柑桔果实贮藏期间病害较多,尤以绿霉病(Penicillium digitatum)和青霉病(P.tialicum)引起的桔果腐烂最为严重。近年来,普遍使用托布津及多菌灵等苯并咪唑类药剂防治桔果贮藏期病害,而青、绿霉病菌对这类药剂很快产生了抗药性,药效已大为下降。双胍盐是一类新型的杀菌剂。据报道,它对贮藏期柑桔具有良好的防腐效果,并对防治酸腐病(Geotrichum candidum)有特效,对抗苯并咪唑类的青、绿霉菌株也有较好的防效。双胍盐类的培福朗(Befran)和开拿白(Kenopel)是低毒、低残留农药,它们 Citrus fruits have more diseases during storage, especially orange decay caused by Penicillium digitatum and P.tialicum. In recent years, the widespread use of topiramate and carbendazim and other benzimidazole agents prevent and cure the disease of orange fruit, and green and green mold bacteria quickly produce resistance to such agents, the efficacy has been greatly reduced. Biguanide salts are a new class of fungicides. It has been reported that it has good preservative effect on citrus during storage and has special effects on the prevention and treatment of acid-rot disease (Geotrichum candidum), and also has good anti-benzotriazole and cyanobacteria strains. Befran and Kenopel, which are biguanide salts, are low-toxicity, low-residue pesticides that