4种拌种剂对食用向日葵种子活力与幼苗生长的影响

Effects of Four Kinds Seeddressing Agents on Seed Vigor and Seedling Growth of Edible Sunflower

采用噁霉·福美双、多福克、吡虫啉、种盾4种拌种剂,对食用向日葵材料3939进行拌种处理,通过室内种子发芽试验,对种子发芽势、发芽率、根冠比、苗长以及干物质积累进行测定,分析农药对种子活力与幼苗生长的影响。结果表明,噁霉·福美双、多福克、吡虫啉、种盾均能提高种子活力,噁霉·福美双、种盾与多福克、吡虫啉、对照比较能显著提高种子发芽率(P<0.05)。噁霉·福美双、吡虫啉、种盾对幼苗生长没有明显影响,多福克与对照比根冠比增加显著(P<0.05),多福克有促进幼苗根系生长作用。

In order to reduce the pesticide residue in edible sunflower field,seedling diseases,insect pests and seedling deficiency scheduling problem,four kinds of seeddressing agents,emeifumishaung,duofuke,imidacloprid and zhongdun were used to configure the pesticide ratio.The seed germination rate,germination percentage,root/shoot ratio,dry matter content and dry matter accumulation were determined by seed dressing of sunflower seeds,and the effects of pesticides on seed vigor and seedling growth were analyzed.The results showed that emeifumshaung,duofuke,imidacloprid and zhongdun could improve the seed vigor.They could significantly improve seed germination rate（P〈0.05）than the CK.Emeifumeishaung,imidacloprid and zhongdun had no significant effect on seedling growth,and the different concentrations of duofuke agents in root cap could promote the root growth of seedlings（P〈0.05）.