根系截获是环境介质（岩土体）中养分无需运动直接被植物根系截获摄取的现象。一般通过该方式摄取的养分占总摄取量的一小部分。
植物主要是通过根系吸收养分，一般通过根系截获、质流和扩散三种方式。
Nutrients are absorbed mainly through roots of plants by interception, mass-flow and diffusion.
当根系穿过土壤生长时，可以截获营养物质。
The nutrient may be intercepted by the roots as they grow through the soil .
当根系穿过土壤生长时，可以截获营养物质。
The nutrient may be intercepted by the roots as they grow through the soil.
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