从三千余种真菌和放线菌中选制了数种内吸抗菌素。其中“内疗素”对光、热、酸等环境因子非常稳定。0.1—0.025％浓度的粗制品浸洋麻种子6—24小时,可以渗入种胚内部,彻底杀灭炭疽病菌。“内疗素”有減少和延緩洋麻种子发芽的药害,但加用硫酸铜(0.75％)后,即可解毒,且不影响“内疗素”的内吸杀菌效果。經过处理的种子,分别在五个不同場、社种植,全年末出現炭疽病株,而离2.5公里以外的对照区,发病率高达100％。 Several kinds of systemic antibiotics were selected from more than 3,000 kinds of fungi and actinomycetes. Among them, “Endothelin” is very stable to light, heat, acid and other environmental factors. 0.1-0.025% concentration of the crude product immersed in kenaf seeds 6-24 hours, you can infiltrate the embryo inside, completely kill anthrax bacteria. “Endothelin” has the effect of reducing and retarding the germination of kenaf seed, but adding copper sulphate (0.75%) can detoxify and does not affect the internal bactericidal effect of “endothelin”. The treated seeds were planted in five different fields and communities, and anthrax strains appeared at the end of the year, while the incidence rate was as high as 100% from the control area 2.5 km away.