作物产量差研究进展

目前作物实际产量与潜在产量之间存在较大的差距,缩小这个差距对于提高粮食产量.满足日益增加的粮食需求具有重要意义,特别是针对中国人多地少,水资源短缺的情况.其意义更为重要.首先阐述了进行作物产量差研究的重要性,并从产量差定义的提出与发展、研究涉及的尺度及分析方法等方面介绍了国内外作物产量差研究现状及进展,在此基础上提出目前作物产量差研究中存在的问题,并进一步探讨了今后作物产量差研究的主要发展方向.

Review of Crop Yield Gap

There is a large gap between crop potential and actual yields achieved in farmers'' fields.Closing this yield gap will play an important role in increasing food production,especially for China,in step with continued growth in demand,possible climatic changes,and decreased resource availability.It introduced the importance of closing the yield gap firstly,and then summarized the research progresses in yield gap analysis at home and abroad as following aspects:the development of definition,research scale and methods.Major problems at present were put forward,and the main research trends in the future were also discussed.