摘要
通过对山东小麦玉米套作改平作的主要影响因素——有效积温、日均气温、年降雨量、灌溉条件和社会技术经济条件及其相互关系的分析,建立了自然条件模型和社会技术经济模型。以桓台县为例,分析了套作改平作的自然条件和社会技术经济条件,得出了相应的结论。
Based on the analysis of the effective factors for the change from inter- cropping to flat cropping of wheat and corn in Shandong,those are:accumulated temperature,daily average temperature,annual rainfall,irrigation condition and so- cial-technology-economy condition and their relationships,the natural factor models and social-technology-economy model are established.Taking Huantai County as an example,the necessary nature conditions and social-technology-economy situation for the change from intercropping to flat cropping are presented.
基金
国家自然科学基金
关键词
耕作制度
套作
平作
小麦
玉米
cropping system
double intercropping and flat cropping
wheat planting
corn planting
natural factor model
technology-economy model
