A PRELIMINARY STUDY ON THE RELATION OF THE CHEMICAL COMPOSITIONS IN THE BARK OF POPLAR TO DOTHIORELLA GREGARIA SACC.——Ⅰ. THE RELATION OF THE MACRONUTRIENTS TO D. GREGARIA SACC. Influence of N, P additions on the transfer of nickel along the food-chain Effects of Boron, Molybdenum, Zinc and Macronutrients on the Yield and Quality of Alfalfa Effects of different potassium fertilizers on production, quality and storability of Fuji apple Study on macronutrient absorption of soilless medium cultivated muskmelon