Effect of different potassium on phenol metabolism of tomato seedlings EFFECT OF POTASSIUM NITRATE AND SULPHATE ON GROWTH,ROOT MORPHOLOGICAL TRAITS,POTASSIUM UPTAKE AND UTILIZATION EFFICIENCY OF TOMATO SEEDLINGS Studies on processing technology of Chloriti Lapis Studies on processing technology of Chloriti Lapis Effect of Potassium Nitrate on Chilling Resistance and Green Period of Eremochloa ophiuroides(Munro.) Hack Studies on the Chemical Constituents of Gossampinus malahorica(L.) iMerr. (Ⅱ)