The Comprehensive Research on Demonstrative Area of Upland Ecological Agriculture in Zhongmen of Putian I . Study on Yield-increasing Benefits of Several Cropping Systems

The research on ecological agriculture is aimed at the macro-agriculture, with the consideration to economic, social and ecological benefits. For a long period, the grain production dominated in the cropping structure in Zhongmen, the aging and degenerated varieties are still used, and the fodder production has not been bringed to the attention. In order to improve the unreasonable cropping structure and low yield in a given area, the improved varieties of sweet potato, wheat and rice have been introduced, the traditional cropping system reformed, the different types of grainyielding models with one-ton harvest developped. As the result, the significant effect of increasing the yield and income has been achieved, which the grain yield in given area increased 34. 8%, the capitation grain pocessing amount increased 41.2%, the capitation income increased 1. 69 times.