沈阳农业大学学报2017，Vol.48Issue(2)：152-158,7.DOI:10.3969/j.issn.1000-1700.2017.02.004
施氮水平对不同马铃薯品种生长发育及品质性状的影响
Effects of Nitrogen Fertilizer Application Rate on Growth, Development and Quality in Potato
摘要
Abstract
In order to understand the characteristic of nitrogen (N) uptake and utilization and provide guidance for fertilization in accordance with varieties and high N utilization efficiency (NUE),2 potato (Solanum tuberosum L.) varieties were selected to analyze their genotype differences of NUE under the different N fertilization condition. The influence of N fertilizer application on potato dry matter accumulation,yield,NUE and quality were studied in this study using "Dongnong308"and"Yanshu4"varieties as material. The trial was made in the field in the condition of 4 N levels (0,90,180,270kg·hm-2). The main results were as follows:Dry matter weight of the whole plant was improved significant in a certain range. But the proportion of dry matter weight of tuber and the whole plant was reduced with increasing N rate. At mature period, the percentages of dry matter weight of tuber in dry matter weight of whole plant of Yanshu 4 were decreased from 75% to 68% and the percentages of Dongnong308 were decreased from 67% to 55%. Dry matter accumulation of tuber at tuber bulking stage was increased of Yanshu4, but the peak of dry matter accumulation of tuber of Dongnong308 was delayed with the increase of N application rate. N uptake and NUE of Dongnong308 and Yanshu4 were 50.73% and 54.23% respectively,and there was no significant different between them under low N rate (90kg·hm-2).But physiological NUE(142.74kg·kg-1) and N agronomic efficiency(72.41kg·kg-1) of Dongnong308 were higher than that of Yanshu4 (physiological NUE and N agronomic efficiency were 114.78 kg·kg-1 and 62.25 kg·kg-1 respectively).Physiological NUE and N agronomic efficiency of Dongnong308 decreased more evidently than that of Yanshu4 under the medium and high N application rate. In addition, the starch content and vitamin C content were reduced with in increasing of N application, but protein content was improved. From above factors,Dongnong308 belongs to the efficient-inefficient variety of and Yanshu4 belongs to the inefficient-efficient variety.关键词
马铃薯/施氮量/氮素利用率/产量/品质Key words
potato/N application rate/nitrogen utilization efficiency/yield/quality分类
农业科技引用本文复制引用
魏峭嵘,曹敏建,石瑛,陈百翠,张丽莉..施氮水平对不同马铃薯品种生长发育及品质性状的影响[J].沈阳农业大学学报,2017,48(2):152-158,7.基金项目
现代农业产业技术体系建设专项项目(CARS-10) （CARS-10）
