【摘要】 从理论与实践上论述了四位一体生态农业模式的技术路线及其应用技术,并对其效益进行了分析,为在北方大力推广该模式提供了科学依据。更多还原

【Abstract】 From both theoretical and practical point of view,the methodology and techniques for the construction of four-in-one eco-agricultural model are discussed. The benefits from that combination are analyzed. It builds up a scientific background for the popularization of this model in northern China.更多还原