种植系统优化调控层次及制约因素

The Factors That Affect the Adjustments of the Planting Circle

基于持续发展观点并结合中国经济发展实际 ,从不同层次探讨种植系统优化调控目标、实现途径及制约因素。群体构建和人工辅助能优化是种植系统化调控的核心内容 ,市场机制下多样化种植系统具有生态、经济和社会效益相统一的机能特征。粮食作物是种植系统的主体 ,生产过程对环境的负面效应最突出 ,建立优化调控技术服务体系是实现农业持续发展目标的基本点。

in the case of sustainability, we are trying, by different angles, to better the adjustments in the targets, approaches and the affecting factors in agriculture. There lies the importance of colony-constructing and man-assisting in it; so, the planting system can be optimized, by marketing, in biology, economy and social benefits. However, grain planting is much more concerned traditionally, and it has much side-effect. So, it is very urgent to implement the adjustments so as to keep sustainability in agriculture.