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博士课题项目介绍 High soil strength (HSS) restricts root growth and crop access to soil nutrients and water. While deep tillage can increase yields in HSS, these effects are inconsistent and can be short-lived and problems associated with tillage such as efforts to implement and concerns about erosion persist.Despite the long-term recognition of the need to identify how plant root systems penetrate HSS and compacted soil layers and to identify crop types/genotypes with greater ability to do so, progress in achieving this goal has been slow. Recent progress in the development of non-destructive, high-throughput root imaging systems (MRI and x-ray CT) offers a promising alternative to traditional root coring and destructive sampling methods to visualize root-soil interactions that are very labour-intensive and slow. These new procedures, especially when combined with the use of intact soil cores that maintain the physicochemical of the soil profile, allow an in-situ 3D visualis
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