苏云金杆菌(简称Bt)杀虫剂是目前世界上产量最大的微生物杀虫剂。它对水稻,蔬菜、果树、茶叶、林木等农林植物的鳞翅目昆虫有很强的毒杀力。长期大量使用化学农药,农产品中易残留化学农药,且对环境造成污染。而Bt相对于化学农药来说,它具有对人体健康无损,对生态环境无害,不产 Bacillus thuringiensis (Bt) insecticide is the world’s largest production of microbial pesticides. It is very toxic to rice, vegetables, fruit trees, tea, trees and other agricultural and forestry Lepidoptera insects. Long-term large-scale use of chemical pesticides, agricultural chemicals easily residual chemical pesticides, and pollute the environment. And Bt relative to chemical pesticides, it has no damage to human health, harmless to the environment, no production