Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2019, Vol. 40 ›› Issue (6): 1041-1045.DOI: 10.3969/j.issn.1000-2561.2019.06.001

• Crop Culture and Nutrition, Genetic Breeding •     Next Articles

Short-term Effect of Different Rate of Biochar Application on Root Development of Hevea brasiliensis

BEI Meirong,HUANG Yanyan,JING Yudan,CHA Zhengzao,LIN Qinghuo(),LUO Wei   

  1. Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences / Soil and Fertilizer Research Center, Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan 571737, China
  • Received:2018-08-15 Revised:2019-02-14 Online:2019-06-25 Published:2019-07-02
  • Contact: LIN Qinghuo


The short-term effect of four rates of biochar on the root growth of rubber trees (Hevea brasiliensis) were investigated. The contents of soil organic matter, total N, available phosphorus and potassium, and the soil pH were all promoted by the application of biochar. However, soil bulk density decreased using the biochar. In addition, the weight, length, surface area and volume of root were affected in different trends by different amount application of biochar, i.e. compared to CK, the short-term effect of biochar application only at the content of 5% had significantly increased root weight, length, surface area and volume of H. brasiliensis, and there were no significant effects on these items by application of other contents with 1%, 10% or 15%. Meanwhile, the weight of fine root was accounted for 64.8%-76.1% of the total weight of root. Based on the above results, it indicated that the application amount of biochar to have better short-term effect on the growth promotion of the roots of H. brasiliensis was 5%.

Key words: biochar, rubber tree, root system, soil nutrient

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