Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2015, Vol. 31 ›› Issue (28): 71-78.doi: 10.11924/j.issn.1000-6850.casb15040138

Special Issue: 园艺

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Mechanism Exploration of the Coordinated Regulation Effects of

Compost and Bacillus subtilis on Cucumber Seedling Growth   

  1. Bi Yangang, Tian Yongqiang(College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193)
  • Received:2015-04-17 Revised:2015-04-29 Accepted:2015-04-29 Online:2015-10-27 Published:2015-10-27

Abstract: Soil bio-obstacle is one of the main bottlenecks that restrict the sustainable development of greenhouse vegetable production in China, and soil-born pathogen is a major factor that induces soil bio-obstacle. Since soil bio-obstacle is common in cucumber production, the author investigated the effects of compost and Bacillus subtilis on the pathogen caused Fusarium wilt and plant growth. The results showed that both microorganisms in compost and Bacillus subtilis could significantly reduce the inhibition of pathogen to cucumber growth, and had synergistic effect. Microorganisms in compost mainly influenced the absolute length of the first lateral roots (0.3-0.9 mm diameter) and the relative amount of the second lateral roots (0-0.3 mm diameter), while Bacillus subtilis mainly influenced the absolute length of the first lateral roots. Based on these results, microorganisms in compost could cooperate with B. subtilis to inhibit cucumber pathogen and enhance cucumber root growth.