CHINESE JOURNAL OF OIL CROP SCIENCES ›› 2021, Vol. 43 ›› Issue (6): 1108-1114.doi: 10.19802/j.issn.1007-9084.2020196

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Effect study on sunflower nutrient expert system for fertilization recommendation

Yu DUAN1(), Xia FAN2, Hao AN1, Jun ZHANG1, Jun-mei LIANG1, Ting-ting ZHANG1, Yu-peng JING1, Bo WANG1   

  1. 1.Institute of Resources Environment and Detection Technology, Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, Hohhot 010031, China
    2.Agriculture, Animal Husbandry and Water Resources Bureau, Saihan District, Hohhot 010020, China
  • Received:2020-07-08 Online:2021-12-22 Published:2021-12-23


To improve the Sunflower Nutrient Expert System, and to facilitate large-scale application, 84 field experiments were carried out from 2017 to 2019 which covered the main sunflower producing areas in China. The efficiency of saving fertilizer, increasing yield, nutrient recovery and economic benefits of sunflower nutrient expert system were analyzed and compared with farmer accustomed fertilization. Results showed that the recommended nutrient rate of sunflower nutrient expert (NE) were 7 kg/hm2 less nitrogen (N), and 23 kg/hm2 less phosphorus (P2O5) than farmer’s practice fertilization (FP). Thus the fertilization was more optimized and reasonable. NE produced an average yield increase of 293.1 kg/hm2 compared with FP fertilization, with yield increase rate of 8.4%. The yield response of NE nitrogen, phosphorus and potassium increased significantly compared with FP. Compared with FP, the economic benefit RMB of NE increased by 1754.4 yuan/hm2.The agronomic efficiency of N and P recommended for NE fertilization increased by 1.7 and 3.6 kg/kg compared with FP. Compared with FP, NE improved NPK RE by 8.7, 6.1 and 6.0 percentage points, respectively. It can be seen that sunflower nutrient expert system has the good effect of saving nitrogen and phosphorus fertilizer, increasing yield, economic efficiency improvement and improving nutrient recovery. Sunflower nutrient expert system can be used to recommend fertilization in sunflower production areas.

Key words: sunflower, nutrient expert recommendation fertilizer, yield, nutrient utilization efficiency, economic benefits

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