中文摘要：

为了提高牧草种子发芽率、发芽速度和幼苗素质,选用紫花苜蓿（Medicago sativa）、光叶紫花苕（Vicia villosa var.glabresens）、白三叶草（Trifolium repens）、黑麦草（Lolium multiflorum）等4种常见牧草种子,采用2%戊唑醇生物复合悬浮种衣剂（BCSA）、39%精甲霜灵·嘧菌酯、600 g/L吡虫啉和35%噻虫嗪等4种悬浮种衣剂按最佳剂量包衣。室内试验结果表明,BCSA包衣处理除黑麦草无变化外,其余3种牧草种子发芽率与裸种对照、39%精甲霜灵·嘧菌酯、600 g/L吡虫啉和35%噻虫嗪种衣剂包衣种子发芽率相比,紫花苜蓿依次提高9.55%、9.09%、39.68%、6.45%,光叶紫花苕依次提高66.66%、30.18%、43.78%、7.32%,白三叶草依次提高31.25%、12.51%、17.75%、12.51%。在盆栽试验中,用BCSA处理的种子促生长效果最为明显,紫花苜蓿、光叶紫花苕、白三叶草、黑麦草与裸种对照相比,根长依次增加30.29%、17.12%、33.80%、7.36%;苗长依次增加15.86%、10.26%、18.08%、5.31%;地上部分鲜重依次增加15.66%、42.49%、97.26%、15.88%。本实验室研制的生物复合种衣剂对紫花苜蓿、光叶紫花苕、白三叶草、黑麦草种子进行处理后,能较好地促进种子萌发和植株生长。

英文摘要：

To improve the seedling quality, germination rate and speed of 4 herbage species, Medicago sativa,Vicia villosa var. glabrescens, Trifolium repens and Lolium multiflorum, home-made 2% tebuconazole biologicalcomplex seed- coating agent（BCSA）, 39% metalaxyl- M azoxystrobin, 600 g/L imidacloprid, and 35%thiamethoxam were used with best doses for seed coating. The results showed that compared with naked seedcontrol（NSC）, the coated seeds with 39% metalaxyl- M azoxystrobin, 600 g/L imidacloprid, and 35%thiamethoxam, the germination rate of BCSA coated seeds of M. sativa increased by 9.55%, 9.09%, 39.68%and 6.45%, the germination rate of BCSA coated seeds of Vicia villosa var. glabrescens increased by 66.66%,30.18%, 43.78% and 7.32%, and the germination rate of BCSA coated seeds of T. repens increased by 31.25%,12.51%, and 17.75%, 12.51%, respectively, but the germination rate of L. perenne seeds had no change.Compared with the NSC, BSCA had significant effect of growth promotion. Root length of M. sativa, V. villosa var. glabrescens, T. repens and L. multiflorum increased by 30.29%, 17.12%, 33.80% and 7.36%, seedling length increased by 15.86%, 10.26%, 18.08% and 5.31%, and the above- ground fresh weight increased by15.66%, 42.49%, 97.26% and 15.88%, respectively. So BCSA can promote seed germination and plant growth of M. sativa, V. villosa var. glabrescens, T. repens and L. multiflorum.