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Chinese Journal of Applied Ecology ›› 2020, Vol. 31 ›› Issue (7): 2390-2398.doi: 10.13287/j.1001-9332.202007.022

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Effects of high efficiency and stability ammonium sulfate fertilizer applied in black soil

CUI Lei1,2,5, LI Dong-po1,5*, WU Zhi-jie1, LI Xue-hong1,2, LI Yong-hua3, YAN Zeng-hui4, ZHENG Ye4, ZHANG Jin-ming4   

  1. 1Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
    2University of Chinese Academy of Sciences, Beijing 100049, China;
    3North Huajin Chemical Industries Group Corporation, Panjin 124021, Liaoning, China;
    4Jinxi Natural Gas Chemical Co. Ltd., Huludao 125001, Liaoning, China;
    5National Field Observation and Research Station of Shenyang Agro-ecosystems, Chinese Academy of Sciences, Shenyang 110107, China
  • Received:2019-11-08 Accepted:2020-04-24 Online:2020-07-15 Published:2021-01-15
  • Contact: E-mail: lidp@iae.ac.cn
  • Supported by:
    This work was supported by the National Key Research and Development Program of China (2017YFD0200707).

Abstract: To develop high efficiency stabilized N fertilizer, a pot experiment was conducted to examine the effects of stabilized ammonium sulfate with different nitrification inhibitors on soil avai-lable nitrogen (N) contents, nitrification inhibition rate, apparent nitrification rate, yield, some agronomic parameters and N fertilizer utilization rate of corn in black soil of Jilin Provinve. In this study, blank (CK) and (NH4)2SO4 (N) were set as controls, and nitrification inhibitor 3,4-dimethyl-pyrazolate phosphate (DMPP), 2-chloro-6-trimethyl-pyridine (CP), ammonia protectant N-GD and nitrogen fertilizer synergist HFJ and their combination applied to ammonium sulfate to form nine treatments. The results showed that compared with the treatment of N, application of DMPP and its combinations in black soil significantly affected soil available N contents and the apparent nitrification rate. The contents of ammonium increased by 1.4-2.0 times, while the contents of nitrate and the apparent nitrification rate of soil decreased by 13.6%-17.9% and 55.3%-59.8%, respectively. DMPP, DMPP+HFJ, DMPP+N-GD had the highest nitrification inhibition rate, which reached higher than 16.5%. DMPP+HFJ+N-GD and HFJ increased the chlorophyll content in maize leaves by 4.5-5.3 times. The addition of nitrification inhibitors and fertilizer synergist to ammonium sulfate did not affect plant height. Compared with the treatment of N, HFJ increased corn biomass, grain yield, economic coefficient, harvest index, agronomic utilization rate of fertilizer, N uptake utilization rate, fertilizer contribution rate and N partial productivity of corn by 1.2, 2.5, 0.7, 0.6, 2.7, 2.1, 1.3 and 2.5 times, respectively. In general, HFJ, DMPP, DMPP+HFJ, DMPP+N-GD performed best in black soil. By considering both the cost and N utilization rate, N fertilizer synergist HFJ is the first choice for stable ammonium sulfate N fertilizer biochemical inhibitor, followed by DMPP+HFJ or DMPP+N-GD.

Key words: nitrification inhibitor, nitrogen fertilizer synergist, grain yield, apparent nitrification rate, nitrogen use efficiency