以商薯19为对照,对11个(含对照)淀粉型甘薯品种开展引种鉴定.结果表明,渝薯27、渝薯17、渝薯15产量与对照相当,但薯干产量、淀粉含量、淀粉产量均极显著增产,适宜种植并加工淀粉及三粉产品;其余参试品种中,有的没有产量优势,有的薯干产量、淀粉含量、淀粉产量没有优势,建议淘汰.

Experiments were conducted in two areas,i.e Sihong County and Xinghua City,Jiangsu Province,with amino-acid fertilizer to explore the effect on plant photosynthetic characteristics,agronomic characters,yield and quality.The results showed that spraying amino-acid fertilizer significantly increased the leaf SPAD value,net photosynthetic rate(Pn),the maximum quantum yield of PSⅡ(φPo)and the probability that a trapped exciton moves an electron into the electron transport chain beyond Q-A(Ψo).However,it depressed heat dissipation(φDo)of PSⅡ reaction center.Among them,φPo value of Sihong soybean variety'Gaofeng 1'increased 9.5%,and Ψo value of Xinghua soybean variety'Dadouwang'increased 23%.It also significantly improved the yield of soybean,100-seeds weight of'Gaofeng 1'increased 10%,yield per plant increased 39%,yield per m2 increased 64%;and 100-seeds weight of'Dadouwang'increased 8.6%,yield per plant increased 22.6%,yield per m2 increased 22%.And the amino-acid fertilizer treatment improved the content of vitamin C,soluble sugars,free amino-acid and protein.