The growth, yield and quality of tea were examined by field plot test and physiological test in lab after application of 3.4% COM CAT WP. The content of chlorophyll and the yield increased after treatment of 3.4% COM CAT WP under 1.75~7.00 g/667 m 2. The higher the dose, the higher the content of chlorophyll and the yield. The content of polyphenols decreased and the content of amino acids increased. It showed that 3.4% COM CAT WP has good in...