What kind of seed coating agent can be used for secondary coating of corn seeds to prevent head smut?

There are basically three kinds of corn coating agents, one is insecticide, and the use of carbofuran to control underground pests is not prohibited in China. It can be used as a coating, but it is forbidden to be used on crop leaves. Imidacloprid can also be used as an insecticide, but it is not as magical as Gao Qiao said, just an insecticide. The second is to control corn head smut and smut. Tebuconazole is the first choice, and the effect of tebuconazole alone is not as good as other triazole fungicides (such as triadimefon). Another bactericide is used to prevent seedling diseases such as bacterial wilt and damping-off at seedling stage, and thiram is commonly used, which is Gramoxone-pentane on the market. The effect of tebuconazole mentioned above is not as good as that of other triazole fungicides such as triazolone, but it is unsafe for other triazole fungicides except tebuconazole to germinate normally within 8- 12 days if the temperature is high in spring, and triazolone is fine. If they germinate for more than half a month in bad weather, such as 20 15 climate, it is not safe. Tebuconazole does not inhibit germination, and the combination of tebuconazole and thiram makes up for the poor effect of tebuconazole alone. The combination of them is more effective than triadimefon in resisting head smut. If the three coating agents match, there is no need for secondary coating. If secondary coating is needed, only drought-resistant water-retaining agent containing fulvic acid and rooting agents of various trace elements should be selected, and drugs should not be selected to avoid bud burning.