title: Soil physicochemical and biological properties of paddy-upland rotation: a review.
abstract: Paddy-upland rotation is an unavoidable cropping system for Asia to meet the increasing demand for food. The reduction in grain yields has increased the research interest on the soil properties of rice-based cropping systems. Paddy-upland rotation fields are unique from other wetland or upland soils, because they are associated with frequent cycling between wetting and drying under anaerobic and aerobic conditions; such rotations affect the soil C and N cycles, make the chemical speciation and biological effectiveness of soil nutrient elements varied with seasons, increase the diversity of soil organisms, and make the soil physical properties more difficult to analyze. Consequently, maintaining or improving soil quality at a desirable level has become a complicated issue. Therefore, fully understanding the soil characteristics of paddy-upland rotation is necessary for the sustainable development of the system. In this paper, we offer helpful insight into the effect of rice-upland combinations on the soil chemical, physical, and biological properties, which could provide guidance for reasonable cultivation management measures and contribute to the improvement of soil quality and crop yield.
authors.affiliation: Key Laboratory of Crop Eco-Physiology and Farming System in Southwest China, Ministry of P.R. China, Wenjiang, Sichuan 611130, China ; College of Agronomy, Sichuan Agricultural University, Wenjiang, Sichuan 611130, China.
authors.forename: Wei
authors.identifier: 0000-0002-0540-1669
authors.initials: W
authors.lastname: Zhou
authors.affiliation: Key Laboratory of Crop Eco-Physiology and Farming System in Southwest China, Ministry of P.R. China, Wenjiang, Sichuan 611130, China ; Rice Research Institute, Sichuan Agricultural University, Wenjiang, Sichuan 611130, China.
authors.forename: Teng-Fei
authors.initials: TF
authors.lastname: Lv
authors.affiliation: Key Laboratory of Crop Eco-Physiology and Farming System in Southwest China, Ministry of P.R. China, Wenjiang, Sichuan 611130, China ; College of Agronomy, Sichuan Agricultural University, Wenjiang, Sichuan 611130, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Chen
authors.affiliation: College of Agronomy, Sichuan Agricultural University, Wenjiang, Sichuan 611130, China.
authors.forename: Anthony P
authors.initials: AP
authors.lastname: Westby
authors.affiliation: Key Laboratory of Crop Eco-Physiology and Farming System in Southwest China, Ministry of P.R. China, Wenjiang, Sichuan 611130, China ; College of Agronomy, Sichuan Agricultural University, Wenjiang, Sichuan 611130, China.
authors.forename: Wan-Jun
authors.initials: WJ
authors.lastname: Ren
mesh_terms: D000383:Agriculture / Q000379:methods*; D018556:Crops, Agricultural / Q000737:chemistry / Q000502:physiology; D012275:Oryza / Q000737:chemistry* / Q000502:physiology*; D012987:Soil / Q000737:chemistry*
chemical_list: D012987:Soil