北方庭院生态系统能量分析及养分平衡研究  

A STUDY OF THE ENERGY ANALYSIS AND NUTRIENT BALANCE OF THE COURTYARD ECOSYSTEM IN NORTHERN CHINA

作　　者：梁文举[1] 郭秀银[1] 杨玉兰[1] 卢明远[1] 闻大中[1] 

机构地区：[1]中国科学院沈阳应用生态研究所

出　　处：《自然资源学报》1998年第1期28-33,共6页Journal of Natural Resources

基　　金：中国科学院"八五"重大资助

摘　　要：以基于食用菌生产的北方庭院生态系统为研究对象，通过对沈阳南郊一典型农户庭院生态系统的能量分析与养分平衡研究表明，该庭院生态系统的产品总输出能为４１８７２１４ＭＪ／ａ，其中平菇产品的生物能占６５４％；输入输出系统的Ｎ、Ｐ２Ｏ５及Ｋ２Ｏ基本上保持着养分平衡；该庭院生态系统是一个生产力高、综合效益可观的系统，对指导该地区农村庭院生态系统建设具有重要的现实意义。This paper takes northern China's courtyard ecosystem based on the production of edible mushroom as the research abject. The energy analysis and nutrient balance of a typical peasant household courtyard in the suburb of Shenyang have been studied. The results show that the total exported energy of the products of this courtyard ecosystem is 41 872.14MJ/a. Of them the exported energy of the products of oyste mushroom occupies 65 4%,and the N,P2O5 and K2O of the import export system basically maintain the nutrient balance. It is regarded that this courtyard ecosystem is a highly productive and considerably beneficial system and thus has important realistic significance in directing the construction of the rural courtyard ecosystem in this region.

关 键 词：庭院生态系统 能量分析 养分循环 农业生态系统 

分 类 号：S181[农业科学—农业基础科学]