期刊论文

Effects of nitrogen levels on the plant growth,yield and quality of autumn potato in Hunan province

中文

中国瓜菜

1673-2871

2020

33

10

33-38

10.3969/j.issn.1673-2871.2020.10.006

马铃薯化肥农药减施技术集成研究与示范项目(2018YFD0200800) 国家马铃薯产业技术体系项目(CARS-09-ES16)。

本校为第一机构

为研究施氮水平对湖南地区秋马铃薯生长、产量及品质的影响,以‘费乌瑞它’为材料,设置4个施氮水平(0,75,150,225 kg·hm-2)。研究结果表明,施氮量对马铃薯出苗率无明显影响;随施氮量增加,马铃薯株高、SPAD值、净光合速率总体先增加后趋于平稳;随施氮量的增加,马铃薯产量呈先增后减趋势,以施氮量150 kg·hm-2达到最高,较不施氮处理提高60.17%;马铃薯的氮素农学利用率和氮素偏生产力呈下降趋势。随施氮量增加,马铃薯块茎中总糖及淀粉含量呈下降趋势,马铃薯可溶性糖含量呈上升趋势。相关性分析表明,产量与单株块茎质量呈极显著正相关。适当增施氮肥有利于秋马铃薯生长、产量及品质的提高,湖南地区...

The potato variety‘Favorita’was used as the material and four nitrogen levels(0,75,150,225 kg·hm-2)were set to study the effects of nitrogen application rate on the growth,yield and quality of autumn potato in Hunan province.The results showed that the plant height,SPAD value,and net photosynthetic rate were generally increased firstly and then stabilized with the increasing of the nitrogen application.Potato yield increased first and then decreased with the increase of nitrogen application.The yield reached the maximum when nitrogen was app...