植物生态学报 ›› 2021, Vol. 45 ›› Issue (11): 1263-1274.DOI: 10.17521/cjpe.2020.0401

• 研究论文 • 上一篇    下一篇

不同恢复年限老参地土壤养分以及酚酸类代谢物含量差异

李崇玮1, 柏新富1, 陈国忠1, 朱萍1, 张淑婷2, 侯玉平1,*(), 张兴晓1,*()   

  1. 1鲁东大学生命科学学院, 山东烟台 264025
    2云南大学生态与环境学院, 昆明 650504
  • 收稿日期:2020-12-04 接受日期:2021-07-05 出版日期:2021-11-20 发布日期:2021-08-26
  • 通讯作者: 侯玉平,张兴晓
  • 作者简介:Zhang XX, zhangxingxiao@163.com)
    * (Hou YP, hou_yuping@163.com;
  • 基金资助:
    山东省重大科技创新工程项目(2017GGH5129);国家自然科学基金(31770581);山东省高等学校科技计划项目(J17KA128);山东省大学生创新创业训练项目(201810451021)

Differences in soil nutrients and phenolic acid metabolites contents in American ginseng cultivated soils with different restoration years

LI Chong-Wei1, BAI Xin-Fu1, CHEN Guo-Zhong1, ZHU Ping1, ZHANG Shu-Ting2, HOU Yu-Ping1,*(), ZHANG Xing-Xiao1,*()   

  1. 1College of Life Sciences, Ludong University, Yantai, Shandong 264025, China
    2College of Ecology and Environment, Yunnan University, Kunming 650504, China
  • Received:2020-12-04 Accepted:2021-07-05 Online:2021-11-20 Published:2021-08-26
  • Contact: HOU Yu-Ping,ZHANG Xing-Xiao
  • Supported by:
    Major Science and Technology Innovation Project of Shandong Province(2017GGH5129);National Natural Science Foundation of China(31770581);Shandong Province Higher Educational Science and Technology Program(J17KA128);Innovation and Entrepreneurship Training Project for college students in Shandong Province(201810451021)

摘要:

人工种植西洋参(Panax quinquefolius)具有很高的经济效益, 但连作障碍已成为其产业可持续发展的限制因子。目前对连作障碍成因的研究尚且不足。该研究以收获西洋参后恢复1、10、20年的老参地(分别记为A1、A10、A20)为研究对象, 以未种植过西洋参的土地为对照(CK), 测定和分析土壤养分及酚酸类代谢物的变化, 以期从养分和化感作用的角度解析可能造成西洋参连作障碍的关键因子。通过常规化学性质测定方法和气相色谱质谱联用(GC-MS)的方法测定土壤养分含量, 采用高效液相色谱法(HPLC)测定土壤中的酚酸类代谢物含量。结果显示, 3组收获西洋参后的老参地的土壤pH均显著降低; A1 25种有机态养分(氨基酸类、糖类和糖醇类物质)的含量显著降低, N-乙酰鸟氨酸、5-氨基戊酸、丝氨酸、亮氨酸、甘油和槐糖等的含量均在所有老参地中显著下降, 经过20年轮作后依然不能恢复到对照水平。同时, 与预期相反, 被认为具有化感自毒作用的酚酸类代谢物在收获西洋参后含量也显著下降, 其中, 香豆酸、原儿茶酸、阿魏酸和苯甲酸的含量在A1中显著低于CK, 但经过10年时间轮作后可以恢复到接近对照水平。另外, p-香豆酸和丁香酸在A1、A10、A20的含量均显著低于CK, 即经过20年轮作依然不能恢复到对照水平; 酚酸类代谢物对西洋参生长的积极意义应被重视。相关性分析显示上述有机态养分含量、pH和酚酸类代谢物含量之间大多数呈显著正相关关系, 表明各土壤特性之间存在密切的交互作用。综上所述, 种植西洋参引起的土壤酸化、有机态养分和酚酸类代谢物含量降低及各因子间的协同作用可能是西洋参连作障碍的关键因素。

关键词: 西洋参, 连作障碍, 有机态养分, 酚酸类代谢物, 高效液相色谱法(HPLC), 气相色谱质谱联用法(GC-MS)

Abstract:

Aims The cultivation of American ginseng (Panax quinquefolius) is of high economic benefits, but the continuous cropping has begun to limit the sustainable development of its industry. At present, the research on the problems of continuous cropping is limiting. In this study, the changes in soil nutrients and phenolic acid metabolites were measured and analyzed to investigate the key nutrient and allelopathic factors that may cause problems under continuous cropping of American ginseng, using the restoration plots for 1, 10, and 20 years after the long-term use of American ginseng cultivation (A1, A10, A20, respectively) and the control plot (CK) without cultivation of American ginseng.
Methods Soil nutrients contents were determined by conventional chemical methods and the gas chromatography- mass spectrometry (GC-MS). Phenolic acid metabolites contents in soil were determined by the high performance liquid chromatography (HPLC).
Important findings The results showed that soil pH in the three groups of restoration plots was significantly lower than the CK plots. The contents of 25 organic nutrients (amino acids, sugars and alcohols) in A1 were significantly decreased, and the contents of N-acetylornithine, 5-aminovaleric acid, serine, leucine, glycerin and sophora in all restoration plots were significantly decreased compared to those in CK and had not returned to the control level even after 20 years of restoration. Simultaneously, contrary to expectations, the contents of coumaric acid, protocatechuic acid, ferulic acid and benzoic acid in A1 were significantly lower than those in CK, but could return to the control level after 10 years of restoration. In addition, the contents of p-coumaric acid and syringic acid in A1, A10 and A20 were significantly lower than those in CK, and even after 20 years of restoration, it had not returned to the control level. Attention should be paid to the positive effects of phenolic acid metabolites on the growth of American ginseng. The correlation analysis showed that most of the above organic nutrients contents, pH and phenolic acid metabolites contents showed significantly positive correlations among each other, indicating that there was a significant interaction between soil characteristics. In conclusion, soil acidification, decreases of organic nutrients contents and phenolic acids contents and synergistic effect of soil properties caused by cultivation of American ginseng may be the key factors leading to the problems of continuous cropping.

Key words: Panax quinquefolius, continuous cropping obstacle, organic nutrients, phenolic acid metabolites, high performance liquid chromatography (HPLC), gas chromatography-mass spectrometry (GC-MS)