摘要
加工型马铃薯品种对块茎干物质含量、淀粉含量、还原糖含量等品质指标有严格要求,这些指标与养分供给息息相关。为了解不同加工型马铃薯品种对氮钾肥的偏好,在东北黑土条件下,以‘东农314’和‘东农322’两个自主选育的加工型新品种为供试材料、‘大西洋’为对照,设置常肥、高钾、高钾高氮3个不同的氮钾配比,从块茎膨大期开始取样直至收获,比较分析3个加工型品种块茎干物质含量、淀粉含量、还原糖含量以及粗蛋白含量的差异。‘东农322’在施用常肥N 109.5 kg/hm^(2)、K2O 112.5 kg/hm^(2)时块茎的加工品质较好,‘东农314’和对照品种‘大西洋’对氮钾肥的吸收规律相同,在常肥基础上增施37.5 kg/hm^(2)钾肥可以增加块茎中干物质含量、降低还原糖含量,提升其加工品质。因此,‘东农314’和‘东农322’两个新品种施用合适的氮钾肥均可作为加工型品种推广应用。
Processing potato varieties have strict requirements for tuber dry matter content,starch content,reducing sugar content and other quality indexes,which are closely related to nutrient supply.In order to understand the preference of different processing potato varieties for nitrogen and potassium fertilizer,two new processing potato varieties,'Dongnong 314'and'Dongnong 322',were selected as test materials and the'Atlantic'was used as a control under the conditions of black soil in northeast China.Three different treatments,regular fertilizer application,high potassium application,and high potassium and high nitrogen application,were set up in this experiment.Samples were taken from tuber bulking stage until harvest.The differences of dry matter content,starch content,reducing sugar content and crude protein content in tubers of the three processing varieties were compared and analyzed.The tuber quality of'Dongnong 322'was better when regular fertilization,N 109.5 kg/ha and K2O 112.5 kg/ha,were applied.'Dongnong 314'and control variety'Atlantic'had the same nitrogen and potassium absorption pattern.Additional application of 37.5 kg/ha potassium fertilizer on the basis of regular fertilization increased dry matter content,but decreased reducing sugar content in tubers,improving the processing quality.Therefore,the two new varieties of'Dongnong 314'and'Dongnong 322'could be promoted and applied as processing varieties with appropriate nitrogen and potassium fertilizer application.
作者
宋雪微
商靖雯
杨晓彤
石瑛
SONG Xuewei;SHANG Jingwen;YANG Xiaotong;SHI Ying(College of Agronomy,Northeast Agricultural University,Harbin,Heilongjiang 150030,China;Key Laboratory of Germplasm Enhancement,Physiology and Ecology of Food Crops in Cold Region,Ministry of Education,Harbin,Heilongjiang 150030,China)
出处
《中国马铃薯》
2023年第3期227-235,共9页
Chinese Potato Journal
基金
现代农业产业技术体系专项资金(CARS-09)。
关键词
马铃薯
氮钾配施
干物质
淀粉
还原糖
粗蛋白
potato
combined nitrogen and potassium application
dry matter
starch
reducing sugar
crude protein
