种子包衣是近年来在生产上广泛应用的增产措施。为了摸清包衣种子对小麦的壮苗及增产效果，我们自１９９７年以来连续进行了多点次的试验示范。１　材料与方法供试小麦品种为豫麦１８号；种衣剂为中原种衣剂厂生产的种衣剂１７号；采取机械包衣。试验设包衣与不包衣（ｃｋ） Seed coating is widely used in production in recent years to increase production. In order to find out the effect of coated seed on strong seedling and yield increase of wheat, we have carried out a series of demonstration experiments since 1997. 1 Materials and Methods The wheat varieties tested were Yumai 18; the seed coating agent was the seed coating agent No. 17 produced by the Zhongyuan seed coating factory; and the mechanical coating was adopted. Test set with no coating (ck)