基金项目国家现代农业产业技术体系建设项目（CARS--.docVIP

基金项目：国家现代农业产业技术体系建设项目（）； 作者简介：胡启国（1982-），男，河南新县，助理研究员，硕士，主要从事甘薯品种试验工作。通讯作者杨爱梅主要从事甘薯品种试验工作。通信地址：476000商丘市胜利东路10号河南省商丘市农林科学院，E-mail:huqiguo1234@126.com。电话均鲜薯产量，较对照增产%，达显著水平，居第四位；平均薯干产量，较对照增产%，达极显著水平，居第位；平均烘干率%，比对照高个百分点。Breeding and Cultivation Techniques of a new purple sweetpotato Cultivar “Shangxu 1” for table use with high quality Hu Qiguo, Wang Wenjing, Chu Fengli, Jiang xiaojun,Yang Ai’mei (Shangqiu Academy of Agriculture and Forestry Sciences, Shangqiu Henan 476000) Abstract:The purple “Shangxu 1” was a new cultivar bred from the generation of the purple “Yuzi 7” as female parent with faire pollination. The results of 2014 to 2015 National New Sweetpotato Cultivar Regional Trail showed that the average fresh root yield was 30592.5 kg/hm2, which significantly increased by 11.72% compared with the control “Ningzi1” and ranked fourth among the competitive cultivars; the average yield of dry matter was 9822kg/hm2, which significantly increased by 25.25% compared with the control and ranked first; the average drying rate was 32.11% which increased by 6.1% compared with the control. The cultivar is also good in its commercial rate, stability yield, germination rate storability, disease resistance, quality and taste. Key word:sweetpotato;new variety;Shangxu 1;Cultivation Technique 近年来，我国甘薯育种取得了巨大的成就，品种也呈现出多元化的特点，随着人们对食品安全的重视以及对甘薯保健价值的认知，甘薯越来越受人们青睐。虽然近年已经选育了一系列食用型紫薯新品种，但在实际生产中仍未出现综合性状良好大面积推广的紫薯品种[1,3]。商徐紫薯1号是继商薯19、商薯6、商薯7、商薯8、商薯9、商薯10、商薯11、商薯12等之后，商丘市农林科学院育成的又一优质甘薯品种。该品种高产、稳产、品质、食味等综合性状良好，对满足市场需求和品种改良研究钧具有一定的意义。为了使优质食用型甘薯新品种“商徐紫薯1号”更好的推广应用，本文介绍该品种的选育过程，产量表现，主要特征、特性与栽培技术[4,9]。 1 选育过程 商徐紫1号是以渝紫薯7号为母本放任授粉，从其后代中系统选育而成的甘薯新品种。母本渝紫薯7号是食用型紫薯，高产、高干、蔓短抗茎线虫病平均鲜薯产量，较对照增产%，达显著水平，居第四位，在个点有个点增产，个点减产；平均薯干产量，较对照增产%，达极显著水平，居第位，个点全部增产；平均烘干率%，比对照高个百分点。品种萌芽性较好，中蔓，分枝数个左右，叶片，顶叶黄绿色带紫边，成年叶叶脉和茎蔓绿色。薯纺锤，紫皮紫肉，结薯集中薯块较整齐，单株结薯个左右，大中薯率花青素平均含量mg /100g鲜薯干基淀粉、还原糠、可溶性糖和粗蛋白含量食味黑斑病4.4 田间管理 栽苗后3天内每公顷用72%都尔75mL，加水30kg土壤表面喷雾进行土壤封闭；也可采取起垄喷施二甲戊乐灵（4500毫升/公顷）及时覆盖黑膜一次性进行。全生育期不翻秧，涝排旱灌，雨后尽量不进地踩踏。 4.5适时收