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一、前言 土壤侵蚀是一种不明显而又不能恢复原状的资源损失,虽然其发展缓慢,但却在世界规模上进行着。做为农业生产基本
I. INTRODUCTION Soil erosion is a loss of resources that is not obvious but can not be restored to its original condition. Although its development is slow, it is on a world scale. As basic agricultural production