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EFFECT OF BENTONITE AND PHOSPHORUS FERTILIZER ON INORGANIC PHOSPHORUS TRANSFORMATION AND THEIR AVAILABILITIES IN CALCAREOUS SOIL Comparison of four methods and their efficiency for total RNA extraction from leaves of pinellia ternata Study on the use of polymer/bentonite composites for controlled release Removal of red tide organisms by organo-modified bentonite Effect of Water Conservation Technique on Seeds Germination,Seedling Growrh and Physiological Characteristics of Platycodon grandiflorum Selective flocculation processing technology of chitosan complex flocculant on Shuanghuanglian aqueous extract VALIDITY OF CHALK AND BENTONITE APPLICATION IN SOIL AND WATER ON REDUCING THE ABSORPTION OF RADIO-STRONTIUM AND RADIO-CERIUM BY CROP