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Chinese Agricultural Science Bulletin ›› 2025, Vol. 41 ›› Issue (6): 109-117.doi: 10.11924/j.issn.1000-6850.casb2024-0483

Special Issue: 生物技术

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Soil Nutrient Investigation and Fertility Assessment of Pomegranate Orchards with Different Ages in Lintong District

FENG Zhizhen1(), YAN Hong1, CHEN Ni2, SHEN Donghu2, SU Haiyan2, ZHANG Yingjun2()   

  1. 1 Bio-agriculture Institute of Shaanxi, Xi’an 710043
    2 Horticultural Workstation of Lintong District, Xi’an 710600
  • Received:2024-07-15 Revised:2024-12-16 Online:2025-02-25 Published:2025-02-24

Abstract:

To investigate the soil nutrient and fertility status of pomegranate orchards with different ages in Lintong District, a total of 28 soil samples were collected from 6 pomegranate orchards in Lintong District in two soil layers of 0-20 cm and 20-40 cm, the contents of soil macroelement, medium and microelement were determined, and the soil fertility status of pomegranate orchards were evaluated. The results showed that with the increase of planting years, the pH and nutrient indexes of 0-20 cm and 20-40 cm soil layers in pomegranate orchard did not show obvious change patterns; the soil in pomegranate orchard had mean pH>7.5, which was alkaline; most of the nutrient indexes in the lower soil layer of 20-40 cm were lower than those in the surface soil layer of 0-20 cm; the soil organic matter, soil nitrogen and soil alkaline nitrogen were mostly at medium level. Soil effective phosphorus, soil quick-acting potassium, soil effective calcium and soil effective zinc were at high level, and soil effective magnesium, soil effective iron, soil effective manganese and soil effective boron were at medium-low level. It was suggested that pomegranate orchards should increase the application of organic fertilizers, appropriately increase the application of nitrogen fertilizers, and appropriately supplement the trace elements.

Key words: Lintong pomegranate, macroelement, medium and microelement, nutrient, fertility, organic fertilizer