ACTA AGRICULTURAE BOREALI-SINICA ›› 2021, Vol. 36 ›› Issue (1): 152-158. doi: 10.7668/hbnxb.20191575

Special Issue: Wheat Soil fertilizer Hot Article

• Resources & Environment·Plant Protection • Previous Articles     Next Articles

The Impacts of Nitrogen Combined with Phosphorus and Application Methods on Olsen-P and Phosphorus Uptake of Wheat in Fluvo-aquic Soil

SU Tongqing1,3, XING Lu2,3, WANG Huoyan3,4, ZHOU Jianmin3   

  1. 1. Key Laboratory of Beibu Gulf Environment Change and Resources Utilization of Ministry of Education, Guangxi Key Laboratory of Earth Surface Processes and Intelligent Simulation, Nanning Normal University, Nanning 530001, China;
    2. Kingenta Ecological Engineering Group Co., Ltd., Linshu 276700, China;
    3. State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;
    4. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2020-07-17 Published:2021-02-28

Abstract: To understand the effects of combined application and fertilization methods on utilization rate of phosphate fertilizer and crop yield, wheat was planted in calcareous fluvo-aquic soil through the potting experiment and the content of soil Olsen-P and phosphorus uptake of wheat were investigated. The mixed application was calcium dihydrogen phosphate(P1) and diammonium hydrogen phosphate(P2) combined with urea(N1) and ammonium sulfate(N2). The three different fertilizer methods included:(A) in the whole soil pot;(B) strip application with a vertical distance of 5 cm from the soil surface and a horizontal distance of 0 cm from the root system of wheat;and(C) strip application with a vertical distance of 5 cm from the soil surface and a horizontal distance of 12 cm from the root system of wheat. The results showed that the decrease of pH at the fertilization point of P1 treatment was more intense than that of P2 and the content of Olsen-P was higher, and the application of N2(P1N2:219.62 mg/kg) enhanced the increase of Olsen-P content in soil compared with the application of N1(P1N1:154.05 mg/kg). For wheat growth and development, the application of P2 was better than P1, and the application of fertilizer at a certain soil depth was better than the mixed application in the whole soil pot, but the application at 5 cm depth under root and 12 cm far from root had no significant differences. This study demonstrated that, for the fluvo-aquic soil-wheat growing season, P2 was more advantageous than P1, and it was more appropriate to apply concentrated application at a depth of 5 cm below the surface soil layer than to spread and mixed the surface soil, which provided fertilization reference for increasing phosphate utilization efficiency and wheat yield in fluvo-aquic soil.

Key words: Wheat, Phosphate fertilizer, Nitrogen fertilizer, Application methods, Fluvo-aquic soil

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Cite this article

SU Tongqing, XING Lu, WANG Huoyan, ZHOU Jianmin. The Impacts of Nitrogen Combined with Phosphorus and Application Methods on Olsen-P and Phosphorus Uptake of Wheat in Fluvo-aquic Soil[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2021, 36(1): 152-158. doi: 10.7668/hbnxb.20191575.

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