The invention provides a compound preparation for preventing and treating diseases and
insect pests of
angelica sinensis and reducing
bolting rate of
angelica sinensis as well as a preparation methodand application of the compound preparation, and belongs to the technical field of
agricultural plant protection, the compound preparation comprises is Isabion, a first component and a second component, wherein the first component is prepared from thiabendazole,
fludioxonil and
metalaxyl-M; the second component is prepared from
cyantraniliprole and
thiamethoxam. The compound preparation can prevent and treat diseases and
insect pests of
angelica sinensis; in addition, the photosynthetic rate and
photosynthesis intensity can be improved, the life
vitality of angelica sinensis is improved, the resistance of angelica sinensis to high-temperature and drought environments is improved, the growth and development of angelica sinensis roots are promoted, better
nutrient absorption is facilitated,the
nutrient absorption capacity is enhanced, angelica sinensis roots are luxuriant in leaf
reproduction, the
bolting rate is reduced, and finally the purposes of
fertilizer and
pesticide reduction, yield and income increase and the like are achieved. Moreover, the compound preparation is low in cost, simple to operate, capable of achieving reduction and
synergy of chemical fertilizers and pesticides and increasing both production and income, and suitable for large-area popularization.