排种密度对紫甘薯品种齐宁20号出苗数量及薯苗质量的影响  

Effects of storage-root arrangement density on seedling number and seedling quality of purple sweetpotato variety Qining 20

作　　者：井水华 范建芝[1] 冯维清 周红梅[1] 王洪芹[1] 郑鹏[1] 杨淑娟[1] 段成鼎[1] 黄成星[1] Jing Shuihua;Fan Jianzhi;Feng Weiqing;Zhou Hongmei;Wang Hongqin;Zheng Peng;Yang Shujuan;Duan Chengding;Huang Chengxing(Jining Academy of Agricultural Sciences,Jining 272031,Shandong,China)

机构地区：[1]济宁市农业科学研究院,山东济宁272031

出　　处：《江苏师范大学学报（自然科学版）》2023年第3期41-44,共4页Journal of Jiangsu Normal University：Natural Science Edition

基　　金：财政部和农业农村部:国家现代农业产业技术体系资助项目(CARS-10);山东省农业良种工程项目(2020LZGC004)。

摘　　要：齐宁20号是优质食用型紫甘薯品种,萌芽性好,出苗量多,薯苗茎较细.为了提高齐宁20号的薯苗品质,研究不同排种密度对出苗数量和薯苗质量的影响.结果表明:适当降低排种密度可以获得较高的百苗质量,与常规排种密度15.0 kg/m^(2)相比,排种密度为12.5、10.0 kg/m^(2)时,采苗数量分别增加38.46%、21.79%,总投入减少8.27%、23.89%,纯收益增加76.05%、58.58%.齐宁20号适宜稀排,排种密度为10.0~12.5 kg/m^(2)时,既可以获得健康壮苗,又可以获得更高的经济效益.Qining 20 is a high-quality edible purple sweetpotato variety with good germination characteristics,more sprouts and thinner stem.In order to improve the seedling quality of Qining 20,the effect of different root arrangement densities on seedling numbers and qualities was studied.The results showed that the higher 100-seedling weight could be obtained by properly reducing seed density.Compared with the conventional storage-root arrangement density(15.0 kg/m^(2)),the number of seedlings treated with storage-root arrangement density of 12.5,10.0 kg/m^(2) increased by 38.46% and 21.79%,respectively.The total input decreased by 8.27% and 23.89%,and the net income increased by 76.05% and 58.58%,respectively.Qining 20 is suitable for storage-root arrangement by sparse row,and the healthy strong seedlings and the higher economic benefits can be obtained when the root arrangement density is 10.0-12.5 kg/m^(2).

关 键 词：甘薯 排种密度 薯苗质量 

分 类 号：S531[农业科学—作物学]