生物复合种衣剂对4种牧草种子萌发和幼苗生长的影响

Effect of a Biological Complex Seed-coating Agent on the Germination and Seedling Growth of Four Pasture Grass

为探索2%戊唑醇生物复合种衣剂提高牧草发芽率和生长量的可行性,对‘超音速’紫花苜蓿(Medicago sativa‘Supersonic’)、光叶紫花苕(Vicia villosa var.glabresens)、白三叶草(Trifolium repens)、‘特高’黑麦草(Lolium multiflorum‘Tetragold’)进行包衣。结果表明,上述牧草分别按1∶40,1∶60,1∶70,1∶90包衣促进萌发效果最好,且无霉变现象。前3种牧草与对照相比,苗长分别增加15.86%,10.26%,18.08%;地上部分鲜重分别增加15.66%,42.49%,97.26%。因此该种衣剂可按适宜包衣剂量对这4种种子进行处理。

In order to improve the germination rate and growth of pastures,2% tebuconazole biological complex seed-coating agent were used for coating Medicago sativa‘Supersonic＇,Vicia villosa var.glabresens,Trifolium repens,and Lolium multiflorum ‘Tetragold＇.The results showed that the seeds for the four pastures coated at 1∶40,1∶60,1∶70and 1∶90,respectively have the best increase of germination.The coated seeds were not rotted.Compared with the control,the seed-coating agent had significant effect on growth promotion,especially on M.sativa,V.villosa var.glabresens and T.repens.The seedling length and above ground fresh weight increased 15.86%,10.26%,18.08%;and 15.66%,42.49% and97.26%,respectively.Thus the seed-coating agent could be used with optimum dose for coating M.sativa,V.villosavar.glabrescens,T.repens,and L.multiflorum.