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应该说,现存的每一种植物都先天程度不同地具有抗虫性,否则,它早就从地球上消失了。而人为利用作物抗虫性防治害虫的事例在十九世纪就有了,此后也开展了一些研究工作。由于本世纪四十年代以DDT为代表的化学农药的开发和应用,不少人便片面地认为虫害问题可用化学药剂解决,致使作物抗虫性研究利用工作一度进展缓慢。继六十年代末“有害生物综合治理(IPM)”指导思想的提出,才又加快了这一工作的进程,并已取得很大的
It should be said that each of the existing plants is inherently insect-resistant to varying degrees, otherwise it has long since disappeared from the earth. In the nineteenth century, however, man-made use of crop pests to control pests has also been followed by some research work. Due to the development and application of chemical pesticides represented by DDT in the 1940s, many people think that pest problems can be solved by chemical agents. As a result, research and utilization of crop pest resistance has been slow for some time. After the proposal of the guiding ideology of “integrated pest management (IPM)” in the late 1960s, the progress of this work has been accelerated and great progress has been made