Mango tree florescence postponing method

The invention provides a mango tree florescence postponing method. The method includes the following steps that (1) neelum trees with the tree-age ranging from 12 years to 14 years and with the basically same growth vigor and tree body nutrition are selected; (2) the local precise florescence time of mango trees is determined; (3) a urea solution with the volume concentration ranging from 4.8% to 5.3% is prepared; (4) the urea solution with the volume concentration ranging from 4.8% to 5.3% is used for spraying mango tree crowns 7 days to10 days before mango flower buds are expanded till water drops down from leaf apexes. By means of the method, the mango tree florescence time is postponed by 15 days to 23 days, the peak of risks caused by late spring coldness can be avoided effectively, pollination fertilization is facilitated, the fruit-setting ratio is increased, and the yield is increased; the powdery mildew generation rate is reduced, the pesticide consumption is reduced accordingly ...