The technique of Seedling Broadcating was first re-ported in Japan in 1970’s and introduced to China1980’s.However,it was not effectively popularizedin rice production mainly because of the require-ments of special facilities and limitation of seedlingage.Since the method could significantly save la-bor and time,a study of rice Seedling Broad- The technique of Seedling Broadcating was first re-ported in Japan in 1970’s and introduced to China1980’s.However, it was not able popularizedin rice production mainly because of the require-ments of special facilities and limitation of seedlingage. Since the method could significantly save la -bor and time, a study of rice Seedling Broad-