摘要
研究了岷江上游3种代表性的果粮间作模式生态系统能量输入输出特征。由于结构不合理,辅助能投入效率仅1.15～1.52。3种模式光能利用率为0.661％～1.205％,较对照单作高,潜力较大。应采取果粮间作模式生态系统组分及其结构优化、辅助能投入结构和水平改善、非可食产品就地滞留还田及食物链循环利用等措施进行优化调控。
Characters of energy input and output for three typical fruit tree-grain crop intercropping ecosystems in the upper reaches of the Minjiang River are studied. The re-sults show that the efficiency of the supplementary energy input is only 1.15-1.52 be-cause of the irrational structure of the energy input. The light use efficiency for the three systems are 0.661%-1.205%,which is higher than single planting.Optimal manage-ment such as optimizing the components and structures of the system,improving the sup-plemental energy input and level,returning non-edible products and utilizing food chain cyclically should be carried out.
出处
《生态农业研究》
CSCD
1998年第3期50-54,共5页
Chinese Journal of Eco-agriculture
基金
"八五"中国科学院重点项目
关键词
果粮间作模式
生态系统
能量投入效率
干旱河谷
The upper reach of the Minjiang River,Fruit tree-grain crop intercropping model, Ecosystem, Efficiency of input energy
