Zhou Wei, Lv Teng-Fei, Chen Yong, Westby Anthony P, Ren Wan-Jun
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.
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.
ScientificWorldJournal. 2014;2014:856352. doi: 10.1155/2014/856352. Epub 2014 Jun 2.
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.
水旱轮作是亚洲为满足日益增长的粮食需求而不可避免的种植制度。粮食产量的下降增加了对水稻种植系统土壤特性的研究兴趣。水旱轮作田与其他湿地或旱地土壤不同，因为它们与在厌氧和好氧条件下频繁的干湿循环有关；这种轮作影响土壤碳氮循环，使土壤养分元素的化学形态和生物有效性随季节变化，增加土壤生物多样性，并使土壤物理性质更难分析。因此，将土壤质量维持或提高到理想水平已成为一个复杂的问题。因此，充分了解水旱轮作的土壤特性对于该系统的可持续发展是必要的。在本文中，我们深入探讨了水稻与旱地作物组合对土壤化学、物理和生物学性质的影响，这可为合理的栽培管理措施提供指导，并有助于改善土壤质量和作物产量。
