种子处理防治小麦全蚀病试验研究

Study on Seed Treatment Control to Take-all of Wheat

小麦全蚀病是一种典型的土传性病害。种子包衣和拌种是防治该病害最为经济有效的途径。6种包衣拌种剂对小麦全蚀病的防病增产效果试验表明,以17%多·克·酮种衣剂2000g/100kg种子和种衣剂17号2000g/100kg种子对小麦出苗无不良影响且对全蚀病的防病效果较好,其根部病指防效和白穗率防效分别达到55.4%、73.7%和55.7%、64.6%,敌萎丹、适乐时种衣剂防治小麦全蚀病的效果虽不理想,但能促进小麦生长,提高保苗效果,增产作用比较明显,分别达到12.19%和12.90%。粉锈宁拌种虽然防效较好,但影响出苗,保苗效果较差。2%立克秀的防效相对较差且增产作用不明显。

Take-all of wheat is a classical soil-spread disease.Seed-coating and seed-mixing is the best economical and effective approach for controlling it.The result showed by applying 6 seed-coating and seed-mixing formulation to control take-all of wheat that 17% duo.ke.tong and No.17 have no bad effect on growing of wheat seedling both with the dosage of 2 000 g.100kg^(-1) seeds,and better effect on controlling this disease.The corresponding controlling effect of root disease were 55.4% and 55.7%,which of white head were 73.7% and 64.6%.The effect of Difenoconazole and Celest controlling take-all was not too well,but they can promote grow of wheat and there were obviously yield increase of 12.19% and 12.90% than that of untreated check.There was an ideal effect on controlling this disease with Triadimefon.but it reduced obivously the percentage of emergence of seedling.Tebuconazole has no good effect on controlling this disease and enhancing yield.