摘要
本文分析了一农户生态系统的投能结构、水平、效率和农田养分平衡与物质转化。结果表明：该农户生态系统能量和物质的投人均以有机为主，农田土壤库中氮、磷、钾均有盈余。由于系统内物质的反馈，能量转换率和饲料转化率较高。
The structure,level and efficiency of input as well.as farmland nutrient balanceand material transformation in a household were analysed in this paper. Results showed thatenergy and materials input were mainly organic. There were surplus of nitrogen,phosphorusand potasum in the farmland system. Energy and Feed conversion rate was higher because ofthe feed back of materials in the system.
出处
《沈阳农业大学学报》
CAS
CSCD
1996年第2期166-169,共4页
Journal of Shenyang Agricultural University
关键词
生态系统
能流
物流
辽宁
ecosystem, energy, material flowe
