Effect of hormone on flower and fruit protection of jujube

Spraying 5 parts per million gibberellin in the early flowering stage of jujube, that is, when the fruiting branches bloom 5 to 8 flowers, can significantly increase the fruit setting rate. In order to improve the effect of gibberellin use, adhesives such as washing powder can be added, and 0.3 to 0.5% urea solution can be sprayed at the same time. In addition, spraying 2.4 parts per million of 2.4 parts per million in young fruit can reduce fruit drop. However, when the concentration of 2.4 murp is more than 80 parts per million, it will cause drug damage, and in serious cases, it will cause falling leaves and fruits.