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Responses of Root Characteristic Parameters and Plant Dry Matter Accumulation, Distribution and Transportation to Nitrogen Levels for Spring Maize in Northeast China

Author

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  • Yang Yu

    (College of Agriculture, Northeast Agricultural University, Harbin 150030, China
    Institute of Crop Cultivation and Tillage, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China)

  • Chunrong Qian

    (Institute of Crop Cultivation and Tillage, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China)

  • Wanrong Gu

    (College of Agriculture, Northeast Agricultural University, Harbin 150030, China
    Institute of Crop Cultivation and Tillage, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China)

  • Caifeng Li

    (College of Agriculture, Northeast Agricultural University, Harbin 150030, China
    Institute of Crop Cultivation and Tillage, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China)

Abstract

Improving nitrogen use efficiency is a significant scientific problem to be solved. Two maize hybrids JD27 (Jidan 27) and SD19 (Sidan 19) were selected to study the effects of nitrogen levels on root characteristic parameters and plant dry matter accumulation, distribution and transportation. We set five different nitrogen levels, which were nitrogen deficiency (000N), low nitrogen (075N), medium nitrogen (150N), high nitrogen (225N) and excessive nitrogen (300N). The results showed that the root length and root surface area of JD27 were significantly higher than those of SD19 under 075N. With the increase of nitrogen levels, the root difference among varieties gradually decreased. The root length, projection area, total surface area and total volume reached the maximum values at silking stage. The average root diameter kept stable or decreased slowly with the growth stage. The dry matter accumulation of JD27 was higher than that of SD19 at all growth stages. Increasing the amount of nitrogen fertilizer can promote the transport of dry matter to grain and improve dry matter transport efficiency after anthesis. Under the treatment of medium and high nitrogen fertilizer, maize was easy to obtain a higher yield, but excessive nitrogen fertilizer inhibited the increase of yield. This study provides theoretical and practical guidance for maize production techniques.

Suggested Citation

  • Yang Yu & Chunrong Qian & Wanrong Gu & Caifeng Li, 2021. "Responses of Root Characteristic Parameters and Plant Dry Matter Accumulation, Distribution and Transportation to Nitrogen Levels for Spring Maize in Northeast China," Agriculture, MDPI, vol. 11(4), pages 1-24, April.
    • Handle: RePEc:gam:jagris:v:11:y:2021:i:4:p:308-:d:529048
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    References listed on IDEAS

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    1. Sepaskhah, Ali Reza & Fahandezh-Saadi, Saghar & Zand-Parsa, Shahrokh, 2011. "Logistic model application for prediction of maize yield under water and nitrogen management," Agricultural Water Management, Elsevier, vol. 99(1), pages 51-57.
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    Cited by:

    1. Juan Zhai & Guoqiang Zhang & Yuanmeng Zhang & Wenqian Xu & Ruizhi Xie & Bo Ming & Peng Hou & Keru Wang & Jun Xue & Shaokun Li, 2022. "Effect of the Rate of Nitrogen Application on Dry Matter Accumulation and Yield Formation of Densely Planted Maize," Sustainability, MDPI, vol. 14(22), pages 1-14, November.
    2. Hu, Yuxin & Zeeshan, Muhammad & Wang, Guiyang & Pan, Yanqiong & Liu, Yongxin & Zhou, Xunbo, 2023. "Supplementary irrigation and varying nitrogen fertilizer rate mediate grain yield, soil-maize nitrogen accumulation and metabolism," Agricultural Water Management, Elsevier, vol. 276(C).

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