Journal of Zhejiang Agricultural Sciences ›› 2025, Vol. 66 ›› Issue (2): 336-343.DOI: 10.16178/j.issn.0528-9017.20231210

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Effects of irrigation water amount and humic acid dosage on yield, quality and water use of tomato

SONG Zhi1,2(), GUO Xinsong1,2, FAN Zhongqing1,2, QIAO Jiale1,2, YIN Jing1,2, SUN Xiao3, LIU Tongxin1,2, HONG Pizheng1,2, DING Fangjun1,2,*(), YANG Yongcheng1,2   

  1. 1. Shandong Agricultural University Fertilizer Science Tech. Co. Ltd., Taian 271000, Shandong
    2. Key Laboratory of Humic Acid Fertilizer, Ministry of Agriculture and Rural Affairs, Taian 271000, Shandong
    3. Wudi County Rural Economic Development Service Center, Binzhou 256600, Shandong
  • Received:2023-12-25 Online:2025-02-11 Published:2025-03-24

Abstract:

In order to explore the effects of humic acid application under different irrigation water conditions on the yield, quality and water use of tomato in facilities, three humic acid application treatments were set up under three irrigation water conditions respectively. The effects of these treatments on the growth, photosynthetic characteristics, yield, quality, and water use efficiency of tomato in the facility were studied, and the optimal treatment was selected by principal component analysis. The results showed that the plant height of HA2 and HA3 treatments were significantly higher than that of CK under W2 and W3 treatments at seedling stage. The plant height of W3HA3 treatment before flowering was also significantly higher than that of CK treatment. The net photosynthetic rate and stomatal conductance of W3HA3 treatment were significantly higher than those of CK. The soluble sugar content of W1HA3 and W2HA3 were significantly higher than that of CK. The soluble solids content of CK was significantly lower than that of treatments except W2HA1 and W3HA1. The titratable acid content of W1HA1, W1HA2, W1HA3 and W2HA1 treatments were significantly higher than that of CK. Compared with CK, the yield of W3HA3 treatment was significantly higher. Compared with CK, the water consumption of W1, W2 and W3 treatments were significantly reduced, the water use efficiency was significantly improved, and the irrigation water use efficiency was significantly improved. Furthermore, the comprehensive score of W3HA3 treatment was the highest, that was, 15% reduction in irrigation combined with humic acid instead of 30% rotted chicken manure could promote tomato growth and photosynthesis, and improve tomato yield, quality and water use efficiency.

Key words: tomato, irrigation, humic acid, yield, quality, water use efficiency

CLC Number: