Screening of a Strain Producing Acid-stable α-Amylase and Optimization of Its Fermentation Condition Selection and Application of Beauveria bassiana to Control Tessaratoma papillosa Xylanase strain screening and restriction sites analysis Screening of phytase producing strain and optimization of fermentation conditions SCREENING OF THE SUPERIOR STRAINS OF BEAUVERIA BASSIANA OF PANTANA PHYLLOSTACHYSAE AND PRACTICAL APPLICATION Screening of phytase-producing strain and its optimal solid state phytase-producing conditions Preliminary Screen of Virulent Strains of Metarhizium anisopliae against Hylobitelus xiaoi