种衣剂拌种对小麦病虫害的防治效果

研究表明，种衣剂拌种比不拌种的晚出苗１－２天，但出苗整齐，麦苗矮壮；种衣剂拌种可明显推迟小麦白粉病的始发期，并减低其在田间的流行速率和强度，抽穗开花期防效仍在９０％以上；对小麦秆黑粉、条锈病、纹枯病和地下害也有一定防效；种衣剂拌种比不抖种的小麦穗粒数增加７．７－１３．９位，千粒重提高３－７ｇ，每公顷增产达１５．３－４４．９％；以种衣剂１４号（２２％）的效果最好，种衣剂１４号（８％）次之。

The Effect of Dressing with Seed Coating Formulations on Controlling of Winter Wheat Diseases and Pests

Dressing with seed coating formulations can make seedlings came out later for one or two day,but help the seedlings to emerge evenly and grow sturdy. The seed dressing can postpone obviously beginning stage of wheat powdery mildew and reduce epidemic speed and intensity of it on the wheat field. Relative control effect is over 90% at heading and flowering stages. There are certain control effect on wheat stem smut, wheat yellow rust, wheat sheath blight and undergroulld pests, but the control effect is relatively poor on aphid and leaf rust of late stage.Seed dressing has increased 7.7-13.9 of wheat ear grain numbers,3-7 gram grain weight,15.3%-44.9% per mu in yield.Effect of No 14(22%) is the best in them, and No. 14 (8%) comes second.