Response of Soil Aggregate Stability to Phosphorus, Nitrogen, and Organic Fertilizer Addition: A Meta-Analysis

Soil is a highly significant resource for human survival, and agglomerates, as the basic unit of soil structure, not only enhance fertility control biological validity nutrients but also strengthen soil’s erosion resistance. The mass application fertilizers may significantly affect crop growth rational dispensing will be an urgent issue to addressed. Therefore, effect fertilizer on stability water-stable aggregates needs studied under different meteorological conditions draw more general feasible conclusions. Our meta-analysis data from 220 independent observations 56 published studies found that increased mean weight diameter (MWD) by average 18% compared no-fertilizer treatment. Among nitrogen (N), phosphate (P), organic (OM) treatments, treatment had stimulatory MWD (26%). levels, low level phosphorus (<40 kg·ha−1 yr−1), high N (>120 kg·ha−1·yr−1), (<5000 kg·ha−1·yr−1) 19%, 14%, 41%, respectively. Across types land use types, response was positive red soils paddy fields, fertilizer’s than chemical fertilizer. correlation analysis showed rate negatively correlated with pH bulk density (BD) positively carbon (SOC) microbial (MBC). Meanwhile, partial least square structural equation model (PLS-SEM) factors were main affecting aggregates, while secondary physical properties. this study long-term instead better alone, attention should paid influence temperature rainfall in aggregate future.