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近二十多年来,由于大量地施用化学农药防治病虫草害,产生了环境污染问题,因而生物防治越来越引起人们注意。近年来国内外杂草生物防治进展较快,有的取得了大面积的经济效益,展示了可喜的前景。我国的杂草生物防治工作杂草的生物防治是利用使杂草致病的寄生物、昆虫、草食性鱼类、家禽、牲畜等天敌的生物作用,将某一些杂草的密度控制在经济容许水平之下,不至成灾,而达到防治的目的。
In the recent twenty years, as a result of extensive application of chemical pesticides to control pests and diseases, environmental pollution problems have arisen, and biological control has drawn more and more attention. In recent years, the progress of weed biological control at home and abroad has been rapid. Some have achieved large-scale economic benefits and demonstrated promising prospects. Biological control of weeds in China The biological control of weeds is the use of the biological effects of natural enemies such as parasites, insects, herbivorous fish, poultry, livestock that cause weeds, controlling the density of some weeds to economic allowances Under the level, not to disaster, and achieve the purpose of prevention and treatment.