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Chinese Agricultural Science Bulletin ›› 2024, Vol. 40 ›› Issue (4): 74-82.doi: 10.11924/j.issn.1000-6850.casb2023-0112

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Effect of Magnesium Fertilizer Dosage on Yield, Quality and Nutrient Uptake of Four Leafy Vegetables

LIN Haiqing(), LI Jing, LI Jiawei, WANG Jiahui, JIAO Jiabin, CHANG Jingjing, CHEN Xiao, ZHANG Baige, SONG Zhao()   

  1. Guangdong Key Laboratory of Vegetable New Technology Research/Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640
  • Received:2023-02-20 Revised:2023-08-10 Online:2024-02-05 Published:2024-01-29

Abstract:

This experiment aimed to investigate the effects of different Mg fertilizer dosages on yield, quality and nutrient uptake and utilization of different leafy vegetables, and to provide a scientific fertilization scheme for leafy vegetable quality production. Four different leafy vegetable varieties (Shuidong mustard, Lvtian mustard, Zengcheng Chinese flowering cabbage and ‘Yuetai No.1’ Chinese flowering cabbage) were used as test materials, and five different Mg fertilizer treatments were set up, including 0 kg/hm2 (CK), 30 kg/hm2 (Mg1), 60 kg/hm2 (Mg2), 90 kg/hm2 (Mg3) and 120 kg/hm2 (Mg4). The effects of Mg application on yield, quality, value of output gains, and nutrient uptake and utilization of four leafy vegetable varieties were analyzed. Based on the yield and quality characteristics of vegetables, the Mg1 treatment of Shuidong mustard, the Mg4 treatment of Lvtian mustard, the Mg4 treatment of Zengcheng Chinese flowering cabbage and the Mg3 treatment of ‘Yuetai No.1’ Chinese flowering cabbage achived the best yield and quality improvement effects in this trial. Compared with CK, the yield of Shuidong mustard increased by 36.8%, revenue by 47.1%, soluble sugar content by 54.9%, vitamin C content by 18.5%, magnesium content by 0.1%, and P uptake by 182.7% in the Mg1 treatment; the yield of Lvtian mustard increased by 43.4%, revenue by 44.5%, soluble sugar content by 105.6%, N uptake by 29.6% and K uptake by 117.8%. Zengcheng Chinese flowering cabbage increased yield by 79.3%, revenue by 95.3%, Mg content by 0.2%, N uptake by 90.0% and K uptake by 167.2% under the Mg4 treatment; ‘Yuetai No.1’ Chinese flowering cabbage increased yield by 56.1%, revenue by 64.1%, vitamin C content by 16.7%, Cellulose content by 39.0% and N, P, K uptake by 75.7%, 58.9% and 66.2%, respectively. In summary, magnesium application can increase the yield of leafy vegetables, improve vegetable quality, enhance nutrient absorption and utilization efficiency, and increase income. Therefore, in the actual production of leafy vegetables, magnesium fertilizer should be applied appropriately to achieve a high yield and quality and green production of vegetables.

Key words: mustard, Chinese flowering cabbage, magnesium fertilizer dosage, yield, quality, nutrient uptake