甘薯新品种泉薯76特性鉴定与高产机理研究初报

鉴定了抗瘟粉用型甘薯新品种泉薯76的主要特征特性及其高产机理，旨在为其推广应用提供参考。多年多点试验结果表明，泉薯76具有较好的丰产性，平均鲜薯产量在33．683～40．817t／hm2，为对照种金山57鲜薯产量的93％～130％；平均薯干产量在9．320～11．429t／hm2，为对照种的97．5％～139．1％；平均淀粉产量在5．594～7．143t／hm2．比对照增产1．7％～42．2％。特性研究表明，泉薯76全生长期平均叶面系数为3．739，比对照种金山57高26．8％；平均净同化率为2．724g／（m2·d），比对照高15．2％；叶面系数和净同化率均较高是其高产的最显著的生理特性。此外，泉薯76抗薯瘟病和蔓割病；薯块干物率约28．0％，比金山57高1．1～1．7个百分点；出粉率为16．6％～17．2％，比金山57高1．0～2．8个百分点；鲜薯蒸熟食用，质地细腻，味道香甜，综合食味评分优于金山57；薯块具有良好的耐贮性能和萌芽性能。因此，泉薯76可作为优质食用型和淀粉加工型品种在生产上应用．

A Preliminary Report on Characteristics Identification and High Yielding Mechanism of Sweetpotato Variety 'Quanshu76'

A preliminary report on characteristics identification and high yielding mechanism of sweetpotato variety quanshu76 was described in order to give some references for its production.Trials in different years showed that Quanshu76 had superior characteristics of high and steady yield;The average yields of fresh root were between 33.683~40.817 t/hm2,being Jinshang57's(CK's) 93%~130%;the average yields of dry root were between 9.320~11.429 t/hm2,being the CK's 97.5%~139.1%;The average yields of starch were bet...