In the quest for sustainable intensification of crop production, we discuss the option of extending the root depth of crops to increase the volume of soil exploited by their root systems. We discuss the evidence that deeper rooting can be obtained by appropriate choice of crop species, by plant breeding, or crop management and its potential contributions to production and sustainable development goals. Many studies highlight the potentials of deeper rooting, but we evaluate its contributions to sustainable intensification of crop production, the causes of the limited research into deep rooting of crops, and the research priorities to fill the knowledge gaps.

中文翻译：

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深入挖掘农业资源，深生根的价值。

为了寻求可持续的作物生产集约化，我们讨论了扩大作物根系深度以增加其根系利用的土壤量的选择。我们讨论更深层次的生根可以通过的农作物品种合适的选择，通过植物育种，或作物管理，其生产和可持续发展目标的潜在贡献来获得证据。许多研究都强调了更深层次的植根的潜力，但是我们评估了其对作物生产可持续集约化的贡献，对作物深层次植根的有限研究的原因以及填补知识空白的研究重点。