Effects of biological mulching on nutrient contents of Poplar in leaves in Southern upland area

Effects of mulching weights and materials on dynamic of nutrient contents of poplar in leaves in southern upland area were investigated in this paper. The results showed that biological mulching enriched nutrient contents of poplar in leaves. Upmost nutrient contents in leaves were found in mulching of the 7.5 kg/m² treatment,and nutrient contents varied with different mulching materials.