一、生态防治的概念研究生态防治,首先要搞清农业生态系统。农业生态系统是指一个地区,经过人类农业生产活动所形成的生态环境。在农业生态系统中,生物和非生物参与了整个物质能量的转化和循环。这些生物与非生物之间、生态与环境之间,在人们的生产活动以及自然条件的影响下,构成了相互制约和相互依存的不可分割的统一体。在这个整体中,例如害虫与天敌、病菌与寄主经常保持着一个动态平衡关系,就叫生态平衡。生态平衡常常由于各种因素的作用而发生变化。有的变为有利于病菌、害虫的繁殖,就破坏了生态平衡;有的变为有利于天 First, the concept of ecological control Ecological research, we must first find out the agricultural ecosystem. Agricultural ecosystem refers to an area, after the formation of human ecological activities of agricultural production. In agro-ecosystems, both living and non-living creatures participate in the transformation and circulation of the entire material energy. These biological and non-living things, between the ecology and the environment, and under the influence of people’s production activities and natural conditions, constitute an inalienable unity of mutual restraint and interdependence. In this whole body, such as pests and natural enemies, bacteria and host often maintain a dynamic balance, called ecological balance. Ecological balance often changes due to a variety of factors. Some become conducive to germs, pests breeding, it undermined the ecological balance; some have become conducive to the days