过去,在使用化学农药防治作物病害的时候,人们总认为治病不如灭虫的效果好。这是因为绝大多数害虫是在作物体外进行侵害活动,只要及时喷药,它们就会中毒死亡。而作物的病害,主要是由病原菌或病毒两大类寄生物侵入作物体内引起的。在内吸杀 In the past, when using chemical pesticides to prevent crop diseases, people always think that the effect of treatment is better than that of pest control. This is because the vast majority of pests are invaded outside the crop, and they will be poisoned if they are sprayed on time. The crop disease, mainly caused by pathogenic bacteria or viruses invade the body caused by two major types of parasites. Kill inside