品種名稱：莆薯90

選育單位：福(fu)建省莆田市農(nong)業(ye)科學研(yan)究所

品種來源：臺(tai)引2號/湘(xiang)薯75-55

特征特性：該品種株(zhu)型短(duan)蔓(man)半直立(li)，單株(zhu)分(fen)枝數(shu)6-10條，成葉心(xin)形，成葉、莖均綠色(se)，頂葉綠帶紫(zi)色(se)，葉脈紫(zi)色(se)，蔓(man)較粗；單株(zhu)結薯(shu)(shu)2-4個，薯(shu)(shu)塊下紡綞形，薯(shu)(shu)皮紅色(se)、薯(shu)(shu)肉桔紅色(se)。省區(qu)試兩年平均：曬干率23.98%，比(bi)對照(zhao)金山57低(di)1.95個百(bai)分(fen)點；出粉(fen)率13.93%，比(bi)對照(zhao)低(di)1.21個百(bai)分(fen)點；食味評(ping)分(fen)80.1分(fen)，比(bi)對照(zhao)高0.1分(fen)。省區(qu)試抗病性(xing)鑒定綜合(he)評(ping)價為中抗蔓(man)割病，中感薯(shu)(shu)瘟(wen)病。耐貯(zhu)藏性(xing)一般。

產量表現：2006年參(can)加省甘(gan)薯(shu)(shu)(shu)區試(shi)，平(ping)均(jun)鮮(xian)薯(shu)(shu)(shu)畝產(chan)(chan)2954.92公(gong)斤，比對照(zhao)金(jin)山57增(zeng)產(chan)(chan)6.70%，達極顯(xian)著(zhu)水平(ping)；平(ping)均(jun)薯(shu)(shu)(shu)干(gan)(gan)畝產(chan)(chan)718.89公(gong)斤，比對照(zhao)減產(chan)(chan)1.29%，未達顯(xian)著(zhu)水平(ping)。2007年續試(shi)，平(ping)均(jun)鮮(xian)薯(shu)(shu)(shu)畝產(chan)(chan)2767.32公(gong)斤，比對照(zhao)增(zeng)產(chan)(chan)6.00%，達顯(xian)著(zhu)水平(ping)；平(ping)均(jun)薯(shu)(shu)(shu)干(gan)(gan)畝產(chan)(chan)652.52公(gong)斤，比對照(zhao)減產(chan)(chan)1.87%，未達顯(xian)著(zhu)水平(ping)。兩年平(ping)均(jun)：鮮(xian)薯(shu)(shu)(shu)畝產(chan)(chan)2861.12公(gong)斤，比對照(zhao)增(zeng)產(chan)(chan)6.36%；薯(shu)(shu)(shu)干(gan)(gan)畝產(chan)(chan)685.71公(gong)斤，比對照(zhao)減產(chan)(chan)1.57%。2008年生產(chan)(chan)試(shi)驗，平(ping)均(jun)鮮(xian)薯(shu)(shu)(shu)畝產(chan)(chan) 2389.4公(gong)斤，比對照(zhao)金(jin)山57增(zeng)產(chan)(chan)0.27%。

栽培技術要點：早(zao)薯(shu)(shu)于(yu)5月(yue)中旬至6月(yue)下(xia)旬栽(zai)(zai)插，晚薯(shu)(shu)于(yu)8月(yue)上(shang)旬前栽(zai)(zai)插，早(zao)薯(shu)(shu)畝(mu)(mu)栽(zai)(zai)插3000-3500株，晚薯(shu)(shu)畝(mu)(mu)栽(zai)(zai)插3500-4500株。栽(zai)(zai)插后(hou)(hou)7-10天(tian)施(shi)(shi)點頭肥，一般(ban)畝(mu)(mu)施(shi)(shi)用(yong)尿(niao)素5公(gong)(gong)斤(jin)。早(zao)薯(shu)(shu)栽(zai)(zai)插后(hou)(hou)25-30天(tian)施(shi)(shi)夾(jia)(jia)邊(bian)肥，結合中耕除(chu)草，一般(ban)畝(mu)(mu)施(shi)(shi)尿(niao)素7.5-10公(gong)(gong)斤(jin)，三元復合肥（氮(dan)、磷、鉀含量各(ge)15%）20-30公(gong)(gong)斤(jin)。晚薯(shu)(shu)于(yu)栽(zai)(zai)插后(hou)(hou)20-25天(tian)施(shi)(shi)用(yong)夾(jia)(jia)邊(bian)肥，施(shi)(shi)肥方法與用(yong)量與早(zao)薯(shu)(shu)相(xiang)似。干旱應及時灌水。及時防治病蟲害。全生長(chang)期宜(yi)掌握在140-160天(tian)。

省農作物品種審定委員會審定意見：莆薯90屬食(shi)飼兼用型甘薯新(xin)品種(zhong)。鮮薯產量較高，薯干產量與(yu)對照(zhao)(zhao)金山57相當(dang)；曬(shai)干率和(he)出粉率均比對照(zhao)(zhao)低，食(shi)味品質(zhi)與(yu)對照(zhao)(zhao)相當(dang)；中抗蔓割病，中感薯瘟病。適宜(yi)福建(jian)省非薯瘟病區種(zhong)植，栽培(pei)上宜(yi)種(zhong)植脫毒種(zhong)苗，保證全生育期150天左右，注意防治薯瘟病。經審核，符(fu)合福建(jian)省農作(zuo)物品種(zhong)審（認(ren)）定(ding)規定(ding)，通(tong)過審定(ding)。