Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2020, Vol. 41 ›› Issue (11): 2219-2225.DOI: 10.3969/j.issn.1000-2561.2020.11.010

• Plant Cultivation, Physiology & Biochemistry • Previous Articles     Next Articles

Intercropping with Pandanus amaryllifolius Roxb. Improved Root Growth of Areca catechu L. and Soil Enzyme Activities

YU Huan1,TANG Jinxuan1,2,LI Qiansong1,3,QIN Xiaowei1,*(),ZONG Ying1,HAO Chaoyun1,BAI Tingyu1   

  1. 1. Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences / Hainan Provincial Key Laboratory of Genetic Improvement and Quality Regulation for Tropical Spice and Beverage Crops / Key Laboratory of Genetic Resource Utilization of Spice and Beverage Crops, Ministry of Agriculture and Rural Affairs, Wanning, Hainan 571533, China
    2. School of Horticulture, Hainan University, Haikou, Hainan 570228, China
    3. School of Tropical Crop, Yunnan Agricultural University, Pu’er, Yunnan 665000, China
  • Received:2020-02-28 Revised:2020-03-25 Online:2020-11-25 Published:2020-12-23
  • Contact: QIN Xiaowei


The root growth of Areca catechu L. (arecanut) and Pandanus amaryllifolius Roxb. (pandan) with the soil enzyme activities was studied in the monoculture and intercropping systems with pot experiments. The results showed that the accumulation of arecanut dry matter was promoted in the intercropping system, the dry matter distributed to the root increased, and the dry matter in underground significantly increased over the arecanut monoculture. The dry matter accumulation of pandan was no significantly different between intercropping and pandan monoculture. SPAD reading of arecanut leaves significantly increased after intercropping, however, there was no significant difference for pandan. The total root length, total root surface area and root number of arecanut significantly increased in the intercropping system, which increased by 78.64%, 50.96% and 81.22%, respectively, compared with the arecanut monoculture. The effect of intercropping on the arecanut root growth was greater than that of pandan. The activity of acid phosphatase, catalase and peroxidase in the intercropping soil was significantly higher than that in the arecanut monoculture. The activity of urease was not significantly different between intercropping and arecanut monoculture, however, that in the intercropping system was significantly lower than that in pandan monoculture. The activity of soil peroxidase was positively correlated with root number and root volume. There is less competition between the roots of arecanut and the pandan. Compared with arecanut monoculture, the arecanut and pandan intercropping system can promote arecanut root growth, increase soil enzyme activity.

Key words: Areca catechu L., Pandanus amaryllifolius Roxb., intercropping, root growth, soil enzyme activities

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