ABSTRACT

Fungi play an important role in ecosystem and crop production, but the effect of global warming on fungal communities in soil of winter wheat fields is not clear. The present study aimed to investigate the effects of nightly warming and nitrogen application on the diversity of soil fungi in winter wheat fields. In this study, the free air temperature was increased with infrared heating, and the heating treatment was combined with nitrogen fertilizer application. The five-year continuous temperature increases significantly changed the soil nutrient content and the community structure of the soil fungi. The changes in the physical and chemical properties of the soil caused by the increase in night-time temperature, reduced the dependence of winter wheat on arbuscular mycorrhizae, increased the diversity and the evenness of the soil fungal community was increased by 51%, and significantly increased the abundance percent of Blumeria from 16% to 46%, which is the causal agent of winter wheat powdery mildew.

摘要

真菌在生态系统和农作物生产中起着重要作用，但是全球变暖对冬小麦田地土壤中真菌群落的影响尚不清楚。本研究旨在探讨夜间升温和施氮对冬小麦田土壤真菌多样性的影响。在这项研究中，自由空气温度随着红外加热而升高，并且加热处理与氮肥的施用相结合。连续五年的温度升高显着改变了土壤养分含量和土壤真菌的群落结构。夜间温度升高导致土壤理化性质的变化，降低了冬小麦对丛枝菌根的依赖性，鸡蛋从16％到46％，这是冬小麦白粉病的病因。