黑龙港地区农业生态系统发展模式的典型研究

A STUDY ON DEVELOPMENT MODEL OF AN TYPICAL AGROECOSYSTEM IN HEILONGGANG REGION

Based on Qiuzhuang village, the changes in flow path and efficiency of energy, matter and founding were analysed in the process of productivity increase and structure change of agroecosystem, to reveal the basic laws of agro-ecosystem evolution in this region. The results showed that Qiuzhuang has formed a preliminary agroecosystem model adapted to local resources. The adjustment of production structure was the inevitable requirement for system development and the adjusted structure could promote a large scale increase in system productivity. By increasing material input and optimizing technology, both of system productivity and resources effectiveness of production could increase simultaneously. This provided an basis for getting better benefit by increasing input under the high production conditions.