This experiment was about similar Longjing flat green tea manufactured with the Yunnan-Dayezhong.The different degree of spread was compared to the quality characteristics.The results showed:The green leaf by 3 hours spread(the water content in about 70%,the deduced-weight rate at 15%~25%) was the most optimum to product the best quality.It's quality characteristics were flat appearance sleek,fine and slender,color green rain,strong fragrance lasting fresh and tender,taste delightfully fresh tasty,a bright ...