Abstract
Saline-alkali soils are widely distributed in arid and semi-arid regions worldwide, posing significant challenges to crop growth and nutrient uptake. Salt accumulation and alkaline conditions not only inhibit the absorption of essential nutrients but also deteriorate soil structure, ultimately affecting agricultural productivity and food security. This study systematically analyzes the effects of different tillage practices (such as deep tillage and no-tillage) and crop rotation patterns on the distribution of soil micronutrients and crop nutrient uptake efficiency, proposing optimized nutrient management strategies adapted to saline-alkali conditions. Additionally, it explores the effectiveness of precision fertilization techniques, soil amendments (such as organic matter and gypsum), and the potential value and practical applications of big data analytics and smart agriculture technologies in nutrient management. By integrating multidimensional technologies and management approaches, this study proposes a comprehensive framework for crop nutrient management in saline-alkali soil environments, aiming to enhance nutrient use efficiency, improve soil health, and promote sustainable agricultural development.
