其他摘要:Tree planting is a way to reuse abandoned agricultural fields, but hard soil layers near the surface in such fields may adversely affect the survival and growth of planted trees. We investigated the relationships between topsoil penetration resistance and trunk death and sprouting in Prunus sargentii trees planted in plowed and unplowed (control) areas of an abandoned upland slope. Penetration resistance to a depth of 0.1 m was lower in the plowed area than in the control area, indicating that plowing likely alleviated soil compaction. We observed fewer trees with dead trunks in the plowed area as compared to the control area. Trees with dead trunks generally produced sprouts, and sprout growth decreased with increasing values of Nc (number of weight drops per penetration interval) to a depth of 0.1 m. We conclude that management practices for planting in abandoned agricultural fields should include topsoil plowing.