Effects of Crop Water and Nitrogen Coupling on Field Soil Environment

Soil environment in which crops are grown is crucial for improving crop yield and quality．To understand progress of research on effects of crop water and nitrogen coupling on soil environment and to provide a theoretical basis for future in-depth research on sustainable development of soil productivity, results of effects of crop water and nitrogen coupling on soil environment, such as soil bulk, porosity, water content, temperature, nutrients, organic matter, enzyme activity, microorganisms and gas emissions, were summarised．The results also suggested future research directions for water-nitrogen coupling, with a view to providing a theoretical basis for efficient soil production and sustainable use．