The lab’s major concerns are the sustainable utilization of soil resources and the integrated soil fertility management. Its tasks include: 1) diagnosis and improvement of soil fertility; 2) improvement of nutrient diagnostic methods; 3) long-term monitoring of soil fertility and nutrient dynamics in different cropping systems and soil management; 4) investigation of nutrient utilization efficiency and fertilizer requirement for different crops in the soil-crop-environment system; 5) study for resolving crop physiological disorders in specific regions; and 6) establishment of nutrient management-based safe production technologies.