Abstract: After the investigation on the input and output of four varieties of super rice in 2001 and 2007 from 568 households which belonged to ten counties in two southward province and one northward province,this author analyzed the economic benefits of super rice,and studied the effect of input on yield of super rice.The results of the research were showed as follows: as far as the varieties of super rice were concerned,when the rice acreage increased 10 percents,the rice yields would increase 17.2 percents to 19.1 percents;When the effective content of organic fertilizer and potassium fertilizer increased 10 percents,the rice yields would increase 6.78 percents and 4.95 percents.The input of potassium fertilizer had visibly improved in past six years,but the effect of increasing labor input on the increasing yield was not distinct,and so on.So we should pay attention to the input of fertilizer.Finally,this article put forward some suggestions to extend the varieties of super rice and accelerate the intensification and specialization and mechanization of super rice production.

Key words: Super Rice, Input and output, Fertilizer, Suggestion