Journal of Biology ›› 2025, Vol. 42 ›› Issue (4): 72-.doi: 10.3969/j.issn.2095-1736.2025.04.072

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Effects of microalgae fertilizer on the growth of two types of herb crops and soil properties

LUO Guanghong1, CUI Yan1, LIU Haiyan1, CHEN Ye2, WANG Lijuan1, SUN Zhongliang3   

  1. 1. Gansu Microalgae Engineering and Technology Research Center, Hexi University, Zhangye 734000, China;
    2. College of Agriculture and Ecological Engineering, Hexi University, Zhangye 734000, China;
    3. School of Life Sciences, Yantai University, Yantai 264005, China
  • Online:2025-08-18 Published:2025-08-14

Abstract: The microalgae fertilizer, as an innovative microbial fertilizer, has demonstrated a significant ability to enhance crop growth and development, increase photosynthetic pigment levels, and improve photosynthetic efficiency, thereby substantially boosting crop yields. In the cultivation of Chinese baby cabbage, the application of microalgae fertilizer resulted in a 2.71% to 15.19% increase in plant height, a 19.31% rise in root length, and a maximum increment of 311.69 g in package leaf weight, with chlorophyll content increasing by 41.87%. Moreover, soil bulk density decreased by 13.98%, while soil porosity improved by 18.18%, indicating substantial enhancements in the soil’s physical and chemical properties. Similarly, when applied toAstragalus membranaceus, the fertilizer led to yield improvements, with root weight increasing by 5.45% to 18.75% and the net photosynthetic rate rising by 8.02% to 17.48%. Soil porosity and available nutrient content were also elevated. This study confirmed that microalgae fertilizer not only had a positive effect on crop yield but also played a role in enhancing soil quality.

Key words: microalgae fertilizer, photosynthetic efficiency, crop yield, soil properties, soil nutrient content

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