混交林的改土效益及其在防止地力衰退上的应用

Benefits of Improving Soil Productivity from Mixed Plantation and Their Preventive Roles in the Depletion of Soil Productivity.

讨论了人工混交林对林地土壤理化性质、微生物及水土保持等方面的改良和促进作用。针对目前人工纯林地力衰退的问题，提出了混交林可作为防止地力衰退的途径， 并对混交林应用上的有关问题作了探讨。

Beneficial changing and improvement of the soil physical and chemical properties, microorganic properties and erosion control capacity in the mixed plantations are discussed in this paper. Mixed plantation can be used to prevent soil productivity from deterioration in the repeated pure plantations. Some problems of the application of mixed plantation are also discussed in this paper.