Effects of different tillage and residue management systems on soil organic carbon stock and grain yield of rice–wheat double cropping system

作者：Naeem Ahmad, Ahmad Latif Virk, Muhammad Bilal Hafeez, Sezai Erċışlı, Kirill S. Golokhvast, Yu Qi, Xingyu Guo, Yuanhong Zhang, Rui Wang, Xiaoli Wang, Muhammad Ishaq Asif Rehmani, Jun Li · 发表于：Ecological Indicators · 年份：2023 · DOI：10.1016/j.ecolind.2023.111452 · 被引用次数：28 · 研究领域：Soil Carbon and Nitrogen Dynamics、Rice Cultivation and Yield Improvement、Agriculture, Soil, Plant Science

Of late, intensive agricultural practices are often associated with many negative implications for soil systems, such as decline in soil organic matter and biological diversity, and increase in the risk of soil erosion, and degradation of soil physical quality. However, conservation agriculture (CA) offers minimum soil disturbance, improving and creating more efficient use of natural resources, enhancing use efficiency of external inputs and increasing soil functioning, organic matter content, and biodiversity. However, CA practices need to be redefined at the specific field level or growing conditions to promote sustainable production system without deteriorating soil health, and to manage profitability. Therefore, a fixed-site field experiment was conducted to evaluate the effects of different tillage and residue management practices; CT0 (puddled transplanted rice followed by conventional tilled wheat sown with residue removal); CTR (puddled transplanted rice followed by conventional tilled wheat sown with residue retention); NT0 (direct seeded rice followed by zero-tilled wheat sown with residue removal); NTR (direct seeded rice followed by zero-tilled wheat sown with residue retention) on soil organic carbon (SOC) stock and grain yield of rice–wheat double cropping system. The results showed that the mean SOC stock increased by 31%, 21.9% and 15.3% and by 35.2%, 22% and 17% under NTR, CTR, and NT0 compared with CT0. Furthermore, the SOC sequestration rate in NTR was sign...