Journal of Zhejiang Agricultural Sciences ›› 2025, Vol. 66 ›› Issue (12): 2985-2993.DOI: 10.16178/j.issn.0528-9017.20240707

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Effects of different concentrations and application methods of Ruikangdun microbial agent on the growth and yield of continuous cropping small-fruit watermelon

FENG Ruchao1(), ZHANG Lina1, ZHANG Jie2, LIU Zhe1, ZHENG Jiaqiu1, YANG Jialin3, SHEN Feng1, ZU Yanxia1, WANG Weiwei1, WU Yongcheng1, MEI Yi1,*()   

  1. 1. Jiangsu Coastal Agricultural Science Research Institute, Yancheng 224002, Jiangsu
    2. Vegetable Research Center of Beijing Academy of Agriculture and Forestry, Key Laboratory of Horticultural Crop Biology and Germplasm Creation in North China, Ministry of Agriculture and Rural Affairs,Beijing Vegetable Germplasm Improvement Laboratory, Beijing 100097
    3. Yancheng Qianjiao Agricultural Development Co., Ltd., Yancheng 224500, Jiangsu
  • Received:2024-09-03 Online:2025-12-11 Published:2025-12-17

Abstract:

In order to verify the application effect of Ruikangdun microbial agent on continuous cropping small-fruit watermelon, this experiment used the Jingmei 2K small-fruit watermelon variety as the test material, analyzed the effects of different concentrations of Ruikangdun microbial agent on plant growth, yield, quality, and soil physicochemical properties indicators, and explored the optimal application method and concentration, to provide guidance for the promotion and application of Ruikangdun microbial agent. The results showed that the 667 m2 yield of CS-500 treatment increased by 24.61% compared with CS-CK, while the 667 m2 yield of ZG-200 treatment increased by 17.60% compared with ZG-CK. The 667 m2 yield of CS-500 treatment increased by 6.58% compared with ZG-200. The edge sugar and center sugar contents of the flushing treatment and root dipping treatment were above 10.00% and 11.00%, respectively. The edge sugar content of ZG-200 treatment significantly (p<0.05) increased by 1.48 percentage points compared with ZG-CK, and the center sugar content significantly increased by 0.96 percentage points compared with ZG-CK. In summary, Ruikangdun microbial agent can promote the absorption of soil nutrients by watermelon plants, promote plant growth, and improve fruit yield and quality. When planting continuous cropping small-fruit watermelon, the first step is to dip the roots with a 200-fold dilution of Ruikangdun microbial agent, and then flush with a 500-fold dilution of Ruikangdun microbial agent at least three times for a better effect.

Key words: Ruikangdun microbial agent, continuous cropping, small-fruit watermelon, yield, quality

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