The application discloses a
postharvest citrus biological
preservative and a preservation method and application thereof. The
preservative comprises, in terms of
volume percentage, 40-100% of
lysobacter enzymogenes LE16 autolysis
fermentation liquor, 0-60% of
propanil and 0.1-0.2% of Tween 80. The application further provides application and a method of the
preservative in citrus biological preservation. The biological preservative is mainly the metabolic product of
lysobacter enzymogenes LE16, has obvious biocontrol effect on green mold and green rot, reduces the rot rate of citrus fruits in the preservation process, and does not affect the fruit quality. The autolysis
fermentation liquor is safe, non-toxic, environment-friendly, convenient to produce and can be applied on a large scale. In cooperation with chemical pesticides, the application can greatly reduce the
pesticide application amount and
pesticide residues under the condition of obtaining the same
control effect, and has potential application value in
postharvest citrus preservation.