Acta Agriculturae Boreali-Sinica ›› 2022, Vol. 37 ›› Issue (1): 95-102. doi: 10.7668/hbnxb.20192484

Special Issue: Oil crops Cultivation & Physiology

• Tillage & Cultivation·Physiology & Biochemistry • Previous Articles     Next Articles

Effects of Nitrogen Nutrition and Rhizobium Inoculation on Nodulation and Nitrogen Fixation and Growth of Soybean

WANG Xiaoli1, WANG Min1, YUE Aiqin1, GUO Shujin1, WANG Peng1, WANG Lixiang1, YANG Tingting1, ZHANG Haisheng1, ZHANG Yongpo2, GAO Chunyan2, ZHANG Wuxia2, NIU Jingping3, DU Weijun1, ZHAO Jinzhong2   

  1. 1. College of Agriculture,Shanxi Agricultural University,Taigu 030801,China
    2. Department of Foundation, Shanxi Agricultural University,Taigu 030801,China
    3. College of Life Sciences, Shanxi Agricultural University,Taigu 030801,China
  • Received:2021-09-24 Published:2022-02-28

Abstract:

To study the effect of soybean rhizobia inoculation under different nitrogen levels on soybean growth and nodulation and nitrogen fixation,soybean Williams 82 was used as the test material to be planted by vermiculite method,and nitrate treatments with three concentrations of no nitrogen,low nitrogen and high nitrogen were set up.Inoculate USDA110 soybean rhizobia to study the effect of different nitrogen levels on soybean nodulation and nitrogen content.The results showed that different levels of nitrogen application had different effects on the number of nodules,nodule dry weight and root dry weight.The application of high-nitrogen nutrient solution could inhibit soybean nodulation,while no nitrogen treatment promoted soybean nodulation.At the same time,the root dry weight showed the opposite trend,the root dry mass of the no nitrogen treatment was the smallest,and the root dry mass of the high-nitrogen treatment was the largest.Under different nitrogen levels,the nitrogen content of different organs of soybean showed different changing trends between inoculation and non-inoculation.Under different nitrogen levels,the nitrogen content under high nitrogen treatment was higher than low nitrogen and no nitrogen treatment,and the nitrogen content of different organs showed the phenomenon of leaf>root>stem overall.Under different nitrogen levels,the chlorophyll values(SPAD)of different leaf positions showed that there was no significant difference between inoculation and non-inoculation.The measurement results of leaf morphological indicators showed that the leaf area,leaf circumference,leaf length and leaf width of high nitrogen treatment were significantly higher than low nitrogen and no nitrogen treatments.Leaf area and leaf circumference after nitrogen-free inoculation were significantly greater than those without nitrogen-free inoculation,indicating that inoculation not only promoted root growth,but also stimulated leaf enlargement.It can be seen that rhizobium inoculation had different changes for nodulation,nitrogen fixation and growth and development of soybean seedlings under different nitrogen levels.Appropriate increase in nitrogen nutrition combined with the use of rhizobia was an effective way to promote the growth and development of soybean and the utilization and absorption of nitrogen.

Key words: Soybean, Nitrogen level, Nodulation and nitrogen fixation, Nitrogen Accumulation, Growth

Cite this article

WANG Xiaoli, WANG Min, YUE Aiqin, GUO Shujin, WANG Peng, WANG Lixiang, YANG Tingting, ZHANG Haisheng, ZHANG Yongpo, GAO Chunyan, ZHANG Wuxia, NIU Jingping, DU Weijun, ZHAO Jinzhong. Effects of Nitrogen Nutrition and Rhizobium Inoculation on Nodulation and Nitrogen Fixation and Growth of Soybean[J]. Acta Agriculturae Boreali-Sinica, 2022, 37(1): 95-102. doi: 10.7668/hbnxb.20192484.

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