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2 大力发展生物防治技术 利用生物的天敌,防治蔬菜病虫害,做到以虫治虫,以菌治菌,以菌治虫,既可达到防治蔬菜病虫害的目的,又可不用或少用化学农药,减少污染,减轻毒性,是发展无公害蔬菜生产的先进措施。2.1 坚持以菌治虫和以虫治虫 利用杀螟杆菌、青虫菌、白僵菌、绿僵菌、苏云金杆菌、灭蚜菌和赤眼蜂、七星飘虫等,可有效防治有关蔬菜害虫。比如,利用青虫菌,可防治菜青虫;利用七星瓢虫,
2 vigorously develop biological control technology to use natural enemies of biological prevention and control of vegetable pests and diseases, so as to pest control, bacteria to bacteria, bacteria pest control, both to prevent pests and diseases of vegetables purposes, but also no or less chemical pesticides to reduce pollution , Reduce toxicity, is the development of pollution-free vegetable production of advanced measures. 2.1 adhere to the bacteria and insects pest control worm insecticide the use of Chromobacterium, caterpillars, Beauveria bassiana, Metarhizium, Bacillus thuringiensis, insecticides and Trichogramma, seven starflies, etc., can effectively control the vegetable pests. For example, the use of coccidian bacteria, cabbage can prevent Pieris; use Ladybird,