Winter crop rotation intensification to increase rice yield, soil carbon, and microbial diversity

• DOI: 10.1016/j.heliyon.2023.e12903
• Publication Date: 2023-01-10T01:49:31Z
• Authors: Quan Zhou; Peng Zhang; Zhiqiang Wang; Lixian Wang; Shubin Wang; Wenting Yang; Binjuan Yang; Guoqin Huang
• Keywords: Crop Rotation; Rotation system; Soil carbon; Summer fallow

Crop rotation has widely contributed to increasing farmland biodiversity as well improving soil carbon pools and microbial diversity. However, there is a weak understanding of the suitability winter crop intensification in double rice fields, especially with various crops. For this task, long-term field experiment based on one from 2012 was conducted five systems for rice: fallow (T0), milk vetch (T1), rape (T2), garlic (T3), potato, vetch, (T4). Parameters such yield, carbon, nitrogen, microorganism were measured. It found that compared fallow, rape, garlic, practices increased late yield by 2.5%, 2.3%, 4.5%, 3.7%, respectively; also early 4.6% 3.5%, respectively. This associated promotion tillering. At same time, rotation, organic 21%. With input diversified residues, crops effective sequestration, structure, The Shannon diversity index ranged 9.75 9.91, while 9.38. Simpson's 0.997 0.998, 0.996. In conclusion, practices, intensification, can enhance health sustainability fields through its positive feedback microorganisms.