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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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