Welcome to Acta Prataculturae Sinica ! Today is Share:

Acta Prataculturae Sinica ›› 2025, Vol. 34 ›› Issue (1): 118-134.DOI: 10.11686/cyxb2024082

Previous Articles    

Phaseolus vulgaris root system formation in chestnut soil

Jin-hui SONG1(), Yun-jie HAN2(), Ji-zong ZHANG2, Zhi-hui WANG1, Li-feng ZHANG2(), Hui-bin LI2   

  1. 1.College of Agriculture and Forestry,Hebei North University,Zhangjiakou 075000,China
    2.College of Agronomy,Hebei Agricultural University,Baoding 071200,China
  • Received:2024-03-17 Revised:2024-04-16 Online:2025-01-20 Published:2024-11-04
  • Contact: Li-feng ZHANG
  • About author:First author contact:These authors contributed equally to this work.

Abstract:

Precision water and fertilizer management in farmland when water is scarce needs to take account of the development patterns of the crop root system within the soil and over time. Here, Phaseolus vulgaris root biomass, length, surface area, volume and diameter was monitored in two differing light loamy or sandy chestnut soil fields at different growth stages using stratified excavation to extract root samples and image analysis techniques to quantify root parameters. The results showed that the root biomass of P. vulgaris in the two fields was similar, and roughly divided into three stages: slow growth, linear growth and slow decline. The linear growth period was from the initial flowering stage to the full pod stage. At this stage, the daily growth rates of fresh and dry weight of P. vulgaris root systems were 2.46 and 0.24 g·2 plants-1 in light loamy chestnut soil fields, while they were 1.79 and 0.20 g·2 plants-1 in sandy chestnut soil fields. The root system parameters, such as root length, surface area and volume, were all positively correlated with root fresh and dry weight. From a vertical distribution perspective, the root distribution of P. vulgaris in sandy chestnut soil was shallower than in loamy chestnut soil. In the sandy soil, more than 82.68% of the roots were distributed in the 0-30 cm soil horizon. In the light loamy soil, more than 86.24% of the roots were distributed in the 0-60 cm soil horizon, after the initial pod stage. From a lateral distribution perspective, over 77% of the P. vulgaris root systems in light loamy chestnut soil were distributed within a 30 cm radius on both sides of the plant during the entire growth period, while the proportion of root systems in sandy chestnut soil showed a decreasing trend with growth development, and decreased to over 66% at the end of podding. The contour map of the root systems showed that, P. vulgaris roots in light loamy chestnut soil exhibited narrow and deep placement, while in sandy chestnut soil placement was wide and shallow. This research lays a foundation for development of innovative and efficient water and fertilizer utilization technology for P. vulgaris in the Bashang area.

Key words: stratified excavation, drip irrigation, Phaseolus vulgaris, root system, spatiotemporal distribution