(2)Role of science and technology Agricultural development is boosted through a principles in order to enhance yields combination of the experiences in traditional Chinese agriculture with the latest technologies. The experiences include intensive farming, intercropping,interplanting,crop rotation, balanced use and protection of farmland,etc, while the latest technologies,model cultivation, film-covered cultivation,application of prescribed fertilizers,improved new crop varieties and animal breeds,integrated pest management,etc. (2) Role of science and technology Agricultural development is boosted through a principles in order to enhance yields combination of the experiences in traditional Chinese agriculture with the latest technologies. The experiences include intensive farming, intercropping, interplanting, crop rotation, balanced use and protection of farmland, etc, while the latest technologies, model cultivation, film-covered cultivation, application of prescribed fertilizers, improved new crop varieties and animal breeds, integrated pest management, etc