What is the primary function of drainage tiles in irrigation systems?

The primary function of drainage tiles in irrigation systems is to remove excess water from the soil. Drainage tiles are typically placed underground and help to manage water levels in agricultural fields and landscapes. By effectively directing excess water away from the root zone, they prevent waterlogging, which can damage crops and hinder plant growth. Proper drainage ensures that the soil maintains an optimal moisture level for crop health, allowing for better root aeration and reducing the risk of diseases associated with overly wet conditions.

The other options, while they pertain to aspects of irrigation and soil management, do not accurately describe the main purpose of drainage tiles. Collecting rainwater for reuse, distributing nutrients, and enhancing soil quality involve different methods and practices that either work in tandem with or independently of drainage systems.