和农作物害虫作斗争,战术多种多样。这里单讲生物治虫,就是利用有益的生物消灭有害的昆虫。那些是治虫的生物?种类多得很,择其较具应用价值的有鸟类、蛙类,捕食昆虫和寄生昆虫,以及病原微生物。只要注意保护和繁殖它们,利用得当,就能成为人类义务的灭虫能手。据动物学家的研究,大山雀、燕子、杜鹃、黄鸜、啄木鸟、灰顶伯劳……,这些常见的鸟类,都 Fight against crop pests and have a variety of tactics. Here to talk about biological pest control, is the use of beneficial organisms to eliminate harmful insects. Those who are pest control organisms? Many more species, choose their more valuable applications are birds, frogs, predators and parasitic insects, and pathogenic microorganisms. As long as you pay attention to the protection and breeding of them, they can become the exterminators of human obligations with proper use. According to the study of zoologists, big tits, swallows, rhododendrons, yellow jackals, woodpeckers, ash top Shrike ..., these common birds are