Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2022, Vol. 38 ›› Issue (18): 153-158.doi: 10.11924/j.issn.1000-6850.casb2021-0697

Special Issue: 生物技术 园艺

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Dynamics of Nutrient Elements in Leaf and Fruit of Olive and the Correlation Analysis

DAI Qianli1(), ZHU Hengxing1(), HUANG Feiyi1, LU Min1, CHEN Benwen1, CHEN Qin2, GUAN Yunfeng1, YIN Siqin3, ZHU Yuanchun4   

  1. 1Chongqing Academy of Forestry, Chongqing 400036
    2Chongqing Shapingba District Agricultural Technology Service Center, Chongqing 400030
    3Chongqing Banan District Qiaokouba Forestry Station, Chongqing 401320
    4Chongqing Hanye Landscape Engineering Co., Ltd., Chongqing 400036
  • Received:2021-07-16 Revised:2021-10-13 Online:2022-06-25 Published:2022-07-14
  • Contact: ZHU Hengxing E-mail:daiqianli126@126.com;17249643@qq.com

Abstract:

To provide a theoretical basis for balanced fertilization and for high-quality and high-yield cultivation of olive, the research on the dynamics of nutrient elements, fruit expanding law and their correlation was carried out in Hechuan area of Chongqing. 7-year-old Olea europaea ‘Arbequina’ was used as experiment material, fruits and leaves were collected from three similar trees which had no diseases and insect pests from June 17 to October 22. The content of P, K, Ca, Mg, Fe, Mn, Cu and Zn in leaves and fruits were measured with nitric acid - hydrochloric acid - perchloric acid deboiling - ICP method, and the content of N was measured with Kjeldahl determination. The fruit expanding law was investigated by measuring the longitudinal diameter and transverse diameter of fruits using vernier caliper. The results showed that during ‘Arbequina’ growth period, macroelements in fruits and leaves had different trends with fruit expanding. In general, the content of macroelements presented an order of K>Ca>N>P>Mg in leaves and K>N>Ca>P>Mg in fruits. The demand for microelement Fe was significantly higher than that for Mn, Zn and Cu, and the element Fe in leaves was much higher than that in fruits. There were universal correlations among mineral elements’ content inside leaves and fruits, as well as that with fruit expansion. In terms of the dynamic content of mineral elements in leaves and fruits, nutrient elements N, K and Ca maintained relatively high levels during the development period, and should be fully satisfied by fertilizing. Considering the antagonistic and synergistic relationship among the elements, N fertilizer should also be applied with P and K fertilizer and microelement fertilizer (contain Cu and Zn) to achieve high-yield and high-quality cultivation of olive.

Key words: Olea europaea L., leaf and fruit, nutrient elements, fruit expansion, correlation

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