small (353.8 KB), indicating limited scope and likely a low number of experimental plots or observations.
• Sample data and column structure are unavailable, complicating direct analysis without inspecting the DOCX file.
• Findings are specific to the experimental conditions of saline-alkali soils and may not generalize to other soil types.

Provenance

Source

Figshare, authored by Kailong Zhang.

Collection Method

Data collected from a 2-year field experiment exploring effects of different humic acid application rates.

Time Range

Covers one experimental year from the 2-year study.

Freshness

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Geography

Experimental site involves saline-alkali soils; specific location not provided.