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防治农作物病、虫、草害的方法,一般分为耕作防治法、物理防治法、化学防治法和生物防治法四种。生物防治具有效果持久,对人、畜安全,不污染环境和避免害虫产生抗药性等优点,目前已引起世界各国的重视。本文将国内外生物防治研究与开发概况综述如下:一.以菌治虫:目前利用较广的病原微生物主要是细菌和真菌,其次是病毒、原虫和线虫。西欧各国、美国、苏联等制造的 B.T(苏云金杆菌制剂)类菌剂和核多角体病毒等病制剂已用于生产,日本也于近年利用 B.T.制
Prevention and treatment of crop diseases, insects, grass damage methods are generally divided into farming control law, physical control law, chemical control law and biological control of four. Biological control has the advantages of lasting effect, being safe to human beings and animals, not polluting the environment and avoiding the emergence of drug resistance of pests and so on. Currently, it has attracted the attention of all countries in the world. This article summarizes the research and development of biological control at home and abroad as follows: I. To control bacteria: currently widely used pathogenic microorganisms are mainly bacteria and fungi, followed by viruses, protozoa and nematodes. B.T (Bacillus thuringiensis) preparations and nuclear polyhedrosis virus preparations manufactured in Western European countries, the United States, the Soviet Union and the like have been used for production, and Japan has also used B.T.