CHINESE JOURNAL OF OIL CROP SCIENCES ›› 2022, Vol. 44 ›› Issue (3): 610-620.doi: 10.19802/j.issn.1007-9084.2021091

Previous Articles     Next Articles

Effects of nitrogen fertilizer and sodium nitratol on photosynthetic characteristics and yield quality in southern soybean

Qing-nan HAO1(), Fang YANG2, Ai-ai WANG2, Ze-fu LONG3, Zhong-lu YANG1, Hai-feng CHEN1, Zhi-hui SHAN1, Jun-bo DENG2(), Xin-an ZHOU1()   

  1. 1.Institute of Oil Crops Research, Chinese Academy of Agriculture Sciences, Wuhan 430062, China
    2.Jingmen Institute of Agriculture Science, Jingmen 448000, China
    3.Honghu Agricultural Technology Center, Honghu 433200, China
  • Received:2021-03-20 Online:2022-06-25 Published:2022-07-04
  • Contact: Jun-bo DENG,Xin-an ZHOU E-mail:haoqingnan@caas.cn;403372610@ qq. com;zhouxinan@caas.cn


In order to clarify the effects of different compounding of sodium nitrophenolate and nitrogen levels on soybean growth, and promote the practical application of new regulators to determine the cultivation and management measures. Five south main soybean varieties were used as experimental materials to study the effects of different concentration gradient of compounding of sodium nitrophenolate and nitrogen levels spraying on soybean photosynthetic physiological characteristics, yield and quality by field experiments. The effects of compounding of sodium nitrophenolate and nitrogen on photosynthetic characteristics yield and quality of soybean were analyzed by measuring leaf chlorophyll content, net photosynthetic rate, transpiration rate, stomatal conductance and intercellular CO2 concentration in the early flowering stage (R1) and granulation stage (R5). The experiment was carried out in a field-split plot design with three replicates, five nitrogen treatments and three experiment areas. The results showed that SPAD value, net photosynthetic rate, effective pod number per plant, grain weight per plant, other yield components, and the yield of South China soybean varieties were increased under the application of nitrogen. In addition, the yield of You 6019, Zhongdou 44, Zhongdou 41 and Zhongdou 63 were increased under the combination of nitrogenous fertilizer and sodium nitrophenolate, but fat and protein levels did not change much. The yield of Wandou 28 was not increased, but the fat and protein content were increased. After nitrogen treatment, there was a positive correlation between yield and quality of You 6019. In conclusion, the combined spraying of nitrogen fertilizer and sodium nitrophenol has the potential to further synergically improve the yield and quality of soybean varieties in southern China. However, due to the different effects on different varieties, the best treatment plan should be developed for different soybean varieties with different genotypes.

Key words: soybean in southern China, sodium nitrophenolate, photosynthetic characteristic, yield and quality

CLC Number: