摘要：This study was conducted to investigate the effects of different vine cuttings and provide a fast method for production of high-quality sweet potato seedlings.With short vine type‘Ganshu No.2’as an experiment material,biological characteristics of sweet potato seedlings were investigated by setting three vine sections(the ingle-node section,dual-node section and three-node top bud section)using three kinds of substrates(red soil,leaf mould and pond sludge).The results showed that the dual-node vine section plus leaf mould treatment sprouted earliest(3 d)with the highest survival rate(86.6%),root number(9.2 roots)and the longest root length(5.9 cm),compared with other treatments.Therefore,dual-node vine section plus leaf mould plug seedling raising has the characteristics of short sprouting time,high survival rate and low cost.The method could provide seedlings in a short period(20 d),improves sweet potato propagation coefficient and is worth extending and applying.

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