中国马铃薯2026，Vol.40Issue(3)：188-199,12.DOI:10.19918/j.cnki.1672-3635.2026.03.006
施氮量对马铃薯新品种'东农333'产量及品质的影响
Effects of Nitrogen Application Rates on the Yield and Quality of Potato Variety'Dongnong 333'
摘要
Abstract
A field trial was carried out at Xiangyang Base,Harbin,to evaluate the effects of varying nitrogen rates on the agronomic performance,yield,and tuber quality of'Dongnong 333',a newly bred potato variety developed by Northeast Agricultural University,and to determine the optimum nitrogen rate for this variety.Five levels of nitrogen application(pure nitrogen)were set:CK(control)at 0 kg/667m2,C1 at 5 kg/667m2,C2 at 9 kg/667m2,C3 at 13 kg/667m2,and C4 at 17 kg/667m2.Nitrogen application significantly affected the plant height,SPAD value,number of tubers per plant,and tuber weight of'Dongnong 333'.Plant height increased with increasing nitrogen application,generally following the order C4>C3>C2>C1>CK;the number of tubers per plant and tuber weight of'Dongnong 333'were significantly higher in the treatment C3 than in other treatments(except for the number of tubers per plant in C2 and C4).Yield exhibited a parabolic trend with increasing nitrogen application,peaking at 2 816 kg/667m2 under the treatment C3;but the marketable tuber percentage reached its peak at 73.18%under the treatment C2.There were no significant differences in dry matter and starch content among the nitrogen treatments,while reducing sugar content peaked at 0.052%under the treatment C4.In summary,the treatment C3 is the optimal nitrogen application rate for achieving high yields and high quality in'Dongnong 333'.关键词
马铃薯/施氮量/产量/品质Key words
potato/nitrogen application rate/yield/quality分类
农业科技引用本文复制引用
申国萍,张宇琛,孟丹,石瑛..施氮量对马铃薯新品种'东农333'产量及品质的影响[J].中国马铃薯,2026,40(3):188-199,12.基金项目
现代农业产业技术体系专项资金(CARS-09). （CARS-09）
