Approaches to Enhance Crop's Yield Potential

In this paper,two new kinds of crop yield potentials the inherent and the extrinsic are put forwarded.It is analyzed how to enhance crop's yield potential in the paper,into which the research has already been done a lot up to new.The paper focuses on that cropping benefit has begun to decline,it becomes more and more difficult to enhance crop's yield further, and crop's yield potential is limited. In addition, the idea systematic potential of crop yield is suggested as well.The approaches how to enhance crop's yield and its potential is generalized as breeding techniques,cultivation measures, input optimization,stress control and environmental improvement.