HUBEI AGRICULTURAL SCIENCES ›› 2022, Vol. 61 ›› Issue (5): 27-31.doi: 10.14088/j.cnki.issn0439-8114.2022.05.006

• Soil & Fertilizer • Previous Articles     Next Articles

Effects of spraying zinc chelate fertilizer on the grain yield, zinc content and quality of rice

MEI Qing-qing, TIAN Cang, ZHOU Qing-yun, WU Mei-yan, ZHANG Wen-ying, TIAN Xiao-hai   

  1. Hubei Key Laboratory of Waterlogging and Wetland Agricultural Utilization/College of Agriculture,Yangtze University,Jingzhou 434025,Hubei,China
  • Received:2021-03-08 Online:2022-03-10 Published:2022-04-01

Abstract: The field experiment was conducted to investigate the effects of foliar application of zinc chelate fertilizers(zinc-amino acid chelate, zinc-EDTA chelate, zinc-fulvic acid chelate) and zinc sulfate on the grain yield, zinc content and quality of rice in two years (2017 and 2018). The results showed that zinc chelate fertilizer could improve the grain yield, zinc content and quality compared with zinc sulfate. Especially, SPAD, photosynthesis and the grain yield were significantly increased in the foliar application of 0.3% zinc-fulvic acid chelate or 0.3% zinc-amino acid chelate. Compared with no zinc fertilizer (CK), the grain yield was increased by 4.9% and 4.7%, and compared with zinc sulfate (0.3%), the grain yield was increased by 2.1% and 2.0%, mainly due to the increase of 1 000 grain weight and seed setting rate. At the same time, zinc content and quality of rice were promoted by spraying zinc chelate fertilizer. Compared with zinc sulfate (0.3%), the zinc content of milled rice, the head rice rate and the protein content were increased by 33.7% and 29.3%, 7.8% and 6.7%, 29.1% and 28.3% in the foliar application of 0.3% zinc-fulvic acid chelate or 0.3% zinc-amino acid chelate, respectively. It suggests that the application rate of 0.3% zinc-amino acid chelate or 0.3% zinc-fulvic acid chelate could be recommended in the potential zinc deficient paddy fields.

Key words: potential zinc deficiency paddy field, zinc chelate fertilizer, grain yield, zinc content, protein

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