In the first year, by analyzing microelements and macroelements in plants and soil, we focus on the cycles of these minerals, especially phosphorus, in plants and soil.In the second year, continuously survey vegetation and soil to evaluate the improvement of the grassland ecosystem by the addition of phosphoric acid in each treatment interval.
Through the analysis of community composition, biomass, etc., the effect of phosphorus addition on grassland ecosystem was effectively evaluated. Through the research on grassland ecosystem, the productivity of the ecosystem has been improved, and the sustainable use of the ecosystem has been realized. Elucidate the cycle of nutrients in soil and plants by measuring and analyzing the content of micro and macro elements in soil and plants.