陕北黄土丘陵区土壤中物质循环与粮食生产关系的研究  

The Relation between Crop Yield and Material Cycle in the Soil in the Loess Hilly Regions of North Shaanxi

作　　者：赵更生[1] 郑剑英[1] 吴瑞俊[1] 

机构地区：[1]中国科学院水利部西北水土保持研究所,陕西杨陵712100

出　　处：《水土保持学报》1993年第1期81-91,共11页Journal of Soil and Water Conservation

基　　金：国家"七五"科技攻关项目内容

摘　　要：根据8年长期定位观测结果,讨论了营养物质输入和作物产量的关系,建立了几种主要作物产量和营养物质输入量的数学模型。从土壤养分平衡出发,论述了不同输入下氮磷养分的平衡特征,为实现稳产高产、培肥地力提供了科学依据。Based on the observed results from long-term locational experiment for 8 years, the relation between crop yield and imports of nutritive material is discussed, the mathematic models between crop yields and imports of nutritive material are established. From the view of soil untrient balance, the balance features of N,P under different material imports conditions are dealt with, it contributes the scientifical base for realizing stable-high and bettering soil fertility.

关 键 词：物质循环 粮食生产 营养物质输入 陕北 黄土丘陵区 

分 类 号：S158.3[农业科学—土壤学] S155.24[农业科学—农业基础科学]