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首页> 外文期刊>Plant and Soil >Is there a role for arbuscular mycorrhizal fungi in production agriculture?
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Is there a role for arbuscular mycorrhizal fungi in production agriculture?

机译：丛枝菌根真菌在生产性农业中有作用吗？

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摘要

This review presents the point of view that arbuscular mycorrhizal fungi (AMF) do not play a vital role in the nutrition and growth of plants in many production-orientated agricultural systems. Highly available soil P often limits AM colonisation and causes the C-costs to the host to outweigh any benefits from colonisation. Even when P availability is low and AM colonisation levels are high, as may occur in organic and biodynamic agricultural systems, AMF may not always contribute to plant growth for reasons not yet understood. AM fungal activity may also be greatly limited by soil fumigation, non-responsive plant varieties, or rotations based primarily on non-mycorrhizal crops or crops of low AM dependency. Thus, profitability may sometimes be enhanced by management practices, such as tillage and P-fertilisation, which limit AM colonisation. Manipulation of agricultural systems to favour AMF must occur only if there is clear evidence that AMF make a positive contribution to yield or are vital for maintenance of ecosystem health and sustainability. A crucial role for AMF in soil structural stability or in enhancing micronutrient concentrations in produce may be sufficient evidence and may eventually compel consideration of AMF responsiveness when breeding new crop varieties.
机译：这篇评论提出了这样一种观点，在许多以生产为导向的农业系统中，丛枝菌根真菌（AMF）在植物的营养和生长中不发挥至关重要的作用。高度可用的土壤P通常会限制AM定植，并导致寄主的C成本超过定植带来的任何好处。即使在有机和生物动力农业系统中可能发生的磷缺乏和AM定植水平很高的情况下，AMF仍可能由于未知的原因而总是无法促进植物生长。土壤熏蒸，无反应的植物品种或主要基于非菌根性作物或低AM依赖性作物的轮作也可能极大地限制AM真菌的活性。因此，有时可以通过限制耕种定殖的管理措施（例如耕作和磷肥）来提高盈利能力。只有当有明确的证据表明AMF对产量有积极贡献或对维持生态系统健康和可持续性至关重要时，才必须进行有利于AMF的农业系统操纵。 AMF在土壤结构稳定性或提高农产品中微量营养素浓度方面的关键作用可能是充分的证据，并可能最终在育种新作物品种时迫使人们考虑AMF的响应能力。

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