Rice seed soaking agent and application thereof

The invention belongs to the technical field of agriculture, and relates to a rice seed soaking agent and application thereof, particularly a seed soaking agent capable promoting rice seeds to quickly rooting and germination after straws directly return to the field, and application thereof. Every 1L of solvent contains the following solute components: 100-150mg of gibberellin, 25-50mg of indoleacetic acid, 0.1-0.5mg of abscisic acid, 500-1000mg of ammonium bicarbonate and 100-500mg of zinc sulfate. The rice seed soaking agent regulates the physiologic and biochemical functions of the rice seeds by the chemical control technique against the direct sowing planting mode of rice, promotes the rice seeds to quickly rooting and germination after the straws directly return to the fertilized filed, can promote growth development of the rice and improve the quality of the rice due to the components in the seed soaking agent, and has obvious yield increase effect; and the yield increase rate of the rice is up to higher than 10%.