杀死或防治在形成冰冻时起重要作用的细菌,就可使柑桔树、鳄梨树免受冻害,这在大田试验中已取得了令人鼓舞的效果。七八年末,在一次结冰前,对脐橙和鳄梨树喷洒杀菌剂,经过处理的果树,花芽冻坏很 Killing or controlling bacteria, which play an important role in the formation of ice, can protect citrus trees and avocado trees from frost damage, which has yielded encouraging results in field trials. Before the end of Seventy-eight, before an icing, spraying of fungicides on navel oranges and avocado trees, treated fruit trees, flower buds frozen very bad