Abstract
Food security is an important guarantee for world peace and development, an important foundation for building a community with a shared future for mankind, and bears on the sustainable development, future and destiny of mankind. With the growth of population and the acceleration of urbanization, cultivated land resources are increasingly strained, and as an important part of cultivated land resources, the problems of unstable output and low utilization rate of medium and low yield land have gradually become prominent, which has become an important factor restricting the sustainable development of agriculture. In recent years, metagenomics technology, as a powerful research tool, has enhanced people's understanding of the composition, distribution and diversity of microorganisms in different environments, and has been widely applied in the field of farmland soil microorganisms. In this paper, the concept and technical process of metagenomics are reviewed, and the application and development prospect of metagenomics in soil microbial research in middle-low yield field management are reviewed.
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