Impact of High-temperature Sealed Soil and Rice Crop Rotation on Soil Nutrients and Bacterial Communities of Pepper
FAN Junmiao
ZHANG Minghui
LIAN Dongmei
LI Zhou
HONG Jianji
YAO Yunfa
Abstract：To alleviate the continuous cropping obstacle in pepper soil,this study implemented two measures(high-temperature soil sealing and rice crop rotation)to treat the soil,analyzing the physicochemical properties and microbial community composition of the treated soil.Both treatments significantly increased soil pH,alleviating acidification,but reduced calcium(Ca),magnesium(Mg),total nitrogen(TN),and organic matter(OM)content.Available potassium(AK)declined sharply under rice crop rotation,while alkaline-hydrolyzable nitrogen(AN)decreased significantly after high-temperature sealed soil.Bacterial community abundance increased in both treatments,firmicutes were enriched under high-temperature sealed soil,whereas Nitrospirae abundance rose with rice crop rotation.Correlation analysis identified that the bacterial community was influenced by calcium,phosphorus,magnesium,nitrogen,available phosphorus,organic matter,and pH,with pH having a significantly stronger impact on most bacterial phyla than other environmental factors.High-temperature sealed soil and rice-based crop rotation demonstrate partial efficacy in mitigating soil degradation associated with continuous pepper monoculture.However,both interventions significantly depleted critical soil nutrients.To counteract these losses and ensure sustainable soil restoration,integration with precision fertilization protocols was recommended to replenish nutrient reserves and maintain long-term agroecosystem stability.
Keywords：High-temperature sealed soilrice crop rotationpeppersoil nutrientsbacterial communities
Publication Date：2026-02-28
Online Publishing Date：2026-08-28(First online date of this platform, not the publication date of the document)
Pages：9( 46-53,100 )